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dart_api_test.dart
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dart_api_test.dart
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// Copyright 2017 Google Inc. Use of this source code is governed by an
// MIT-style license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT.
import 'package:package_config/package_config.dart';
import 'package:path/path.dart' as p;
import 'package:test/test.dart';
import 'package:test_descriptor/test_descriptor.dart' as d;
import 'package:sass/sass.dart';
import 'package:sass/src/exception.dart';
void main() {
// TODO(nweiz): test SASS_PATH when dart-lang/sdk#28160 is fixed.
group("importers", () {
test("is used to resolve imports", () async {
await d.dir("subdir", [d.file("subtest.scss", "a {b: c}")]).create();
await d.file("test.scss", '@import "subtest.scss";').create();
var css = compile(d.path("test.scss"),
importers: [FilesystemImporter(d.path('subdir'))]);
expect(css, equals("a {\n b: c;\n}"));
});
test("are checked in order", () async {
await d
.dir("first", [d.file("other.scss", "a {b: from-first}")]).create();
await d
.dir("second", [d.file("other.scss", "a {b: from-second}")]).create();
await d.file("test.scss", '@import "other";').create();
var css = compile(d.path("test.scss"), importers: [
FilesystemImporter(d.path('first')),
FilesystemImporter(d.path('second'))
]);
expect(css, equals("a {\n b: from-first;\n}"));
});
});
group("loadPaths", () {
test("is used to import file: URLs", () async {
await d.dir("subdir", [d.file("subtest.scss", "a {b: c}")]).create();
await d.file("test.scss", '@import "subtest.scss";').create();
var css = compile(d.path("test.scss"), loadPaths: [d.path('subdir')]);
expect(css, equals("a {\n b: c;\n}"));
});
test("can import partials", () async {
await d.dir("subdir", [d.file("_subtest.scss", "a {b: c}")]).create();
await d.file("test.scss", '@import "subtest.scss";').create();
var css = compile(d.path("test.scss"), loadPaths: [d.path('subdir')]);
expect(css, equals("a {\n b: c;\n}"));
});
test("adds a .scss extension", () async {
await d.dir("subdir", [d.file("subtest.scss", "a {b: c}")]).create();
await d.file("test.scss", '@import "subtest";').create();
var css = compile(d.path("test.scss"), loadPaths: [d.path('subdir')]);
expect(css, equals("a {\n b: c;\n}"));
});
test("adds a .sass extension", () async {
await d.dir("subdir", [d.file("subtest.sass", "a\n b: c")]).create();
await d.file("test.scss", '@import "subtest";').create();
var css = compile(d.path("test.scss"), loadPaths: [d.path('subdir')]);
expect(css, equals("a {\n b: c;\n}"));
});
test("are checked in order", () async {
await d
.dir("first", [d.file("other.scss", "a {b: from-first}")]).create();
await d
.dir("second", [d.file("other.scss", "a {b: from-second}")]).create();
await d.file("test.scss", '@import "other";').create();
var css = compile(d.path("test.scss"),
loadPaths: [d.path('first'), d.path('second')]);
expect(css, equals("a {\n b: from-first;\n}"));
});
});
group("packageResolver", () {
test("is used to import package: URLs", () async {
await d.dir("subdir", [d.file("test.scss", "a {b: 1 + 2}")]).create();
await d
.file("test.scss", '@import "package:fake_package/test";')
.create();
var config =
PackageConfig([Package('fake_package', p.toUri(d.path('subdir/')))]);
var css = compile(d.path("test.scss"), packageConfig: config);
expect(css, equals("a {\n b: 3;\n}"));
});
test("can resolve relative paths in a package", () async {
await d.dir("subdir", [
d.file("test.scss", "@import 'other'"),
d.file("_other.scss", "a {b: 1 + 2}"),
]).create();
await d
.file("test.scss", '@import "package:fake_package/test";')
.create();
var config =
PackageConfig([Package('fake_package', p.toUri(d.path('subdir/')))]);
var css = compile(d.path("test.scss"), packageConfig: config);
expect(css, equals("a {\n b: 3;\n}"));
});
test("doesn't import a package URL from a missing package", () async {
await d
.file("test.scss", '@import "package:fake_package/test_aux";')
.create();
expect(
() => compile(d.path("test.scss"), packageConfig: PackageConfig([])),
throwsA(const TypeMatcher<SassRuntimeException>()));
});
});
group("import precedence", () {
test("relative imports take precedence over importers", () async {
await d.dir(
"subdir", [d.file("other.scss", "a {b: from-load-path}")]).create();
await d.file("other.scss", "a {b: from-relative}").create();
await d.file("test.scss", '@import "other";').create();
var css = compile(d.path("test.scss"),
importers: [FilesystemImporter(d.path('subdir'))]);
expect(css, equals("a {\n b: from-relative;\n}"));
});
test("the original importer takes precedence over other importers",
() async {
await d.dir(
"original", [d.file("other.scss", "a {b: from-original}")]).create();
await d
.dir("other", [d.file("other.scss", "a {b: from-other}")]).create();
var css = compileString('@import "other";',
importer: FilesystemImporter(d.path('original')),
url: p.toUri(d.path('original/test.scss')),
importers: [FilesystemImporter(d.path('other'))]);
expect(css, equals("a {\n b: from-original;\n}"));
});
test("importers take precedence over load paths", () async {
await d.dir("load-path",
[d.file("other.scss", "a {b: from-load-path}")]).create();
await d.dir(
"importer", [d.file("other.scss", "a {b: from-importer}")]).create();
await d.file("test.scss", '@import "other";').create();
var css = compile(d.path("test.scss"),
importers: [FilesystemImporter(d.path('importer'))],
loadPaths: [d.path('load-path')]);
expect(css, equals("a {\n b: from-importer;\n}"));
});
test("importers take precedence over packageConfig", () async {
await d.dir("package",
[d.file("other.scss", "a {b: from-package-config}")]).create();
await d.dir(
"importer", [d.file("other.scss", "a {b: from-importer}")]).create();
await d
.file("test.scss", '@import "package:fake_package/other";')
.create();
var css = compile(d.path("test.scss"),
importers: [
PackageImporter(PackageConfig(
[Package('fake_package', p.toUri(d.path('importer/')))]))
],
packageConfig: PackageConfig(
[Package('fake_package', p.toUri(d.path('package/')))]));
expect(css, equals("a {\n b: from-importer;\n}"));
});
});
group("charset", () {
group("= true", () {
test("doesn't emit @charset for a pure-ASCII stylesheet", () {
expect(compileString("a {b: c}"), equals("""
a {
b: c;
}"""));
});
test("emits @charset with expanded output", () async {
expect(compileString("a {b: 👭}"), equals("""
@charset "UTF-8";
a {
b: 👭;
}"""));
});
test("emits a BOM with compressed output", () async {
expect(compileString("a {b: 👭}", style: OutputStyle.compressed),
equals("\u{FEFF}a{b:👭}"));
});
});
group("= false", () {
test("doesn't emit @charset with expanded output", () async {
expect(compileString("a {b: 👭}", charset: false), equals("""
a {
b: 👭;
}"""));
});
test("emits a BOM with compressed output", () async {
expect(
compileString("a {b: 👭}",
charset: false, style: OutputStyle.compressed),
equals("a{b:👭}"));
});
});
});
group("loadedUrls", () {
group("contains the entrypoint's URL", () {
group("in compileStringToResult()", () {
test("if it's given", () {
var result = compileStringToResult("a {b: c}", url: "source.scss");
expect(result.loadedUrls, equals([Uri.parse("source.scss")]));
});
test("unless it's not given", () {
var result = compileStringToResult("a {b: c}");
expect(result.loadedUrls, isEmpty);
});
});
test("in compileToResult()", () async {
await d.file("input.scss", "a {b: c};").create();
var result = compileToResult(d.path('input.scss'));
expect(result.loadedUrls, equals([p.toUri(d.path('input.scss'))]));
});
});
test("contains a URL loaded via @import", () async {
await d.file("_other.scss", "a {b: c}").create();
await d.file("input.scss", "@import 'other';").create();
var result = compileToResult(d.path('input.scss'));
expect(result.loadedUrls, contains(p.toUri(d.path('_other.scss'))));
});
test("contains a URL loaded via @use", () async {
await d.file("_other.scss", "a {b: c}").create();
await d.file("input.scss", "@use 'other';").create();
var result = compileToResult(d.path('input.scss'));
expect(result.loadedUrls, contains(p.toUri(d.path('_other.scss'))));
});
test("contains a URL loaded via @forward", () async {
await d.file("_other.scss", "a {b: c}").create();
await d.file("input.scss", "@forward 'other';").create();
var result = compileToResult(d.path('input.scss'));
expect(result.loadedUrls, contains(p.toUri(d.path('_other.scss'))));
});
test("contains a URL loaded via @meta.load-css()", () async {
await d.file("_other.scss", "a {b: c}").create();
await d.file("input.scss", """
@use 'sass:meta';
@include meta.load-css('other');
""").create();
var result = compileToResult(d.path('input.scss'));
expect(result.loadedUrls, contains(p.toUri(d.path('_other.scss'))));
});
test("contains a URL loaded via a chain of loads", () async {
await d.file("_jupiter.scss", "a {b: c}").create();
await d.file("_mars.scss", "@forward 'jupiter';").create();
await d.file("_earth.scss", "@import 'mars';").create();
await d.file("_venus.scss", "@use 'earth';").create();
await d.file("mercury.scss", """
@use 'sass:meta';
@include meta.load-css('venus');
""").create();
var result = compileToResult(d.path('mercury.scss'));
expect(
result.loadedUrls,
unorderedEquals([
p.toUri(d.path('mercury.scss')),
p.toUri(d.path('_venus.scss')),
p.toUri(d.path('_earth.scss')),
p.toUri(d.path('_mars.scss')),
p.toUri(d.path('_jupiter.scss'))
]));
});
});
// Regression test for #1318
test("meta.load-module() doesn't have a race condition", () async {
await d.file("other.scss", '/**//**/').create();
expect(compileStringAsync("""
@use 'sass:meta';
@include meta.load-css("other.scss");
""", loadPaths: [d.sandbox]), completion(equals("/**/ /**/")));
// Give the race condition time to appear.
await pumpEventQueue();
});
}