Extract testing utilities into a separate package.

pkg/analysis_testing/lib/mocks.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 testing.mocks;
+
+import 'package:analyzer/src/generated/element.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:typed_mock/typed_mock.dart';
+
+
+class MockAnalysisContext extends StringTypedMock implements AnalysisContext {
+  MockAnalysisContext(String name) : super(name);
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockCompilationUnitElement extends TypedMock implements
+    CompilationUnitElement {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockElement extends StringTypedMock implements Element {
+  MockElement([String name = '<element>']) : super(name);
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockHtmlElement extends TypedMock implements HtmlElement {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockLibraryElement extends TypedMock implements LibraryElement {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockLogger extends TypedMock implements Logger {
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class MockSource extends StringTypedMock implements Source {
+  MockSource([String name = 'mocked.dart']) : super(name);
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
+
+class StringTypedMock extends TypedMock {
+  String _toString;
+
+  StringTypedMock(this._toString);
+
+  @override
+  String toString() {
+    if (_toString != null) {
+      return _toString;
+    }
+    return super.toString();
+  }
+}