Extract EmbedderRelatedTest to a utility file

pkg/analyzer/test/embedder_tests.dart

+// Copyright (c) 2016, 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 analyzer.test.embedder_tests;
+
+import 'dart:core' hide Resource;
+
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:path/path.dart' as path;
+
+import 'resource_utils.dart';
+import 'utils.dart';
+
+abstract class EmbedderRelatedTest {
+  TestPathTranslator pathTranslator;
+  ResourceProvider resourceProvider;
+
+  buildResourceProvider() {
+    MemoryResourceProvider rawProvider =
+        new MemoryResourceProvider(isWindows: isWindows);
+    resourceProvider = new TestResourceProvider(rawProvider);
+    pathTranslator = new TestPathTranslator(rawProvider)
+      ..newFolder('/empty')
+      ..newFolder('/tmp')
+      ..newFile(
+          '/tmp/_embedder.yaml',
+          r'''
+embedded_libs:
+  "dart:core" : "core.dart"
+  "dart:fox": "slippy.dart"
+  "dart:bear": "grizzly.dart"
+  "dart:relative": "../relative.dart"
+  "dart:deep": "deep/directory/file.dart"
+  "fart:loudly": "nomatter.dart"
+''');
+  }
+
+  clearResourceProvider() {
+    resourceProvider = null;
+    pathTranslator = null;
+  }
+
+  void setUp() {
+    initializeTestEnvironment(path.context);
+    buildResourceProvider();
+  }
+
+  void tearDown() {
+    initializeTestEnvironment();
+    clearResourceProvider();
+  }
+}