// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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@TestOn('vm')
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import 'dart:io';
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import 'package:test/test.dart';
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import 'package:path/path.dart' as p;
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void main() {
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test('README example', () {
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final readmeContent = File('README.md').readAsStringSync();
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final exampleContent = _getExampleContent('example.dart');
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expect(readmeContent, contains(exampleContent));
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final exampleGeneratedContent = _getExampleContent('example.g.dart');
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expect(readmeContent, contains(exampleGeneratedContent));
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});
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}
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String _getExampleContent(String fileName) {
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final lines = File(p.join('example', fileName)).readAsLinesSync();
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var lastHadContent = false;
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// All lines with content, except those starting with `/`.
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// Also exclude blank lines that follow other blank lines
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final cleanedSource = lines.where((l) {
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if (l.startsWith(r'/')) {
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return false;
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}
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if (l.trim().isNotEmpty) {
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lastHadContent = true;
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return true;
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}
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if (lastHadContent) {
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lastHadContent = false;
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return true;
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}
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return false;
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}).join('\n');
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return '''
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```dart
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$cleanedSource
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```''';
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}
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