loader.test.js

import path from "path";

import nodeSass from "node-sass";
import dartSass from "sass";
import Fiber from "fibers";
import del from "del";

import {
  compile,
  getCodeFromBundle,
  getCodeFromSass,
  getCompiler,
  getErrors,
  getImplementationByName,
  getTestId,
  getWarnings,
} from "./helpers";

const implementations = [nodeSass, dartSass];
const syntaxStyles = ["scss", "sass"];

jest.setTimeout(60000);

describe("loader", () => {
  beforeEach(() => {
    // The `sass` (`Dart Sass`) package modify the `Function` prototype, but the `jest` lose a prototype
    Object.setPrototypeOf(Fiber, Function.prototype);
  });

  implementations.forEach((implementation) => {
    const [implementationName] = implementation.info.split("\t");

    syntaxStyles.forEach((syntax) => {
      it(`should work (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("language", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work (${implementationName}) (${syntax}) with the "memory" cache`, async () => {
        const cache = path.resolve(
          __dirname,
          `./outputs/.cache/sass-loader/${implementationName}/${syntax}`
        );

        await del(cache);

        const testId = getTestId("language", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options },
          cache: {
            type: "memory",
          },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work (${implementationName}) (${syntax}) with the "filesystem" cache`, async () => {
        const cache = path.resolve(
          __dirname,
          `./outputs/.cache/sass-loader/${implementationName}/${syntax}`
        );

        await del(cache);

        const testId = getTestId("language", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options },
          cache: {
            type: "filesystem",
            cacheDirectory: cache,
          },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with an empty file (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("empty", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should output an understandable error (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("error", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);

        expect(
          stats.compilation.fileDependencies.has(
            path.resolve(`./test/${syntax}/error.${syntax}`)
          )
        ).toBe(true);
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should output an understandable error when the problem in "@import" (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("error-import", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);

        expect(
          stats.compilation.fileDependencies.has(
            path.resolve(`./test/${syntax}/error-import.${syntax}`)
          )
        ).toBe(true);
        expect(
          stats.compilation.fileDependencies.has(
            path.resolve(`./test/${syntax}/error.${syntax}`)
          )
        ).toBe(true);
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should output an understandable error when a file could not be found (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("error-file-not-found", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);

        expect(
          stats.compilation.fileDependencies.has(
            path.resolve(`./test/${syntax}/error-file-not-found.${syntax}`)
          )
        ).toBe(true);
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should throw an error with a explicit file and a file does not exist (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("error-file-not-found-2", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);

        expect(
          stats.compilation.fileDependencies.has(
            path.resolve(`./test/${syntax}/error-file-not-found-2.${syntax}`)
          )
        ).toBe(true);
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with difference "@import" at-rules (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("imports", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      // Test for issue: https://github.com/webpack-contrib/sass-loader/issues/32
      it(`should work with multiple "@import" at-rules (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("multiple-imports", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      // Test for issue: https://github.com/webpack-contrib/sass-loader/issues/73
      it(`should work with "@import" at-rules from other language style (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-other-style", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work when "@import" at-rules from scoped npm packages (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-from-npm-org-pkg", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work when "@import" at-rules with extensions (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-with-extension", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work when "@import" at-rules starting with "_" (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-with-underscore", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work when "@import" at-rules without extensions and do not start with "_" (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId(
          "import-without-extension-and-underscore",
          syntax
        );
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with multiple "@import" at-rules without quotes (${implementationName}) (${syntax})`, async () => {
        if (syntax === "scss") {
          return;
        }

        const testId = getTestId("import-without-quotes", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "sass" field (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-sass-field", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "style" field (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-style-field", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "main" field (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-main-field", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "main" field when the "main" value is not in the "mainFields" resolve option (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-main-field", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options, resolve: { mainFields: [] } },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "main" field when the "main" value already in the "mainFields" resolve option (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-main-field", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options, resolve: { mainFields: ["main", "..."] } },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "custom-sass" field (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-custom-sass-field", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options, resolve: { mainFields: ["custom-sass", "..."] } },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "index" file in package (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-index", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "index" file in package when the "index" value is not in the "mainFiles" resolve option (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-index", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options, resolve: { mainFiles: [] } },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "index" file in package when the "index" value already in the "mainFiles" resolve option (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-index", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options, resolve: { mainFiles: ["index", "..."] } },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should prefer "mainFiles" over "mainFields" when the field contains "js" file (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId(
          "import-prefer-main-files-over-main-fields",
          syntax
        );
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should prefer "mainFiles" with extension over without (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId(
          "import-prefer-main-files-with-extension",
          syntax
        );
        const options = {
          implementation: getImplementationByName(implementationName),
          sassOptions: {
            includePaths: ["node_modules/foundation-sites/scss"],
          },
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and use the "_index" file in package (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-_index", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with an alias (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-alias", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          resolve: {
            alias: {
              "path-to-alias": path.resolve(
                __dirname,
                syntax,
                "another",
                `alias.${syntax}`
              ),
              "@sass": path.resolve(
                __dirname,
                "sass",
                "directory-6",
                "file",
                "_index.sass"
              ),
              "@scss": path.resolve(
                __dirname,
                "scss",
                "directory-6",
                "file",
                `_index.scss`
              ),
              "@path-to-scss-dir": path.resolve(__dirname, "scss"),
              "@path-to-sass-dir": path.resolve(__dirname, "sass"),
              "@/path-to-scss-dir": path.resolve(__dirname, "scss"),
              "@/path-to-sass-dir": path.resolve(__dirname, "sass"),
            },
          },
          loader: { options },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      // Legacy support for CSS imports with node-sass
      // See discussion https://github.com/webpack-contrib/sass-loader/pull/573/files?#r199109203
      it(`should work and ignore all css "@import" at-rules (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-css", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with the "bootstrap-sass" package, directly import (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("bootstrap-sass", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with the "bootstrap-sass" package, import as a package (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("bootstrap-sass-package", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with the "bootstrap" package, import as a package (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("bootstrap", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with the "foundation-sites" package, import as a package (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("foundation-sites", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
          sassOptions: {
            includePaths: ["node_modules/foundation-sites/scss"],
          },
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with the "foundation-sites" package, adjusting CSS output (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId(
          "foundation-sites-adjusting-css-output",
          syntax
        );
        const options = {
          implementation: getImplementationByName(implementationName),
          sassOptions: {
            includePaths: ["node_modules/foundation-sites/scss"],
          },
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work and output the "compressed" outputStyle when "mode" is production (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("language", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          mode: "production",
          loader: { options },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(
          testId,
          Object.assign({}, options, {
            sassOptions: {
              outputStyle: "compressed",
            },
          })
        );

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should watch firstly in the "includePaths" values (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("prefer-include-paths", syntax);
        const options = {
          sassOptions: {
            includePaths: [
              path.resolve(
                `./test/node_modules/package-with-style-field-and-css/${syntax}`
              ),
            ],
          },
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should load only sass/scss files for the "mainFiles" (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId(
          "import-package-with-js-and-css-main-files",
          syntax
        );
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should load files with underscore in the name (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-underscore-file", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should respect resolving from the "SASS_PATH" environment variable (${implementationName}) (${syntax})`, async () => {
        process.env.SASS_PATH =
          process.platform === "win32"
            ? `${path.resolve("test", syntax, "sass_path")};${path.resolve(
                "test",
                syntax,
                "sass_path_other"
              )}`
            : `${path.resolve("test", syntax, "sass_path")}:${path.resolve(
                "test",
                syntax,
                "sass_path_other"
              )}`;

        const testId = getTestId("sass_path-env", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");

        delete process.env.SASS_PATH;
      });

      it(`should respect resolving from "process.cwd()" (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("process-cwd", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should respect resolving directory with the "index" file from "process.cwd()"  (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId(
          "process-cwd-with-index-file-inside-directory",
          syntax
        );
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should work with a package with "sass" and "exports" fields (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-package-with-exports", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should support resolving using the "file" schema (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-file-scheme", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, {
          loader: { options },
          resolve: {
            alias: {
              "/language": path.resolve("./test", syntax, `language.${syntax}`),
            },
          },
        });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should resolve server-relative URLs (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-absolute-path", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should resolve absolute paths (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-absolute-path", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
          additionalData: (content) => {
            return content
              .replace(
                /\/scss\/language.scss/g,
                `file:///${path
                  .resolve(__dirname, "scss/language.scss")
                  .replace(/\\/g, "/")}`
              )
              .replace(
                /\/sass\/language.sass/g,
                `file:///${path
                  .resolve(__dirname, "sass/language.sass")
                  .replace(/\\/g, "/")}`
              );
          },
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should throw an error on ambiguous import (only on "dart-sass") (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("import-ambiguous", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);

        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      it(`should prefer relative import (${implementationName}) (${syntax})`, async () => {
        const testId = getTestId("package-with-same-import", syntax);
        const options = {
          implementation: getImplementationByName(implementationName),
        };
        const compiler = getCompiler(testId, { loader: { options } });
        const stats = await compile(compiler);
        const codeFromBundle = getCodeFromBundle(stats, compiler);
        const codeFromSass = getCodeFromSass(testId, options);

        expect(codeFromBundle.css).toBe(codeFromSass.css);
        expect(codeFromBundle.css).toMatchSnapshot("css");
        expect(getWarnings(stats)).toMatchSnapshot("warnings");
        expect(getErrors(stats)).toMatchSnapshot("errors");
      });

      if (implementation === dartSass) {
        it(`should output an understandable error with a problem in "@use" (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("error-use", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);

          expect(
            stats.compilation.fileDependencies.has(
              path.resolve(`./test/${syntax}/error-use.${syntax}`)
            )
          ).toBe(true);
          expect(
            stats.compilation.fileDependencies.has(
              path.resolve(`./test/${syntax}/error.${syntax}`)
            )
          ).toBe(true);
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should output an understandable error when a file could not be found using "@use" rule (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("error-file-not-found-use", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);

          expect(
            stats.compilation.fileDependencies.has(
              path.resolve(
                `./test/${syntax}/error-file-not-found-use.${syntax}`
              )
            )
          ).toBe(true);
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should throw an error with a explicit file and a file does not exist using "@use" rule (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("error-file-not-found-use-2", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);

          expect(
            stats.compilation.fileDependencies.has(
              path.resolve(
                `./test/${syntax}/error-file-not-found-use-2.${syntax}`
              )
            )
          ).toBe(true);
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work with different "@use" at-rules (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("uses", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work with "@use" at-rules from other language style (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-other-style", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" at-rules from scoped npm packages (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-from-npm-org-pkg", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" at-rules with extensions (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-with-extension", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" at-rules starting with "_" (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-with-underscore", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" at-rules without extensions and do not start with "_" (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId(
            "use-without-extension-and-underscore",
            syntax
          );
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "sass" field (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-sass-field", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "style" field (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-style-field", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "main" field (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-main-field", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "main" field when the "main" value is not in the "mainFields" resolve option (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-main-field", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, {
            loader: { options, resolve: { mainFields: [] } },
          });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "main" field when the "main" value already in the "mainFields" resolve option (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-main-field", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, {
            loader: { options, resolve: { mainFields: ["main", "..."] } },
          });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "custom-sass" field (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-custom-sass-field", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, {
            loader: {
              options,
              resolve: { mainFields: ["custom-sass", "..."] },
            },
          });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "index" file in package (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-index", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "index" file in package when the "index" value is not in the "mainFiles" resolve option (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-index", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, {
            loader: { options, resolve: { mainFiles: [] } },
          });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" and use the "index" file in package when the "index" value already in the "mainFiles" resolve option (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-index", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, {
            loader: { options, resolve: { mainFiles: ["index", "..."] } },
          });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use"and use the "_index" file in package (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-_index", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" with an alias (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-alias", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, {
            resolve: {
              alias: {
                "path-to-alias": path.resolve(
                  __dirname,
                  syntax,
                  "another",
                  `alias.${syntax}`
                ),
                "@sass": path.resolve(
                  __dirname,
                  "sass",
                  "directory-6",
                  "file",
                  "_index.sass"
                ),
                "@scss": path.resolve(
                  __dirname,
                  "scss",
                  "directory-6",
                  "file",
                  `_index.scss`
                ),
                "@path-to-scss-dir": path.resolve(__dirname, "scss"),
                "@path-to-sass-dir": path.resolve(__dirname, "sass"),
                "@/path-to-scss-dir": path.resolve(__dirname, "scss"),
                "@/path-to-sass-dir": path.resolve(__dirname, "sass"),
              },
            },
            loader: { options },
          });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" with the "bootstrap-sass" package, directly import (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-bootstrap-sass", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" with the "bootstrap-sass" package, import as a package (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-bootstrap-sass-package", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work when "@use" with the "bootstrap" package, import as a package (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-bootstrap", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work with the "material-components-web" package (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("import-material-components-web", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
            sassOptions: {
              includePaths: ["node_modules"],
            },
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work with the "material-components-web" package without the "includePaths" option (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("import-material-components-web", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work with the "material-components-web" package (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-material-components-web", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
            sassOptions: {
              includePaths: ["node_modules"],
            },
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should work with the "material-components-web" package without the "includePaths" option (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-material-components-web", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should import .import.${syntax} files (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("import-index-import", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should import .import.${syntax} files from a package (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("import-index-import-from-package", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);
          const codeFromBundle = getCodeFromBundle(stats, compiler);
          const codeFromSass = getCodeFromSass(testId, options);

          expect(codeFromBundle.css).toBe(codeFromSass.css);
          expect(codeFromBundle.css).toMatchSnapshot("css");
          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });

        it(`should not use .import.${syntax} files (${implementationName}) (${syntax})`, async () => {
          const testId = getTestId("use-index-import", syntax);
          const options = {
            implementation: getImplementationByName(implementationName),
          };
          const compiler = getCompiler(testId, { loader: { options } });
          const stats = await compile(compiler);

          expect(getWarnings(stats)).toMatchSnapshot("warnings");
          expect(getErrors(stats)).toMatchSnapshot("errors");
        });
      }
    });
  });
});