Revert "unittest step 3 and 4: remove TestFramework.dart, make test.dart use"

tests/isolate/src/TestFramework.dart

+// Copyright (c) 2011, 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("TestFramework");
+#import("dart:coreimpl");
+#import("dart:isolate");
+
+
+typedef void AsynchronousTestFunction(TestExpectation check);
+
+
+void runTests(List tests, [bool guarded = true]) {
+  TestRunner runner = new TestRunner(new TestSuite(tests), guarded);
+  TestResult result = new TestResult(runner);
+  runner.run(result);
+}
+
+
+class TestSuite {
+
+  TestSuite([List tests = const []]) : testCases = <TestCase>[] {
+    for (var test in tests) {
+      addTest(test);
+    }
+  }
+
+  void addTest(var test) {
+    if (test is Function) {
+      addAsynchronousTestCase(test);
+    } else {
+      test.addToTestSuite(this);
+    }
+  }
+
+  void addTestCase(TestCase test) {
+    testCases.add(test);
+  }
+
+  void addAsynchronousTestCase(AsynchronousTestFunction test) {
+    addTestCase(new AsynchronousTestCase(test));
+  }
+
+  void run(TestResult result) {
+    for (TestCase test in testCases) {
+      test.run(result);
+    }
+  }
+
+  final List<TestCase> testCases;
+
+}
+
+
+class TestCase {
+
+  TestCase();
+
+  void setUp() { }
+  abstract void performTest();
+  void tearDown() { }
+
+  void run(TestResult result) {
+    setUp();
+    result.runGuarded(this, () {
+      performTest();
+      tearDown();
+    });
+  }
+
+  void addToTestSuite(TestSuite suite) {
+    suite.addTestCase(this);
+  }
+}
+
+
+class TestResult {
+
+  TestResult(this.runner) : errors = [], failures = [];
+
+  void error(String message, TestCase testCase) {
+    errors.add([message, testCase]);
+  }
+
+  void failure(String message, TestCase testCase) {
+    failures.add([message, testCase]);
+  }
+
+  runGuarded(TestCase testCase, Function fn) {
+    if (!runner.guarded) {
+      return fn();
+    }
+    var result = null;
+    try {
+      result = fn();
+    } catch (ExpectException exception) {
+      failure(exception.toString(), testCase);
+      testCase.tearDown();
+    } catch (var exception) {
+      error(exception.toString(), testCase);
+      testCase.tearDown();
+    }
+    return result;
+  }
+
+  bool hasDefects() {
+    return !(errors.isEmpty() && failures.isEmpty());
+  }
+
+  final TestRunner runner;
+  final List errors;
+  final List failures;
+
+}
+
+
+class TestRunner {
+
+  TestRunner(this.suite, this.guarded);
+
+  void run(TestResult result) {
+    if (waitForDoneCallback !== null) {
+      waitForDoneCallback();
+    }
+    suite.run(result);
+    if (AsynchronousTestCase.running == 0) {
+      done(result);
+    }
+  }
+
+  void done(TestResult result) {
+    if (result.hasDefects()) {
+      printDefects(result);
+      Expect.fail("Test suite failed.");
+    }
+    if (doneCallback !== null) {
+      doneCallback();
+    }
+  }
+
+  void printDefects(TestResult result) {
+    printDefectList("Errors", result.errors);
+    printDefectList("Failures", result.failures);
+  }
+
+  static void printDefectList(String type, List defects) {
+    if (!defects.isEmpty()) {
+      print("$type #${defects.length}:");
+      for (List defect in defects) {
+        print(" - ${defect[0]}");
+      }
+    }
+  }
+
+  final TestSuite suite;
+  final bool guarded;
+  static Function waitForDoneCallback;
+  static Function doneCallback;
+
+}
+
+
+class TestExpectation {
+
+  TestExpectation(this.testCase, this.result);
+
+  void succeeded() {
+    Expect.equals(0, pendingCallbacks);
+    hasSucceeded = true;
+    testCase.tearDown();
+  }
+
+  void failed() {
+    testCase.tearDown();
+  }
+
+  Future completes(Future future) {
+    Completer completer = new Completer();
+    future.then(runs1((value) {
+      completer.complete(value);
+    }));
+    return completer.future;
+  }
+
+  Function runs0(Function fn) {
+    bool ran = false;  // We only check that the function is executed once.
+    pendingCallbacks++;
+    return () {
+      if (!ran) pendingCallbacks--;
+      ran = true;
+      return result.runGuarded(testCase, () => fn());
+    };
+  }
+
+  Function runs1(Function fn) {
+    bool ran = false;  // We only check that the function is executed once.
+    pendingCallbacks++;
+    return (a0) {
+      if (!ran) pendingCallbacks--;
+      ran = true;
+      return result.runGuarded(testCase, () => fn(a0));
+    };
+  }
+
+  Function runs2(Function fn) {
+    bool ran = false;  // We only check that the function is executed once.
+    pendingCallbacks++;
+    return (a0, a1) {
+      if (!ran) pendingCallbacks--;
+      ran = true;
+      return result.runGuarded(testCase, () => fn(a0, a1));
+    };
+  }
+
+  bool hasPendingCallbacks() {
+    return pendingCallbacks > 0;
+  }
+
+  final AsynchronousTestCase testCase;
+  final TestResult result;
+
+  int pendingCallbacks = 0;
+  bool hasSucceeded = false;
+
+}
+
+
+class AsynchronousTestCase extends TestCase {
+
+  AsynchronousTestCase(this.test) : super();
+
+  void run(TestResult result) {
+    setUp();
+    result.runGuarded(this, () {
+      addRunning(result);
+      TestExpectation expect = new TestExpectation(this, result);
+      test(expect);
+      if (!expect.hasPendingCallbacks()) {
+        Expect.isTrue(expect.hasSucceeded);
+        tearDown();
+      }
+    });
+  }
+
+  void tearDown() {
+    removeRunning();
+  }
+
+  void addRunning(TestResult result) {
+    if (running++ == 0) {
+      final port = new ReceivePort();
+      port.receive((message, replyTo) {
+        port.close();
+        result.runner.done(result);
+      });
+      keepalive = port;
+    }
+  }
+
+  void removeRunning() {
+    if (--running == 0) {
+      keepalive.toSendPort().send(null, null);
+      keepalive = null;
+    }
+  }
+
+  // AsynchronousTestCase.run() calls variable test, not function performTest.
+  void performTest() {
+    Expect.fail('performTest called in AsynchronousTestCase');
+  }
+
+  AsynchronousTestFunction test;
+
+  static int running = 0;
+  static ReceivePort keepalive = null;
+
+}