Add mirrors tests

test/codegen/lib/mirrors/mirrors_nsm_test.dart

+// Copyright (c) 2011, 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 MirrorsTest;
+
+import 'dart:mirrors';
+import 'package:expect/expect.dart';
+
+bool isNSMContainingFieldName(e, String fieldName, bool isSetter) {
+  print(e);
+  if (e is! NoSuchMethodError) return false;
+  String needle = fieldName;
+  if (isSetter) needle += "=";
+  return "$e".contains(needle) && ! "$e".contains(needle + "=");
+}
+
+final finalTopLevel = 0;
+class A {
+  final finalInstance = 0;
+  static final finalStatic = 0;
+}
+class B {
+  B(a, b);
+  factory B.fac(a, b) => new B(a, b);
+}
+
+testMessageContents() {
+  var mirrors = currentMirrorSystem();
+  var libMirror = mirrors.findLibrary(#MirrorsTest);
+  Expect.throws(() => libMirror.invoke(#foo, []),
+                (e) => isNSMContainingFieldName(e, "foo", false));
+  Expect.throws(() => libMirror.getField(#foo),
+                (e) => isNSMContainingFieldName(e, "foo", false));
+  Expect.throws(() => libMirror.setField(#foo, null),
+                (e) => isNSMContainingFieldName(e, "foo", true));
+  Expect.throws(() => libMirror.setField(#finalTopLevel, null),
+                (e) => isNSMContainingFieldName(e, "finalTopLevel", true));
+
+  var classMirror = reflectClass(A);
+  Expect.throws(() => classMirror.invoke(#foo, []),
+                (e) => isNSMContainingFieldName(e, "foo", false));
+  Expect.throws(() => classMirror.getField(#foo),
+                (e) => isNSMContainingFieldName(e, "foo", false));
+  Expect.throws(() => classMirror.setField(#foo, null),
+                (e) => isNSMContainingFieldName(e, "foo", true));
+  Expect.throws(() => classMirror.setField(#finalStatic, null),
+                (e) => isNSMContainingFieldName(e, "finalStatic", true));
+
+  var instanceMirror = reflect(new A());
+  Expect.throws(() => instanceMirror.invoke(#foo, []),
+                (e) => isNSMContainingFieldName(e, "foo", false));
+  Expect.throws(() => instanceMirror.getField(#foo),
+                (e) => isNSMContainingFieldName(e, "foo", false));
+  Expect.throws(() => instanceMirror.setField(#foo, null),
+                (e) => isNSMContainingFieldName(e, "foo", true));
+  Expect.throws(() => instanceMirror.setField(#finalInstance, null),
+                (e) => isNSMContainingFieldName(e, "finalInstance", true));
+}
+
+expectMatchingErrors(reflectiveAction, baseAction) {
+  var reflectiveError, baseError;
+  try {
+    reflectiveAction();
+  } catch(e) {
+    reflectiveError = e;
+  }
+
+  try {
+    baseAction();
+  } catch(e) {
+    baseError = e;
+  }
+
+  if (baseError.toString() != reflectiveError.toString()) {
+    print("\n==Base==\n $baseError");
+    print("\n==Reflective==\n $reflectiveError");
+    throw "Expected matching errors";
+  }
+}
+
+testMatchingMessages() {
+  var mirrors = currentMirrorSystem();
+  var libMirror = mirrors.findLibrary(#MirrorsTest);
+  expectMatchingErrors(() => libMirror.invoke(#foo, []),
+                       () => foo());
+  expectMatchingErrors(() => libMirror.getField(#foo),
+                       () => foo);
+  expectMatchingErrors(() => libMirror.setField(#foo, null),
+                       () => foo= null);
+  expectMatchingErrors(() => libMirror.setField(#finalTopLevel, null),
+                       () => finalTopLevel= null);
+
+  var classMirror = reflectClass(A);
+  expectMatchingErrors(() => classMirror.invoke(#foo, []),
+                       () => A.foo());
+  expectMatchingErrors(() => classMirror.getField(#foo),
+                       () => A.foo);
+  expectMatchingErrors(() => classMirror.setField(#foo, null),
+                       () => A.foo= null);
+  expectMatchingErrors(() => classMirror.setField(#finalStatic, null),
+                       () => A.finalStatic= null);
+  expectMatchingErrors(() => classMirror.newInstance(#constructor, [1, 2, 3]),
+                       () => new A.constructor(1, 2, 3));
+
+  var instanceMirror = reflect(new A());
+  expectMatchingErrors(() => instanceMirror.invoke(#foo, []),
+                       () => new A().foo());
+  expectMatchingErrors(() => instanceMirror.getField(#foo),
+                       () => new A().foo);
+  expectMatchingErrors(() => instanceMirror.setField(#foo, null),
+                       () => new A().foo= null);
+  expectMatchingErrors(() => instanceMirror.setField(#finalInstance, null),
+                       () => new A().finalInstance= null);
+}
+
+main() {
+  testMessageContents();
+  testMatchingMessages(); /// dart2js: ok
+}