| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| library unittest.simple_configuration; |
| |
| import 'dart:isolate'; |
| |
| import 'matcher.dart' |
| show DefaultFailureHandler, configureExpectFailureHandler, TestFailure; |
| |
| import '../unittest.dart'; |
| import 'internal_test_case.dart'; |
| import 'utils.dart'; |
| |
| // A custom failure handler for [expect] that routes failures to the |
| // [SimpleConfiguration]. |
| class _ExpectFailureHandler extends DefaultFailureHandler { |
| final SimpleConfiguration _config; |
| |
| _ExpectFailureHandler(this._config); |
| |
| void fail(String reason) { |
| _config.onExpectFailure(reason); |
| } |
| } |
| |
| /// A configuration that provides hooks to configure the unittest library for |
| /// different platforms. |
| /// |
| /// This class implements the [Configuration] API in a platform-independent way. |
| /// Tests that want to take advantage of the platform can create a subclass and |
| /// override methods from this class. |
| class SimpleConfiguration extends Configuration { |
| /// A port that keeps the VM alive while we wait for asynchronous tests to |
| /// finish. |
| /// |
| /// The VM won't shut down as long as there's an open receive port. |
| ReceivePort _receivePort; |
| |
| /// The name of the configuration. |
| /// |
| /// Subclasses can override this with something useful for diagnostics. It's |
| /// particularly useful for parent/child configurations such as layout tests. |
| final name = 'Configuration'; |
| |
| /// If true (the default), throw an exception once all tests have run if any failed. |
| bool throwOnTestFailures = true; |
| |
| /// If true (the default), then tests will stop after the first failed |
| /// [expect]. |
| /// |
| /// If false, failed [expect]s will not cause the test to stop. Other |
| /// exceptions will still terminate the test. |
| bool stopTestOnExpectFailure = true; |
| |
| // If [stopTestOnExpectFailure] is false, the list of failed [expect]s. |
| final _testLogBuffer = <Pair<String, StackTrace>>[]; |
| |
| /// The constructor sets up a failure handler for [expect] that redirects |
| /// [expect] failures to [onExpectFailure]. |
| SimpleConfiguration() : super.blank() { |
| configureExpectFailureHandler(new _ExpectFailureHandler(this)); |
| } |
| |
| void onInit() { |
| // For Dart internal tests, we don't want stack frame filtering. |
| // We turn it off here in the default config, but by default turn |
| // it back on in the vm and html configs. |
| filterStacks = false; |
| _receivePort = new ReceivePort(); |
| _postMessage('unittest-suite-wait-for-done'); |
| } |
| |
| /// Called when a test starts. |
| /// |
| /// Derived classes should call this first before their own override code. |
| void onTestStart(TestCase testCase) => _testLogBuffer.clear(); |
| |
| /// Called when a test completes. |
| /// |
| /// Derived classes should call this first before their own override code. |
| void onTestResult(TestCase externalTestCase) { |
| if (stopTestOnExpectFailure || _testLogBuffer.isEmpty) return; |
| |
| var testCase = externalTestCase as InternalTestCase; |
| |
| // Write the message/stack pairs up to the last pairs. |
| var reason = new StringBuffer(); |
| for (var reasonAndTrace in _testLogBuffer.take(_testLogBuffer.length - 1)) { |
| reason.write(reasonAndTrace.first); |
| reason.write('\n'); |
| reason.write(reasonAndTrace.last); |
| reason.write('\n'); |
| } |
| |
| var lastReasonAndTrace = _testLogBuffer.last; |
| // Write the last message. |
| reason.write(lastReasonAndTrace.first); |
| if (testCase.result == PASS) { |
| testCase.result = FAIL; |
| testCase.message = reason.toString(); |
| // Use the last stack as the overall failure stack. |
| testCase.stackTrace = lastReasonAndTrace.last; |
| } else { |
| // Add the last stack to the message; we have a further stack |
| // caused by some other failure. |
| reason.write(lastReasonAndTrace.last); |
| reason.write('\n'); |
| // Add the existing reason to the end of the expect log to |
| // create the final message. |
| testCase.message = '${reason.toString()}\n${testCase.message}'; |
| } |
| } |
| |
| /// Handles the logging of messages by a test case. |
| /// |
| /// The default in this base configuration is to call [print]. |
| void onLogMessage(TestCase testCase, String message) { |
| print(message); |
| } |
| |
| /// Handles failures from [expect]. |
| /// |
| /// If [stopTestOnExpectFailure] is true, this throws a [TestFailure]. |
| /// Otherwise, this stores the error. |
| void onExpectFailure(String reason) { |
| if (stopTestOnExpectFailure) throw new TestFailure(reason); |
| |
| try { |
| throw ''; |
| } catch (_, stack) { |
| var trace = getTrace(stack, formatStacks, filterStacks); |
| if (trace == null) trace = stack; |
| _testLogBuffer.add(new Pair<String, StackTrace>(reason, trace)); |
| } |
| } |
| |
| /// Returns a formatted string description of a test result. |
| String formatResult(TestCase testCase) { |
| var result = new StringBuffer(); |
| result.write(testCase.result.toUpperCase()); |
| result.write(": "); |
| result.write(testCase.description); |
| result.write("\n"); |
| |
| if (testCase.message != '') { |
| result.write(indent(testCase.message)); |
| result.write("\n"); |
| } |
| |
| if (testCase.stackTrace != null) { |
| result.write(indent(testCase.stackTrace.toString())); |
| result.write("\n"); |
| } |
| return result.toString(); |
| } |
| |
| /// Called with the result of all test cases. |
| /// |
| /// The default implementation prints the result summary using [print], |
| /// formatted with [formatResult]. Browser tests commonly override this to |
| /// reformat the output. |
| /// |
| /// When [uncaughtError] is not null, it contains an error that occured |
| /// outside of tests (e.g. setting up the test). |
| void onSummary(int passed, int failed, int errors, List<TestCase> results, |
| String uncaughtError) { |
| // Print each test's result. |
| for (var test in results) { |
| print(formatResult(test).trim()); |
| } |
| |
| // Show the summary. |
| print(''); |
| |
| if (passed == 0 && failed == 0 && errors == 0 && uncaughtError == null) { |
| print('No tests found.'); |
| // This is considered a failure too. |
| } else if (failed == 0 && errors == 0 && uncaughtError == null) { |
| print('All $passed tests passed.'); |
| } else { |
| if (uncaughtError != null) { |
| print('Top-level uncaught error: $uncaughtError'); |
| } |
| print('$passed PASSED, $failed FAILED, $errors ERRORS'); |
| } |
| } |
| |
| void onDone(bool success) { |
| if (success) { |
| _postMessage('unittest-suite-success'); |
| _receivePort.close(); |
| } else { |
| _receivePort.close(); |
| if (throwOnTestFailures) { |
| throw new Exception('Some tests failed.'); |
| } |
| } |
| } |
| |
| void _postMessage(String message) { |
| // In dart2js browser tests, the JavaScript-based test controller |
| // intercepts calls to print and listens for "secret" messages. |
| print(message); |
| } |
| } |