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42 lines
1.5 KiB
Dart
42 lines
1.5 KiB
Dart
// Copyright 2018 Google Inc. Use of this source code is governed by an
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// MIT-style license that can be found in the LICENSE file or at
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// https://opensource.org/licenses/MIT.
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import 'dart:convert';
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import 'package:path/path.dart' as p;
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import 'package:test/test.dart';
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import 'package:sass/src/io.dart';
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/// A regular expression for matching the URL in a source map comment.
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final _sourceMapCommentRegExp = RegExp(r"/\*# sourceMappingURL=(.*) \*/\s*$");
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/// Returns a [Future] that waits long enough for modification times to be
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/// different.
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///
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/// Windows (or at least Appveyor) seems to require a more coarse-grained time
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/// than Unixes.
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Future<void> get tick =>
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Future.delayed(Duration(milliseconds: isWindows ? 1000 : 50));
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/// Loads and decodes the source map embedded as a `data:` URI in [css].
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///
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/// Throws a [TestFailure] if [css] doesn't have such a source map.
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Map<String, dynamic> embeddedSourceMap(String css) {
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expect(css, matches(_sourceMapCommentRegExp));
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var match = _sourceMapCommentRegExp.firstMatch(css)!;
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var data = Uri.parse(match[1]!).data!;
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expect(data.mimeType, equals("application/json"));
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return jsonDecode(data.contentAsString()) as Map<String, dynamic>;
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}
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/// Returns a function with one argument that fails the test if it's ever
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/// called.
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Never Function(Object? arg) get expectNever1 =>
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expectAsync1((_) => throw '', count: 0);
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// Like `p.prettyUri()`, but for a non-URL path.
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String prettyPath(String path) => p.prettyUri(p.toUri(path));
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