Extract testing utilities into a separate package.

pkg/analysis_server/test/reflective_tests.dart

-// Copyright (c) 2014, 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 reflective.tests;
-
-import 'dart:async';
-
-@MirrorsUsed(metaTargets: 'ReflectiveTestCase')
-import 'dart:mirrors';
-
-import 'package:unittest/unittest.dart';
-
-
-/**
- * A marker annotation used to instruct dart2js to keep reflection information
- * for the annotated classes.
- */
-class ReflectiveTestCase {
-  const ReflectiveTestCase();
-}
-
-
-/**
- * Runs test methods existing in the given [type].
- *
- * Methods with names starting with `test` are run using [test] function.
- * Methods with names starting with `solo_test` are run using [solo_test] function.
- *
- * Each method is run with a new instance of [type].
- * So, [type] should have a default constructor.
- *
- * If [type] declares method `setUp`, it methods will be invoked before any test
- * method invocation.
- *
- * If [type] declares method `tearDown`, it will be invoked after any test
- * method invocation. If method returns [Future] to test some asyncronous
- * behavior, then `tearDown` will be invoked in `Future.complete`.
- */
-void runReflectiveTests(Type type) {
-  ClassMirror classMirror = reflectClass(type);
-  classMirror.instanceMembers.forEach((symbol, memberMirror) {
-    // we need only methods
-    if (memberMirror is! MethodMirror || !memberMirror.isRegularMethod) {
-      return;
-    }
-    String memberName = MirrorSystem.getName(symbol);
-    // test_
-    if (memberName.startsWith('test_')) {
-      String testName = memberName.substring('test_'.length);
-      test(testName, () {
-        return _runTest(classMirror, symbol);
-      });
-      return;
-    }
-    // solo_test_
-    if (memberName.startsWith('solo_test_')) {
-      String testName = memberName.substring('solo_test_'.length);
-      solo_test(testName, () {
-        return _runTest(classMirror, symbol);
-      });
-    }
-  });
-}
-
-
-_runTest(ClassMirror classMirror, Symbol symbol) {
-  InstanceMirror instanceMirror = classMirror.newInstance(new Symbol(''), []);
-  bool shouldRunTearDown = true;
-  _invokeSymbolIfExists(instanceMirror, #setUp);
-  try {
-    var testReturn = instanceMirror.invoke(symbol, []).reflectee;
-    if (testReturn is Future) {
-      shouldRunTearDown = false;
-      return testReturn.whenComplete(() {
-        _invokeTearDown(instanceMirror);
-      });
-    } else {
-      return testReturn;
-    }
-  } finally {
-    if (shouldRunTearDown) {
-      _invokeTearDown(instanceMirror);
-    }
-  }
-}
-
-
-void _invokeTearDown(InstanceMirror instanceMirror) {
-  _invokeSymbolIfExists(instanceMirror, #tearDown);
-}
-
-
-void _invokeSymbolIfExists(InstanceMirror instanceMirror, Symbol symbol) {
-  try {
-    instanceMirror.invoke(symbol, []);
-  } on NoSuchMethodError catch (e) {
-  }
-}