Add hierarchy utils and use them in search.

pkg/analysis_services/test/search/hierarchy_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.
+
+// This code was auto-generated, is not intended to be edited, and is subject to
+// significant change. Please see the README file for more information.
+
+library test.services.src.search.hierarchy;
+
+import 'dart:async';
+
+import 'package:analysis_services/index/index.dart';
+import 'package:analysis_services/index/local_memory_index.dart';
+import 'package:analysis_services/search/hierarchy.dart';
+import 'package:analysis_services/src/search/search_engine.dart';
+import 'package:analysis_testing/reflective_tests.dart';
+import 'package:analyzer/src/generated/element.dart';
+import 'package:unittest/unittest.dart';
+
+import '../index/abstract_single_unit.dart';
+
+
+main() {
+  groupSep = ' | ';
+  group('HierarchyTest', () {
+    runReflectiveTests(HierarchyTest);
+  });
+}
+
+
+@ReflectiveTestCase()
+class HierarchyTest extends AbstractSingleUnitTest {
+  Index index;
+  SearchEngineImpl searchEngine;
+
+  void setUp() {
+    super.setUp();
+    index = createLocalMemoryIndex();
+    searchEngine = new SearchEngineImpl(index);
+  }
+
+  void test_getDirectMembers() {
+    _indexTestUnit('''
+class A {
+  A() {}
+  var ma1;
+  ma2() {}
+}
+class B extends A {
+  B() {}
+  B.named() {}
+  var mb1;
+  mb2() {}
+}
+''');
+    {
+      ClassElement classA = findElement('A');
+      List<Element> members = getClassMembers(classA);
+      expect(members.map((e) => e.name), unorderedEquals(['ma1', 'ma2']));
+    }
+    {
+      ClassElement classB = findElement('B');
+      List<Element> members = getClassMembers(classB);
+      expect(members.map((e) => e.name), unorderedEquals(['mb1', 'mb2']));
+    }
+  }
+
+  Future test_getHierarchyMembers_constructors() {
+    _indexTestUnit('''
+class A {
+  A() {}
+}
+class B extends A {
+  B() {}
+}
+''');
+    ClassElement classA = findElement("A");
+    ClassElement classB = findElement("B");
+    ClassMemberElement memberA = classA.constructors[0];
+    ClassMemberElement memberB = classB.constructors[0];
+    var futureA = getHierarchyMembers(searchEngine, memberA).then((members) {
+      expect(members, unorderedEquals([memberA]));
+    });
+    var futureB = getHierarchyMembers(searchEngine, memberB).then((members) {
+      expect(members, unorderedEquals([memberB]));
+    });
+    return Future.wait([futureA, futureB]);
+  }
+
+  Future test_getHierarchyMembers_fields() {
+    _indexTestUnit('''
+class A {
+  int foo;
+}
+class B extends A {
+  get foo => null;
+}
+class C extends B {
+  set foo(x) {}
+}
+class D {
+  int foo;
+}
+''');
+    ClassElement classA = findElement("A");
+    ClassElement classB = findElement("B");
+    ClassElement classC = findElement("C");
+    ClassElement classD = findElement("D");
+    ClassElement classE = findElement("E");
+    ClassMemberElement memberA = classA.fields[0];
+    ClassMemberElement memberB = classB.fields[0];
+    ClassMemberElement memberC = classC.fields[0];
+    ClassMemberElement memberD = classD.fields[0];
+    var futureA = getHierarchyMembers(searchEngine, memberA).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberC]));
+    });
+    var futureB = getHierarchyMembers(searchEngine, memberB).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberC]));
+    });
+    var futureC = getHierarchyMembers(searchEngine, memberC).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberC]));
+    });
+    var futureD = getHierarchyMembers(searchEngine, memberD).then((members) {
+      expect(members, unorderedEquals([memberD]));
+    });
+    return Future.wait([futureA, futureB, futureC, futureD]);
+  }
+
+  Future test_getHierarchyMembers_methods() {
+    _indexTestUnit('''
+class A {
+  foo() {}
+}
+class B extends A {
+  foo() {}
+}
+class C extends B {
+  foo() {}
+}
+class D {
+  foo() {}
+}
+class E extends D {
+  foo() {}
+}
+''');
+    ClassElement classA = findElement("A");
+    ClassElement classB = findElement("B");
+    ClassElement classC = findElement("C");
+    ClassElement classD = findElement("D");
+    ClassElement classE = findElement("E");
+    ClassMemberElement memberA = classA.methods[0];
+    ClassMemberElement memberB = classB.methods[0];
+    ClassMemberElement memberC = classC.methods[0];
+    ClassMemberElement memberD = classD.methods[0];
+    ClassMemberElement memberE = classE.methods[0];
+    var futureA = getHierarchyMembers(searchEngine, memberA).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberC]));
+    });
+    var futureB = getHierarchyMembers(searchEngine, memberB).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberC]));
+    });
+    var futureC = getHierarchyMembers(searchEngine, memberC).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberC]));
+    });
+    var futureD = getHierarchyMembers(searchEngine, memberD).then((members) {
+      expect(members, unorderedEquals([memberD, memberE]));
+    });
+    var futureE = getHierarchyMembers(searchEngine, memberE).then((members) {
+      expect(members, unorderedEquals([memberD, memberE]));
+    });
+    return Future.wait([futureA, futureB, futureC, futureD, futureE]);
+  }
+
+  Future test_getHierarchyMembers_withInterfaces() {
+    _indexTestUnit('''
+class A {
+  foo() {}
+}
+class B implements A {
+  foo() {}
+}
+abstract class C implements A {
+}
+class D extends C {
+  foo() {}
+}
+class E {
+  foo() {}
+}
+''');
+    ClassElement classA = findElement("A");
+    ClassElement classB = findElement("B");
+    ClassElement classC = findElement("C");
+    ClassElement classD = findElement("D");
+    ClassElement classE = findElement("E");
+    ClassMemberElement memberA = classA.methods[0];
+    ClassMemberElement memberB = classB.methods[0];
+    ClassMemberElement memberD = classD.methods[0];
+    var futureA = getHierarchyMembers(searchEngine, memberA).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberD]));
+    });
+    var futureB = getHierarchyMembers(searchEngine, memberB).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberD]));
+    });
+    var futureD = getHierarchyMembers(searchEngine, memberD).then((members) {
+      expect(members, unorderedEquals([memberA, memberB, memberD]));
+    });
+    return Future.wait([futureA, futureB, futureD]);
+  }
+
+  Future test_getSubClasses() {
+    _indexTestUnit('''
+class A {}
+class B extends A {}
+class C extends B {}
+class D extends B implements A {}
+class M {}
+class E extends A with M {}
+''');
+    ClassElement classA = findElement("A");
+    ClassElement classB = findElement("B");
+    ClassElement classC = findElement("C");
+    ClassElement classD = findElement("D");
+    ClassElement classM = findElement("M");
+    ClassElement classE = findElement("E");
+    var futureA = getSubClasses(searchEngine, classA).then((subs) {
+      expect(subs, unorderedEquals([classB, classC, classD, classE]));
+    });
+    var futureB = getSubClasses(searchEngine, classB).then((subs) {
+      expect(subs, unorderedEquals([classC, classD]));
+    });
+    var futureC = getSubClasses(searchEngine, classC).then((subs) {
+      expect(subs, isEmpty);
+    });
+    var futureM = getSubClasses(searchEngine, classM).then((subs) {
+      expect(subs, unorderedEquals([classE]));
+    });
+    return Future.wait([futureA, futureB, futureC, futureM]);
+  }
+
+  void test_getSuperClasses() {
+    _indexTestUnit('''
+class A {}
+class B extends A {}
+class C extends B {}
+class D extends B implements A {}
+class M {}
+class E extends A with M {}
+class F implements A {}
+''');
+    ClassElement classA = findElement("A");
+    ClassElement classB = findElement("B");
+    ClassElement classC = findElement("C");
+    ClassElement classD = findElement("D");
+    ClassElement classE = findElement("E");
+    ClassElement classF = findElement("F");
+    ClassElement objectElement = classA.supertype.element;
+    // Object
+    {
+      Set<ClassElement> supers = getSuperClasses(objectElement);
+      expect(supers, isEmpty);
+    }
+    // A
+    {
+      Set<ClassElement> supers = getSuperClasses(classA);
+      expect(supers, unorderedEquals([objectElement]));
+    }
+    // B
+    {
+      Set<ClassElement> supers = getSuperClasses(classB);
+      expect(supers, unorderedEquals([objectElement, classA]));
+    }
+    // C
+    {
+      Set<ClassElement> supers = getSuperClasses(classC);
+      expect(supers, unorderedEquals([objectElement, classA, classB]));
+    }
+    // D
+    {
+      Set<ClassElement> supers = getSuperClasses(classD);
+      expect(supers, unorderedEquals([objectElement, classA, classB]));
+    }
+    // E
+    {
+      Set<ClassElement> supers = getSuperClasses(classE);
+      expect(supers, unorderedEquals([objectElement, classA]));
+    }
+    // F
+    {
+      Set<ClassElement> supers = getSuperClasses(classF);
+      expect(supers, unorderedEquals([objectElement, classA]));
+    }
+  }
+
+  void _indexTestUnit(String code) {
+    resolveTestUnit(code);
+    index.indexUnit(context, testUnit);
+  }
+}