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23 lines
901 B
Dart
23 lines
901 B
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 'package:dart2_constant/convert.dart' as convert;
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import 'package:test/test.dart';
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/// A regular expression for matching the URL in a source map comment.
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final _sourceMapCommentRegExp =
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new RegExp(r"/\*# sourceMappingURL=(.*) \*/\s*$");
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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, Object> 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 convert.json.decode(data.contentAsString()) as Map<String, Object>;
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}
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