Roll Observatory packages and add a roll script

packages/quiver/test/mirrors_test.dart

+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+library quiver.mirrors_test;
+
+import 'dart:collection';
+import 'dart:mirrors';
+
+import 'package:quiver/mirrors.dart';
+import 'package:test/test.dart';
+
+main() {
+  group('getTypeName', () {
+    test('should return the qualified name for a type', () {
+      expect(getTypeName(Object), const Symbol('dart.core.Object'));
+      expect(getTypeName(Foo), const Symbol('quiver.mirrors_test.Foo'));
+    });
+  });
+
+  group('implements', () {
+    test('should return true if an object implements an interface', () {
+      var foo = new Foo();
+      expect(implements(foo, Object), true);
+      expect(implements(foo, Foo), true);
+      expect(implements(foo, Comparable), true);
+      expect(implements(foo, Iterable), true);
+    });
+
+    test("should return false if an object doesn't implement an interface", () {
+      var foo = new Foo();
+      expect(implements(foo, String), false);
+      expect(implements(foo, num), false);
+    });
+  });
+
+  group('classImplements', () {
+    test('should return true if an class implements an interface', () {
+      var foo = new Foo();
+      var mirror = reflect(foo).type;
+      expect(classImplements(mirror, reflectClass(Object)), true);
+      expect(classImplements(mirror, reflectClass(Foo)), true);
+      expect(classImplements(mirror, reflectClass(Comparable)), true);
+      expect(classImplements(mirror, reflectClass(Iterable)), true);
+    });
+
+    test("should return false if an object doesn't implement an interface", () {
+      var foo = new Foo();
+      var mirror = reflect(foo).type;
+      expect(classImplements(mirror, reflectClass(String)), false);
+      expect(classImplements(mirror, reflectClass(num)), false);
+    });
+  });
+
+  group('getMemberMirror', () {
+    test('should return a member of a class', () {
+      var mirror = reflect(new Foo()).type;
+      expect(getDeclaration(mirror, const Symbol('toString')),
+          new isInstanceOf<MethodMirror>());
+      expect(getDeclaration(mirror, const Symbol('a')),
+          new isInstanceOf<VariableMirror>());
+    });
+  });
+
+  group('Method', () {
+    test('should be callable', () {
+      var i = 2;
+      var mirror = reflect(i);
+      var method = new Method(mirror, const Symbol('+'));
+      expect(method(3), 5);
+    });
+
+    test('should be callable with named arguments', () {
+      // this test will fail when named argument support is added
+      var i = [1, 2];
+      var mirror = reflect(i);
+      var method = new Method(mirror, const Symbol('toList'));
+      expect(method(growable: false), [1, 2]);
+    });
+  });
+}
+
+class Foo extends IterableBase implements Comparable {
+  String a;
+  get iterator => null;
+  int compareTo(o) => 0;
+}