mirror of
https://github.com/flutter/flutter
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93 lines
3.7 KiB
Dart
93 lines
3.7 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:path/path.dart' as path;
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final String bat = Platform.isWindows ? '.bat' : '';
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final String _flutterBin = path.join(Directory.current.parent.parent.path, 'bin', 'flutter$bat');
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const String _integrationResultsPrefix = 'IntegrationTestWidgetsFlutterBinding test results:';
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const String _failureExcerpt = r'Expected: <false>\n Actual: <true>';
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Future<void> main() async {
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group('Integration binding result', () {
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test('when multiple tests pass', () async {
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final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'pass_test_script.dart'));
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expect(
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results,
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equals(<String, dynamic>{
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'passing test 1': 'success',
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'passing test 2': 'success',
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}));
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});
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test('when multiple tests fail', () async {
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final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'fail_test_script.dart'));
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expect(results, hasLength(2));
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expect(results, containsPair('failing test 1', contains(_failureExcerpt)));
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expect(results, containsPair('failing test 2', contains(_failureExcerpt)));
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});
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test('when one test passes, then another fails', () async {
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final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'pass_then_fail_test_script.dart'));
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expect(results, hasLength(2));
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expect(results, containsPair('passing test', equals('success')));
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expect(results, containsPair('failing test', contains(_failureExcerpt)));
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});
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test('when one test fails, then another passes', () async {
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final Map<String, dynamic>? results = await _runTest(path.join('test', 'data', 'fail_then_pass_test_script.dart'));
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expect(results, hasLength(2));
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expect(results, containsPair('failing test', contains(_failureExcerpt)));
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expect(results, containsPair('passing test', equals('success')));
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});
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});
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}
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/// Runs a test script and returns the [IntegrationTestWidgetsFlutterBinding.result].
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///
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/// [scriptPath] is relative to the package root.
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Future<Map<String, dynamic>?> _runTest(String scriptPath) async {
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final Process process =
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await Process.start(_flutterBin, <String>['test', '--machine', scriptPath]);
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/// In the test [tearDownAll] block, the test results are encoded into JSON and
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/// are printed with the [_integrationResultsPrefix] prefix.
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///
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/// See the following for the test event spec which we parse the printed lines
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/// out of: https://github.com/dart-lang/test/blob/master/pkgs/test/doc/json_reporter.md
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final String testResults = (await process.stdout
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.transform(utf8.decoder)
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.expand((String text) => text.split('\n'))
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.map<dynamic>((String line) {
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try {
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return jsonDecode(line);
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} on FormatException {
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// Only interested in test events which are JSON.
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}
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})
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.expand<Map<String, dynamic>>((dynamic json) {
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if (json is List<dynamic>) {
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return json.cast();
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}
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return <Map<String, dynamic>>[
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if (json != null)
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json as Map<String, dynamic>,
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];
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})
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.where((Map<String, dynamic> testEvent) => testEvent['type'] == 'print')
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.map((Map<String, dynamic> printEvent) => printEvent['message'] as String)
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.firstWhere((String message) => message.startsWith(_integrationResultsPrefix)))
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.replaceAll(_integrationResultsPrefix, '');
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return jsonDecode(testResults) as Map<String, dynamic>?;
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}
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