Tweaks for MockSdk and test ContextBuilder.findSdk() and dart:html.

pkg/analyzer/test/src/context/builder_test.dart

Index: pkg/analyzer/test/src/context/builder_test.dart
diff --git a/pkg/analyzer/test/src/context/builder_test.dart b/pkg/analyzer/test/src/context/builder_test.dart
index b63b83d1ca82fcaf5a268b4cbaa4a8a806ee44de..32c8937a6b88b3a186af538a61d148506486e053 100644
--- a/pkg/analyzer/test/src/context/builder_test.dart
+++ b/pkg/analyzer/test/src/context/builder_test.dart
@@ -96,7 +96,7 @@ const Map<String, LibraryInfo> libraries = const {
     resourceProvider = new MemoryResourceProvider();
     pathContext = resourceProvider.pathContext;
     new MockSdk(resourceProvider: resourceProvider);
-    sdkManager = new DartSdkManager('/', false, (_) {
+    sdkManager = new DartSdkManager('/sdk', false, (_) {
       fail('Should not be used to create an SDK');
     });
     contentCache = new ContentCache();
@@ -484,6 +484,29 @@ b:${pathContext.toUri(packageB)}
     expect(sdk, isNotNull);
   }
 
+  void test_findSdk_noPackageMap_html_spec() {
+    DartSdk sdk = builder.findSdk(null, new AnalysisOptionsImpl());
+    expect(sdk, isNotNull);
+    Source htmlSource = sdk.mapDartUri('dart:html');
+    expect(
+        htmlSource.fullName,
+        resourceProvider
+            .convertPath('/sdk/lib/html/dartium/html_dartium.dart'));
+    expect(htmlSource.exists(), isTrue);
+  }
+
+  void test_findSdk_noPackageMap_html_strong() {
+    DartSdk sdk =
+        builder.findSdk(null, new AnalysisOptionsImpl()..strongMode = true);
+    expect(sdk, isNotNull);
+    Source htmlSource = sdk.mapDartUri('dart:html');
+    expect(
+        htmlSource.fullName,
+        resourceProvider
+            .convertPath('/sdk/lib/html/dart2js/html_dart2js.dart'));
+    expect(htmlSource.exists(), isTrue);
+  }
+
   void test_getAnalysisOptions_default_noOverrides() {
     AnalysisOptionsImpl defaultOptions = new AnalysisOptionsImpl();
     defaultOptions.enableGenericMethods = true;