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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';
import 'dart:convert';
import 'dart:core';
import 'dart:io' hide Directory;
import 'dart:typed_data';
import 'dart:ui' show hashValues, hashList;
import 'package:file/file.dart';
import 'package:file/memory.dart';
import 'package:flutter_goldens/flutter_goldens.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:meta/meta.dart';
import 'package:platform/platform.dart';
import 'package:process/process.dart';
import 'json_templates.dart';
const String _kFlutterRoot = '/flutter';
// 1x1 transparent pixel
const List<int> _kTestPngBytes =
<int>[137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0,
1, 0, 0, 0, 1, 8, 6, 0, 0, 0, 31, 21, 196, 137, 0, 0, 0, 11, 73, 68, 65, 84,
120, 1, 99, 97, 0, 2, 0, 0, 25, 0, 5, 144, 240, 54, 245, 0, 0, 0, 0, 73, 69,
78, 68, 174, 66, 96, 130];
// 1x1 colored pixel
const List<int> _kFailPngBytes =
<int>[137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, 0,
1, 0, 0, 0, 1, 8, 6, 0, 0, 0, 31, 21, 196, 137, 0, 0, 0, 13, 73, 68, 65, 84,
120, 1, 99, 249, 207, 240, 255, 63, 0, 7, 18, 3, 2, 164, 147, 160, 197, 0,
0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130];
Future<void> testWithOutput(String name, Future<void> Function() body, String expectedOutput) async {
test(name, () async {
final StringBuffer output = StringBuffer();
void _recordPrint(Zone self, ZoneDelegate parent, Zone zone, String line) {
output.write(line);
}
await runZoned<Future<void>>(body, zoneSpecification: ZoneSpecification(print: _recordPrint));
expect(output.toString(), expectedOutput);
});
}
void main() {
late MemoryFileSystem fs;
late FakePlatform platform;
late FakeProcessManager process;
late FakeHttpClient fakeHttpClient;
setUp(() {
fs = MemoryFileSystem();
platform = FakePlatform(
environment: <String, String>{'FLUTTER_ROOT': _kFlutterRoot},
operatingSystem: 'macos'
);
process = FakeProcessManager();
fakeHttpClient = FakeHttpClient();
fs.directory(_kFlutterRoot).createSync(recursive: true);
});
group('SkiaGoldClient', () {
late SkiaGoldClient skiaClient;
late Directory workDirectory;
setUp(() {
workDirectory = fs.directory('/workDirectory')
..createSync(recursive: true);
skiaClient = SkiaGoldClient(
workDirectory,
fs: fs,
process: process,
platform: platform,
httpClient: fakeHttpClient,
);
});
test('auth performs minimal work if already authorized', () async {
final File authFile = fs.file('/workDirectory/temp/auth_opt.json')
..createSync(recursive: true);
authFile.writeAsStringSync(authTemplate());
process.fallbackProcessResult = ProcessResult(123, 0, '', '');
await skiaClient.auth();
expect(process.workingDirectories, isEmpty);
});
test('gsutil is checked when authorization file is present', () async {
final File authFile = fs.file('/workDirectory/temp/auth_opt.json')
..createSync(recursive: true);
authFile.writeAsStringSync(authTemplate(gsutil: true));
expect(
await skiaClient.clientIsAuthorized(),
isFalse,
);
});
test('throws for error state from auth', () async {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'GOLD_SERVICE_ACCOUNT' : 'Service Account',
'GOLDCTL' : 'goldctl',
},
operatingSystem: 'macos'
);
skiaClient = SkiaGoldClient(
workDirectory,
fs: fs,
process: process,
platform: platform,
httpClient: fakeHttpClient,
);
process.fallbackProcessResult = ProcessResult(123, 1, 'fail', 'fail');
expect(
skiaClient.auth(),
throwsException,
);
});
test('throws for error state from init', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'GOLDCTL' : 'goldctl',
},
operatingSystem: 'macos'
);
skiaClient = SkiaGoldClient(
workDirectory,
fs: fs,
process: process,
platform: platform,
httpClient: fakeHttpClient,
);
process.fallbackProcessResult = ProcessResult(123, 1, 'fail', 'fail');
const RunInvocation gitInvocation = RunInvocation(
<String>['git', 'rev-parse', 'HEAD'],
'/flutter',
);
const RunInvocation goldctlInvocation = RunInvocation(
<String>[
'goldctl',
'imgtest', 'init',
'--instance', 'flutter',
'--work-dir', '/workDirectory/temp',
'--commit', '12345678',
'--keys-file', '/workDirectory/keys.json',
'--failure-file', '/workDirectory/failures.json',
'--passfail',
],
null,
);
process.processResults[gitInvocation] = ProcessResult(12345678, 0, '12345678', '');
process.processResults[goldctlInvocation] = ProcessResult(123, 1, 'fail', 'fail');
expect(
skiaClient.imgtestInit(),
throwsException,
);
});
test('correctly inits tryjob for luci', () async {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'GOLDCTL' : 'goldctl',
'SWARMING_TASK_ID' : '4ae997b50dfd4d11',
'LOGDOG_STREAM_PREFIX' : 'buildbucket/cr-buildbucket.appspot.com/8885996262141582672',
'GOLD_TRYJOB' : 'refs/pull/49815/head',
},
operatingSystem: 'macos'
);
skiaClient = SkiaGoldClient(
workDirectory,
fs: fs,
process: process,
platform: platform,
httpClient: fakeHttpClient,
);
final List<String> ciArguments = skiaClient.getCIArguments();
expect(
ciArguments,
equals(
<String>[
'--changelist', '49815',
'--cis', 'buildbucket',
'--jobid', '8885996262141582672',
],
),
);
});
test('Creates traceID correctly', () {
String traceID;
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'GOLDCTL' : 'goldctl',
'SWARMING_TASK_ID' : '4ae997b50dfd4d11',
'LOGDOG_STREAM_PREFIX' : 'buildbucket/cr-buildbucket.appspot.com/8885996262141582672',
'GOLD_TRYJOB' : 'refs/pull/49815/head',
},
operatingSystem: 'linux'
);
skiaClient = SkiaGoldClient(
workDirectory,
fs: fs,
process: process,
platform: platform,
httpClient: fakeHttpClient,
);
traceID = skiaClient.getTraceID('flutter.golden.1');
expect(
traceID,
equals(',CI=luci,Platform=linux,name=flutter.golden.1,source_type=flutter,'),
);
// Browser
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'GOLDCTL' : 'goldctl',
'SWARMING_TASK_ID' : '4ae997b50dfd4d11',
'LOGDOG_STREAM_PREFIX' : 'buildbucket/cr-buildbucket.appspot.com/8885996262141582672',
'GOLD_TRYJOB' : 'refs/pull/49815/head',
'FLUTTER_TEST_BROWSER' : 'chrome',
},
operatingSystem: 'linux'
);
skiaClient = SkiaGoldClient(
workDirectory,
fs: fs,
process: process,
platform: platform,
httpClient: fakeHttpClient,
);
traceID = skiaClient.getTraceID('flutter.golden.1');
expect(
traceID,
equals(',Browser=chrome,CI=luci,Platform=linux,name=flutter.golden.1,source_type=flutter,'),
);
// Locally - should defer to luci traceID
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
},
operatingSystem: 'macos'
);
skiaClient = SkiaGoldClient(
workDirectory,
fs: fs,
process: process,
platform: platform,
httpClient: fakeHttpClient,
);
traceID = skiaClient.getTraceID('flutter.golden.1');
expect(
traceID,
equals(',CI=luci,Platform=macos,name=flutter.golden.1,source_type=flutter,'),
);
});
group('Request Handling', () {
const String expectation = '55109a4bed52acc780530f7a9aeff6c0';
test('image bytes are processed properly', () async {
final Uri imageUrl = Uri.parse(
'https://flutter-gold.skia.org/img/images/$expectation.png'
);
final FakeHttpClientRequest fakeImageRequest = FakeHttpClientRequest();
final FakeHttpImageResponse fakeImageResponse = FakeHttpImageResponse(
imageResponseTemplate()
);
fakeHttpClient.request = fakeImageRequest;
fakeImageRequest.response = fakeImageResponse;
final List<int> masterBytes = await skiaClient.getImageBytes(expectation);
expect(fakeHttpClient.lastUri, imageUrl);
expect(masterBytes, equals(_kTestPngBytes));
});
});
});
group('FlutterGoldenFileComparator', () {
late FlutterPostSubmitFileComparator comparator;
setUp(() {
final Directory basedir = fs.directory('flutter/test/library/')
..createSync(recursive: true);
comparator = FlutterPostSubmitFileComparator(
basedir.uri,
FakeSkiaGoldClient(),
fs: fs,
platform: platform,
);
});
test('calculates the basedir correctly from defaultComparator for local testing', () async {
final FakeLocalFileComparator defaultComparator = FakeLocalFileComparator();
final Directory flutterRoot = fs.directory(platform.environment['FLUTTER_ROOT'])
..createSync(recursive: true);
defaultComparator.basedir = flutterRoot.childDirectory('baz').uri;
final Directory basedir = FlutterGoldenFileComparator.getBaseDirectory(
defaultComparator,
platform,
local: true,
);
expect(
basedir.uri,
fs.directory('/flutter/bin/cache/pkg/skia_goldens/baz').uri,
);
});
test('ignores version number', () {
final Uri key = comparator.getTestUri(Uri.parse('foo.png'), 1);
expect(key, Uri.parse('foo.png'));
});
group('Post-Submit', () {
final FakeSkiaGoldClient fakeSkiaClient = FakeSkiaGoldClient();
setUp(() {
final Directory basedir = fs.directory('flutter/test/library/')
..createSync(recursive: true);
comparator = FlutterPostSubmitFileComparator(
basedir.uri,
fakeSkiaClient,
fs: fs,
platform: platform,
);
});
group('correctly determines testing environment', () {
test('returns true for configured Luci', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'SWARMING_TASK_ID' : '12345678990',
'GOLDCTL' : 'goldctl',
},
operatingSystem: 'macos'
);
expect(
FlutterPostSubmitFileComparator.isAvailableForEnvironment(platform),
isTrue,
);
});
test('returns false - GOLDCTL not present', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'SWARMING_TASK_ID' : '12345678990',
},
operatingSystem: 'macos'
);
expect(
FlutterPostSubmitFileComparator.isAvailableForEnvironment(platform),
isFalse,
);
});
test('returns false - GOLD_TRYJOB active', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'SWARMING_TASK_ID' : '12345678990',
'GOLDCTL' : 'goldctl',
'GOLD_TRYJOB' : 'git/ref/12345/head'
},
operatingSystem: 'macos'
);
expect(
FlutterPostSubmitFileComparator.isAvailableForEnvironment(platform),
isFalse,
);
});
test('returns false - on Cirrus', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'CIRRUS_CI': 'true',
'CIRRUS_PR': '',
'CIRRUS_BRANCH': 'master',
'GOLD_SERVICE_ACCOUNT': 'service account...'
},
operatingSystem: 'macos'
);
expect(
FlutterPostSubmitFileComparator.isAvailableForEnvironment(platform),
isFalse,
);
});
});
});
group('Pre-Submit', () {
group('correctly determines testing environment', () {
test('returns true for Luci', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'SWARMING_TASK_ID' : '12345678990',
'GOLDCTL' : 'goldctl',
'GOLD_TRYJOB' : 'git/ref/12345/head'
},
operatingSystem: 'macos'
);
expect(
FlutterPreSubmitFileComparator.isAvailableForEnvironment(platform),
isTrue,
);
});
test('returns false - not on Luci', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
},
operatingSystem: 'macos'
);
expect(
FlutterPreSubmitFileComparator.isAvailableForEnvironment(platform),
isFalse,
);
});
test('returns false - GOLDCTL missing', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'SWARMING_TASK_ID' : '12345678990',
'GOLD_TRYJOB' : 'git/ref/12345/head'
},
operatingSystem: 'macos'
);
expect(
FlutterPreSubmitFileComparator.isAvailableForEnvironment(platform),
isFalse,
);
});
test('returns false - GOLD_TRYJOB missing', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'SWARMING_TASK_ID' : '12345678990',
'GOLDCTL' : 'goldctl',
},
operatingSystem: 'macos'
);
expect(
FlutterPreSubmitFileComparator.isAvailableForEnvironment(platform),
isFalse,
);
});
test('returns false - on Cirrus', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'CIRRUS_CI': 'true',
'CIRRUS_PR': '',
'CIRRUS_BRANCH': 'master',
'GOLD_SERVICE_ACCOUNT': 'service account...'
},
operatingSystem: 'macos'
);
expect(
FlutterPostSubmitFileComparator.isAvailableForEnvironment(platform),
isFalse,
);
});
});
});
group('Skipping', () {
group('correctly determines testing environment', () {
test('returns true on Cirrus builds', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'CIRRUS_CI' : 'yep',
},
operatingSystem: 'macos'
);
expect(
FlutterSkippingFileComparator.isAvailableForEnvironment(platform),
isTrue,
);
});
test('returns true on irrelevant LUCI builds', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
'SWARMING_TASK_ID' : '1234567890',
},
operatingSystem: 'macos'
);
expect(
FlutterSkippingFileComparator.isAvailableForEnvironment(platform),
isTrue,
);
});
test('returns false - no CI', () {
platform = FakePlatform(
environment: <String, String>{
'FLUTTER_ROOT': _kFlutterRoot,
},
operatingSystem: 'macos'
);
expect(
FlutterSkippingFileComparator.isAvailableForEnvironment(
platform),
isFalse,
);
});
});
});
group('Local', () {
late FlutterLocalFileComparator comparator;
final FakeSkiaGoldClient fakeSkiaClient = FakeSkiaGoldClient();
setUp(() async {
final Directory basedir = fs.directory('flutter/test/library/')
..createSync(recursive: true);
comparator = FlutterLocalFileComparator(
basedir.uri,
fakeSkiaClient,
fs: fs,
platform: FakePlatform(
environment: <String, String>{'FLUTTER_ROOT': _kFlutterRoot},
operatingSystem: 'macos'
),
);
const String hash = '55109a4bed52acc780530f7a9aeff6c0';
fakeSkiaClient.expectationForTestValues['flutter.golden_test.1'] = hash;
fakeSkiaClient.expectationForTestValues['flutter.new_golden_test.1'] = '';
fakeSkiaClient.imageBytesValues[hash] =_kTestPngBytes;
fakeSkiaClient.cleanTestNameValues['library.flutter.golden_test.1.png'] = 'flutter.golden_test.1';
});
test('passes when bytes match', () async {
expect(
await comparator.compare(
Uint8List.fromList(_kTestPngBytes),
Uri.parse('flutter.golden_test.1.png'),
),
isTrue,
);
});
testWithOutput('passes non-existent baseline for new test, null expectation', () async {
expect(
await comparator.compare(
Uint8List.fromList(_kFailPngBytes),
Uri.parse('flutter.new_golden_test.1'),
),
isTrue,
);
}, 'No expectations provided by Skia Gold for test: library.flutter.new_golden_test.1. '
'This may be a new test. If this is an unexpected result, check https://flutter-gold.skia.org.\n'
'Validate image output found at flutter/test/library/'
);
testWithOutput('passes non-existent baseline for new test, empty expectation', () async {
expect(
await comparator.compare(
Uint8List.fromList(_kFailPngBytes),
Uri.parse('flutter.new_golden_test.2'),
),
isTrue,
);
}, 'No expectations provided by Skia Gold for test: library.flutter.new_golden_test.2. '
'This may be a new test. If this is an unexpected result, check https://flutter-gold.skia.org.\n'
'Validate image output found at flutter/test/library/'
);
test('compare properly awaits validation & output before failing.', () async {
final Completer<bool> completer = Completer<bool>();
final Future<bool> result = comparator.compare(
Uint8List.fromList(_kFailPngBytes),
Uri.parse('flutter.golden_test.1.png'),
);
bool shouldThrow = true;
result.then((_) {
if (shouldThrow)
fail('Compare completed before validation completed!');
});
await Future<void>.value();
shouldThrow = false;
completer.complete(Future<bool>.value(false));
});
test('returns FlutterSkippingGoldenFileComparator when network connection is unavailable', () async {
final FakeDirectory fakeDirectory = FakeDirectory();
fakeDirectory.existsSyncValue = true;
fakeDirectory.uri = Uri.parse('/flutter');
fakeSkiaClient.getExpectationForTestThrowable = const OSError("Can't reach Gold");
FlutterGoldenFileComparator comparator = await FlutterLocalFileComparator.fromDefaultComparator(
platform,
goldens: fakeSkiaClient,
baseDirectory: fakeDirectory,
);
expect(comparator.runtimeType, FlutterSkippingFileComparator);
fakeSkiaClient.getExpectationForTestThrowable = const SocketException("Can't reach Gold");
comparator = await FlutterLocalFileComparator.fromDefaultComparator(
platform,
goldens: fakeSkiaClient,
baseDirectory: fakeDirectory,
);
expect(comparator.runtimeType, FlutterSkippingFileComparator);
});
});
});
}
@immutable
class RunInvocation {
const RunInvocation(this.command, this.workingDirectory);
final List<String> command;
final String? workingDirectory;
@override
int get hashCode => hashValues(hashList(command), workingDirectory);
bool _commandEquals(List<String> other) {
if (other == command) {
return true;
}
if (other.length != command.length) {
return false;
}
for (int index = 0; index < other.length; index += 1) {
if (other[index] != command[index]) {
return false;
}
}
return true;
}
@override
bool operator ==(Object other) {
if (other.runtimeType != runtimeType) {
return false;
}
return other is RunInvocation
&& _commandEquals(other.command)
&& other.workingDirectory == workingDirectory;
}
@override
String toString() => '$command ($workingDirectory)';
}
class FakeProcessManager extends Fake implements ProcessManager {
Map<RunInvocation, ProcessResult> processResults = <RunInvocation, ProcessResult>{};
/// Used if [processResults] does not contain a matching invocation.
ProcessResult? fallbackProcessResult;
final List<String?> workingDirectories = <String?>[];
@override
Future<ProcessResult> run(
List<Object> command, {
String? workingDirectory,
Map<String, String>? environment,
bool includeParentEnvironment = true,
bool runInShell = false,
Encoding stdoutEncoding = systemEncoding,
Encoding stderrEncoding = systemEncoding,
}) async {
workingDirectories.add(workingDirectory);
final ProcessResult? result = processResults[RunInvocation(command.cast<String>(), workingDirectory)];
if (result == null && fallbackProcessResult == null) {
// Throwing here might gobble up the exception message if a test fails.
print('ProcessManager.run was called with $command ($workingDirectory) unexpectedly - $processResults.');
fail('See above.');
}
return result ?? fallbackProcessResult!;
}
}
class FakeSkiaGoldClient extends Fake implements SkiaGoldClient {
Map<String, String> expectationForTestValues = <String, String>{};
Object? getExpectationForTestThrowable;
@override
Future<String> getExpectationForTest(String testName) async {
if (getExpectationForTestThrowable != null) {
throw getExpectationForTestThrowable!;
}
return expectationForTestValues[testName] ?? '';
}
Map<String, List<int>> imageBytesValues = <String, List<int>>{};
@override
Future<List<int>> getImageBytes(String imageHash) async => imageBytesValues[imageHash]!;
Map<String, String> cleanTestNameValues = <String, String>{};
@override
String cleanTestName(String fileName) => cleanTestNameValues[fileName] ?? '';
}
class FakeLocalFileComparator extends Fake implements LocalFileComparator {
@override
late Uri basedir;
}
class FakeDirectory extends Fake implements Directory {
late bool existsSyncValue;
@override
bool existsSync() => existsSyncValue;
@override
late Uri uri;
}
class FakeHttpClient extends Fake implements HttpClient {
late Uri lastUri;
late FakeHttpClientRequest request;
@override
Future<HttpClientRequest> getUrl(Uri url) async {
lastUri = url;
return request;
}
}
class FakeHttpClientRequest extends Fake implements HttpClientRequest {
late FakeHttpImageResponse response;
@override
Future<HttpClientResponse> close() async {
return response;
}
}
class FakeHttpClientResponse extends Fake implements HttpClientResponse {
FakeHttpClientResponse(this.response);
final List<int> response;
@override
StreamSubscription<List<int>> listen(
void Function(List<int> event)? onData, {
Function? onError,
void Function()? onDone,
bool? cancelOnError,
}) {
return Stream<List<int>>.fromFuture(Future<List<int>>.value(response))
.listen(onData, onError: onError, onDone: onDone, cancelOnError: cancelOnError);
}
}
class FakeHttpImageResponse extends Fake implements HttpClientResponse {
FakeHttpImageResponse(this.response);
final List<List<int>> response;
@override
Future<void> forEach(void Function(List<int> element) action) async {
response.forEach(action);
}
}