Merge pull request #1178 from eseidelGoogle/enum_index

Fix enums to use the correct index value in documentation

Author: keertip

lib/src/model.dart

@@ -695,8 +695,9 @@ class Enum extends Class {
   List<EnumField> get constants {
     if (_constants != null) return _constants;
 
-    // is there a better way to get the index during a map() ?
-    var index = 0;
+    // This is a hack to give 'values' an index of -1 and all other fields
+    // their expected indicies. https://github.com/dart-lang/dartdoc/issues/1176
+    var index = -1;
 
     _constants = _cls.fields
         .where(isPublic)

test/model_test.dart

@@ -733,7 +733,16 @@ void main() {
       var dog = animal.constants.firstWhere((f) => f.name == 'DOG');
       expect(dog.linkedName, equals('DOG'));
       expect(dog.isConst, isTrue);
-      expect(dog.constantValue, equals('const Animal(2)'));
+      expect(dog.constantValue, equals('const Animal(1)'));
+    });
+
+    test('constants have correct indicies', () {
+      String valueByName(var name) {
+        return animal.constants.firstWhere((f) => f.name == name).constantValue;
+      }
+      expect(valueByName('CAT'), equals('const Animal(0)'));
+      expect(valueByName('DOG'), equals('const Animal(1)'));
+      expect(valueByName('HORSE'), equals('const Animal(2)'));
     });
 
     test('has a single `index` property', () {