TBR Revert "Remove MemberMap in favor of HashMap"

pkg/analyzer/test/generated/resolver_test.dart

Index: pkg/analyzer/test/generated/resolver_test.dart
diff --git a/pkg/analyzer/test/generated/resolver_test.dart b/pkg/analyzer/test/generated/resolver_test.dart
index fd39ad541267b59657164b94ad9ed2164960216c..4fe65162bea5621db6e60252c6751af51a5c7c73 100644
--- a/pkg/analyzer/test/generated/resolver_test.dart
+++ b/pkg/analyzer/test/generated/resolver_test.dart
@@ -42,6 +42,7 @@ main() {
   runReflectiveTests(ErrorResolverTest);
   runReflectiveTests(LibraryImportScopeTest);
   runReflectiveTests(LibraryScopeTest);
+  runReflectiveTests(MemberMapTest);
   runReflectiveTests(ScopeTest);
   runReflectiveTests(StrictModeTest);
   runReflectiveTests(SubtypeManagerTest);
@@ -535,6 +536,52 @@ class LibraryScopeTest extends ResolverTestCase {
   }
 }
 
+@reflectiveTest
+class MemberMapTest {
+  /**
+   * The null type.
+   */
+  InterfaceType _nullType;
+
+  void setUp() {
+    _nullType = new TestTypeProvider().nullType;
+  }
+
+  void test_MemberMap_copyConstructor() {
+    MethodElement m1 = ElementFactory.methodElement("m1", _nullType);
+    MethodElement m2 = ElementFactory.methodElement("m2", _nullType);
+    MethodElement m3 = ElementFactory.methodElement("m3", _nullType);
+    MemberMap map = new MemberMap();
+    map.put(m1.name, m1);
+    map.put(m2.name, m2);
+    map.put(m3.name, m3);
+    MemberMap copy = new MemberMap.from(map);
+    expect(copy.size, map.size);
+    expect(copy.get(m1.name), m1);
+    expect(copy.get(m2.name), m2);
+    expect(copy.get(m3.name), m3);
+  }
+
+  void test_MemberMap_override() {
+    MethodElement m1 = ElementFactory.methodElement("m", _nullType);
+    MethodElement m2 = ElementFactory.methodElement("m", _nullType);
+    MemberMap map = new MemberMap();
+    map.put(m1.name, m1);
+    map.put(m2.name, m2);
+    expect(map.size, 1);
+    expect(map.get("m"), m2);
+  }
+
+  void test_MemberMap_put() {
+    MethodElement m1 = ElementFactory.methodElement("m1", _nullType);
+    MemberMap map = new MemberMap();
+    expect(map.size, 0);
+    map.put(m1.name, m1);
+    expect(map.size, 1);
+    expect(map.get("m1"), m1);
+  }
+}
+
 class Scope_EnclosedScopeTest_test_define_duplicate extends Scope {
   GatheringErrorListener listener;