Add mirrors tests

test/codegen/lib/mirrors/generics_substitution_test.dart

+// Copyright (c) 2013, 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.generics_substitution;
+
+import 'dart:mirrors';
+import 'package:expect/expect.dart';
+
+class SuperGeneric<R, S> {
+  R r;
+  s(S s) {}
+}
+
+class Generic<T> extends SuperGeneric<T, int> {
+  T t() {}
+}
+
+main() {
+  ClassMirror genericDecl = reflectClass(Generic);
+  ClassMirror genericOfString = reflect(new Generic<String>()).type;
+  ClassMirror superGenericDecl = reflectClass(SuperGeneric);
+  ClassMirror superOfTAndInt = genericDecl.superclass;
+  ClassMirror superOfStringAndInt = genericOfString.superclass;
+
+  Expect.isTrue(genericDecl.isOriginalDeclaration);
+  Expect.isFalse(genericOfString.isOriginalDeclaration);
+  Expect.isTrue(superGenericDecl.isOriginalDeclaration);
+  Expect.isFalse(superOfTAndInt.isOriginalDeclaration);
+  Expect.isFalse(superOfStringAndInt.isOriginalDeclaration);
+
+  Symbol r(ClassMirror cm) =>
+      (cm.declarations[#r] as VariableMirror).type.simpleName;
+  Symbol s(ClassMirror cm) =>
+      (cm.declarations[#s] as MethodMirror).parameters[0].type.simpleName;
+  Symbol t(ClassMirror cm) =>
+      (cm.declarations[#t] as MethodMirror).returnType.simpleName;
+
+  Expect.equals(#T, r(genericDecl.superclass));
+  Expect.equals(#int, s(genericDecl.superclass));
+  Expect.equals(#T, t(genericDecl));
+
+  Expect.equals(#String, r(genericOfString.superclass));
+  Expect.equals(#int, s(genericOfString.superclass));
+  Expect.equals(#String, t(genericOfString));
+
+  Expect.equals(#R, r(superGenericDecl));
+  Expect.equals(#S, s(superGenericDecl));
+
+  Expect.equals(#T, r(superOfTAndInt));
+  Expect.equals(#int, s(superOfTAndInt));
+
+  Expect.equals(#String, r(superOfStringAndInt));
+  Expect.equals(#int, s(superOfStringAndInt));
+}