Convert subclasses of Enum

pkg/analyzer/test/enum_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 analyzer.test.enum_test;
-
-import 'dart:mirrors';
-
-import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/error/error.dart';
-import 'package:analyzer/src/dart/element/element.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/java_core.dart';
-import 'package:analyzer/src/generated/resolver.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/generated/utilities_dart.dart';
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-import 'package:unittest/unittest.dart';
-
-import 'utils.dart';
-
-void main() {
-  initializeTestEnvironment();
-  defineReflectiveTests(EnumTest);
-}
-
-@reflectiveTest
-class EnumTest {
-  void test_AnalysisLevel() {
-    new EnumTester<AnalysisLevel>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_CacheState() {
-    new EnumTester<CacheState>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_ElementKind() {
-    new EnumTester<ElementKind>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_ErrorProperty() {
-    new EnumTester<ErrorProperty>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_ErrorSeverity() {
-    new EnumTester<ErrorSeverity>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_ErrorType() {
-    new EnumTester<ErrorType>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_INIT_STATE() {
-    new EnumTester<INIT_STATE>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_Modifier() {
-    new EnumTester<Modifier>(
-        ignoreGetters: ["persistedValues", "transientValues"])
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_ParameterKind() {
-    new EnumTester<ParameterKind>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_RedirectingConstructorKind() {
-    new EnumTester<RedirectingConstructorKind>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_SourceKind() {
-    new EnumTester<SourceKind>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-
-  void test_UriKind() {
-    new EnumTester<UriKind>()
-      ..check_getters()
-      ..check_explicit_values();
-  }
-}
-
-/**
- * Helper class for testing invariants of enumerated types.
- */
-class EnumTester<C extends Enum> {
-  /**
-   * Set of getter names which should be ignored when looking for getters
-   * representing enum values.
-   */
-  Set<String> _ignoreGetters = new Set<String>();
-
-  EnumTester({List<String> ignoreGetters}) {
-    // Always ignore a getter called "values".
-    _ignoreGetters.add('values');
-
-    if (ignoreGetters != null) {
-      for (String getterName in ignoreGetters) {
-        _ignoreGetters.add(getterName);
-      }
-    }
-  }
-
-  /**
-   * Get a map from getter name to the value returned by the getter, for all
-   * static getters in [C] whose name isn't in [_ignoreGetters].
-   */
-  Map<String, C> get _getters {
-    Map<String, C> result = <String, C>{};
-    ClassMirror reflectedClass = reflectClass(C);
-    reflectedClass.staticMembers.forEach((Symbol symbol, MethodMirror method) {
-      if (!method.isGetter) {
-        return;
-      }
-      String name = MirrorSystem.getName(symbol);
-      if (_ignoreGetters.contains(name)) {
-        return;
-      }
-      C value = reflectedClass.getField(symbol).reflectee as C;
-      result[name] = value;
-    });
-    return result;
-  }
-
-  /**
-   * Check invariants on the list of enum values accessible via the static
-   * getter "values".
-   */
-  void check_explicit_values() {
-    ClassMirror reflectedClass = reflectClass(C);
-    List<C> values = reflectedClass.getField(#values).reflectee as List<C>;
-    Map<C, int> reverseMap = <C, int>{};
-
-    // Check that "values" is a list of values of type C, with no duplicates.
-    expect(values, isList);
-    for (int i = 0; i < values.length; i++) {
-      C value = values[i];
-      expect(value, new isInstanceOf<C>(), reason: 'values[$i]');
-      if (reverseMap.containsKey(value)) {
-        fail('values[$i] and values[${reverseMap[value]}] both equal $value');
-      }
-      reverseMap[value] = i;
-    }
-
-    // Check that the set of values in the "values" list matches the set of
-    // values accessible via static fields.
-    expect(reverseMap.keys.toSet(), equals(_getters.values.toSet()));
-
-    // Make sure the order of the list matches the ordinal numbers.
-    for (int i = 0; i < values.length; i++) {
-      expect(values[i].ordinal, equals(i), reason: 'values[$i].ordinal');
-    }
-  }
-
-  /**
-   * Check invariants on the set of enum values accessible via the static
-   * getters defined in the class [C] (with the exception of a getter called
-   * "values").
-   */
-  void check_getters() {
-    Map<int, String> ordinals = <int, String>{};
-    int numValues = 0;
-
-    _getters.forEach((String name, C value) {
-      String reason = 'getter: $name';
-      ++numValues;
-
-      // Check the type of the value
-      expect(value, new isInstanceOf<C>(), reason: reason);
-
-      // Check that the name of the getter matches the name stored in the enum.
-      expect(value.name, equals(name), reason: reason);
-
-      // Check that there are no duplicate ordinals.
-      if (ordinals.containsKey(value.ordinal)) {
-        fail(
-            'Getters $name and ${ordinals[value.ordinal]} have ordinal value ${value.ordinal}');
-      }
-      ordinals[value.ordinal] = name;
-    });
-
-    // Check that the set of ordinals runs from 0 to N-1, where N is the number
-    // of enumerated values.
-    Set<int> expectedOrdinals = new Set<int>();
-    for (int i = 0; i < numValues; i++) {
-      expectedOrdinals.add(i);
-    }
-    expect(ordinals.keys.toSet(), equals(expectedOrdinals));
-  }
-}