Refactor production tests (#8073)

# Conflicts:
#	scripts/test-dist.js

.github/workflows/prod-test.yml

@@ -99,8 +99,13 @@ jobs:
           name: dist
           path: dist
 
-      - name: Run Tests
-        run: yarn test:dist
+      - name: Run Tests (macOS)
+        if: matrix.os == 'macos-latest'
+        run: yarn test:dist --maxWorkers=4
+
+      - name: Run Tests (Linux and Windows)
+        if: matrix.os != 'macos-latest'
+        run: yarn test:dist --maxWorkers=2
 
   standalone:
     strategy:
@@ -117,8 +122,6 @@ jobs:
         exclude:
           - os: "macos-latest"
             node: "13"
-    env:
-      STANDALONE: true
     name: Node.js ${{ matrix.node }} on ${{ matrix.os }} (standalone)
     runs-on: ${{ matrix.os }}
     needs: [build]
@@ -142,5 +145,10 @@ jobs:
           name: dist
           path: dist
 
-      - name: Run Tests
-        run: yarn test:dist
+      - name: Run Tests (macOS)
+        if: matrix.os == 'macos-latest'
+        run: yarn test:dist-standalone --maxWorkers=4
+
+      - name: Run Tests (Linux and Windows)
+        if: matrix.os != 'macos-latest'
+        run: yarn test:dist-standalone --maxWorkers=2

jest.config.js

@@ -1,5 +1,11 @@
 "use strict";
+
+const installPrettier = require("./scripts/install-prettier");
+
 const ENABLE_CODE_COVERAGE = !!process.env.ENABLE_CODE_COVERAGE;
+if (process.env.NODE_ENV === "production") {
+  process.env.PRETTIER_DIR = installPrettier();
+}
 
 module.exports = {
   setupFiles: ["<rootDir>/tests_config/run_spec.js"],

package.json

@@ -115,7 +115,8 @@
     "prepublishOnly": "echo \"Error: must publish from dist/\" && exit 1",
     "prepare-release": "yarn && yarn build && yarn test:dist",
     "test": "jest",
-    "test:dist": "node ./scripts/test-dist.js",
+    "test:dist": "cross-env NODE_ENV=production jest",
+    "test:dist-standalone": "cross-env NODE_ENV=production STANDALONE=1 jest tests/",
     "test:integration": "jest tests_integration",
     "perf:repeat": "yarn && yarn build && cross-env NODE_ENV=production node ./dist/bin-prettier.js --debug-repeat ${PERF_REPEAT:-1000} --loglevel debug ${PERF_FILE:-./index.js} > /dev/null",
     "perf:repeat-inspect": "yarn && yarn build && cross-env NODE_ENV=production node --inspect-brk ./dist/bin-prettier.js --debug-repeat ${PERF_REPEAT:-1000} --loglevel debug ${PERF_FILE:-./index.js} > /dev/null",

scripts/install-prettier.js

@@ -0,0 +1,23 @@
+"use strict";
+
+const path = require("path");
+const shell = require("shelljs");
+const tempy = require("tempy");
+
+shell.config.fatal = true;
+
+const rootDir = path.join(__dirname, "..");
+const distDir = path.join(rootDir, "dist");
+
+module.exports = () => {
+  const file = shell.exec("npm pack", { cwd: distDir }).stdout.trim();
+  const tarPath = path.join(distDir, file);
+  const tmpDir = tempy.directory();
+
+  shell.config.silent = true;
+  shell.exec("npm init -y", { cwd: tmpDir });
+  shell.exec(`npm install "${tarPath}"`, { cwd: tmpDir });
+  shell.config.silent = false;
+
+  return path.join(tmpDir, "node_modules/prettier");
+};