Create summary files in MockSdk classes

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

Index: pkg/analyzer/test/src/context/mock_sdk.dart
diff --git a/pkg/analyzer/test/src/context/mock_sdk.dart b/pkg/analyzer/test/src/context/mock_sdk.dart
index 464dec037785d7894801e1dc3a182316d2a20489..3d5ee7d9753f036d01cd155576de37fdcc275b73 100644
--- a/pkg/analyzer/test/src/context/mock_sdk.dart
+++ b/pkg/analyzer/test/src/context/mock_sdk.dart
@@ -351,7 +351,9 @@ class MockSdk implements DartSdk {
   PackageBundle _bundle;
 
   MockSdk(
-      {bool dartAsync: true, resource.MemoryResourceProvider resourceProvider})
+      {bool buildSummaries: true,
+      bool dartAsync: true,
+      resource.MemoryResourceProvider resourceProvider})
       : provider = resourceProvider ?? new resource.MemoryResourceProvider(),
         sdkLibraries = dartAsync ? _LIBRARIES : [_LIB_CORE],
         uriMap = dartAsync ? FULL_URI_MAP : NO_ASYNC_URI_MAP {
@@ -365,6 +367,13 @@ class MockSdk implements DartSdk {
         provider.convertPath(
             '$sdkRoot/lib/_internal/sdk_library_metadata/lib/libraries.dart'),
         librariesContent);
+    if (buildSummaries) {
+      List<int> bytes = _computeLinkedBundleBytes();
+      provider.newFileWithBytes(
+          provider.convertPath('/lib/_internal/spec.sum'), bytes);
+      provider.newFileWithBytes(
+          provider.convertPath('/lib/_internal/strong.sum'), bytes);
+    }
   }
 
   @override
@@ -422,13 +431,7 @@ class MockSdk implements DartSdk {
   @override
   PackageBundle getLinkedBundle() {
     if (_bundle == null) {
-      List<Source> librarySources = sdkLibraries
-          .map((SdkLibrary library) => mapDartUri(library.shortName))
-          .toList();
-      List<int> bytes = new SummaryBuilder(
-              librarySources, context, context.analysisOptions.strongMode)
-          .build();
-      _bundle = new PackageBundle.fromBuffer(bytes);
+      _bundle = new PackageBundle.fromBuffer(_computeLinkedBundleBytes());
     }
     return _bundle;
   }
@@ -467,6 +470,18 @@ class MockSdk implements DartSdk {
     String newContent = updateContent(content);
     provider.updateFile(path, newContent);
   }
+
+  /**
+   * Compute the bytes in the linked bundle associated with this SDK.

[scheglov, 2016/12/02 01:15:52]

"in the" -> "of the"?

[Brian Wilkerson, 2016/12/02 15:32:04]

Done

+   */
+  List<int> _computeLinkedBundleBytes() {
+    List<Source> librarySources = sdkLibraries
+        .map((SdkLibrary library) => mapDartUri(library.shortName))
+        .toList();
+    return new SummaryBuilder(
+            librarySources, context, context.analysisOptions.strongMode)
+        .build();
+  }
 }
 
 class _MockSdkLibrary implements SdkLibrary {