Add an integration test for analysis.overrides.

pkg/analysis_server/test/integration/analysis/overrides_test.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 test.integration.analysis.overrides;
+
+import 'package:analysis_testing/reflective_tests.dart';
+import 'package:unittest/unittest.dart';
+
+import '../integration_tests.dart';
+
+@ReflectiveTestCase()
+class Test extends AbstractAnalysisServerIntegrationTest {
+  test_overrides() {
+    String pathname = sourcePath('test.dart');
+    String text =
+        r'''
+abstract class Interface1 {
+  method0();
+  method1();
+  method2();
+  method3();
+}
+
+abstract class Interface2 {
+  method0();
+  method1();
+  method4();
+  method5();
+}
+
+abstract class Base {
+  method0();
+  method2();
+  method4();
+  method6();
+}
+
+class Target extends Base implements Interface1, Interface2 {
+  method0() {}
+  method1() {}
+  method2() {}
+  method3() {}
+  method4() {}
+  method5() {}
+  method6() {}
+  method7() {}
+}
+''';
+    writeFile(pathname, text);
+    standardAnalysisSetup();
+    sendAnalysisSetSubscriptions({
+      'OVERRIDES': [pathname]
+    });
+    List overrides;
+    onAnalysisOverrides.listen((params) {
+      expect(params['file'], equals(pathname));
+      overrides = params['overrides'];
+    });
+    return analysisFinished.then((_) {
+      int targetOffset = text.indexOf('Target');
+      Map findOverride(String methodName) {
+        int methodOffset = text.indexOf(methodName, targetOffset);
+        for (Map override in overrides) {
+          if (override['offset'] == methodOffset) {
+            return override;
+          }
+        }
+        return null;
+      }
+      void checkOverrides(String methodName, bool
+          expectedOverridesBase, List<String> expectedOverridesInterfaces) {
+        Map override = findOverride(methodName);
+        if (!expectedOverridesBase && expectedOverridesInterfaces.isEmpty) {
+          // This method overrides nothing, so it should not appear in the
+          // overrides list.
+          expect(override, isNull);
+          return;
+        } else {
+          expect(override, isNotNull);
+        }
+        expect(override['length'], equals(methodName.length));
+        Map superclassMember = override['superclassMember'];
+        if (expectedOverridesBase) {
+          expect(superclassMember['element']['name'], equals(methodName));
+          expect(superclassMember['className'], equals('Base'));
+        } else {
+          expect(superclassMember, isNull);
+        }
+        List interfaceMembers = override['interfaceMembers'];
+        if (expectedOverridesInterfaces.isNotEmpty) {
+          expect(interfaceMembers, isNotNull);
+          Set<String> actualOverridesInterfaces = new Set<String>();
+          for (Map overriddenMember in interfaceMembers) {
+            expect(overriddenMember['element']['name'], equals(methodName));
+            String className = overriddenMember['className'];
+            bool wasAdded = actualOverridesInterfaces.add(className);
+            expect(wasAdded, isTrue);
+          }
+          expect(actualOverridesInterfaces, equals(
+              expectedOverridesInterfaces.toSet()));
+        } else {
+          expect(interfaceMembers, isNull);
+        }
+      }
+      checkOverrides('method0', true, ['Interface1', 'Interface2']);
+      checkOverrides('method1', false, ['Interface1', 'Interface2']);
+      checkOverrides('method2', true, ['Interface1']);
+      checkOverrides('method3', false, ['Interface1']);
+      checkOverrides('method4', true, ['Interface2']);
+      checkOverrides('method5', false, ['Interface2']);
+      checkOverrides('method6', true, []);
+      checkOverrides('method7', false, []);
+    });
+  }
+}
+
+main() {
+  runReflectiveTests(Test);
+}