Implement ObjectMirror.[]

tests/lib/mirrors/invoke_subscript_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.invoke_subscript_test;
+
+import 'dart:mirrors';
+import 'package:expect/expect.dart';
+
+class Super {
+  inheritedMethod(a, b) => a + b;
+  staticFunctionInSuper(x) => x;
+}
+
+class Class extends Super {
+  var field = 'f';
+  get getter => 'g';
+  set setter(v) => 's';
+  method(x, y, z) => '$x-$y-$z';
+  methodWithNamed(x, {y, z:'Z'}) => '$x+$y+$z';
+  methodWithOptPos(x, [y, z='Z']) => '$x*$y*$z';
+
+  static var staticField = 'sf';
+  static get staticGetter => 'sg';
+  static set staticSetter(v) => 'ss';
+  static staticFunction(x, y, z) => '$x-$y-$z';
+  static staticFunctionWithNamed(x, {y, z:'Z'}) => '$x+$y+$z';
+  static staticFunctionWithOptPos(x, [y, z='Z']) => '$x*$y*$z';
+
+}
+
+var toplevelField ='tf';
+get toplevelGetter => 'tg';
+set toplevelSetter(v) => 'ts';
+toplevelFunction(x, y, z) => '$x-$y-$z';
+toplevelFunctionWithNamed(x, {y, z:'Z'}) => '$x+$y+$z';
+toplevelFunctionWithOptPos(x, [y, z='Z']) => '$x*$y*$z';
+
+expectArgumentError(f) {
+  Expect.throws(f, (e) => e is ArgumentError);
+}
+
+main() {
+  InstanceMirror im = reflect(new Class());
+  Expect.equals('A-B-C', im[#method]('A', 'B', 'C').reflectee);
+  Expect.throws(() => im[#method]('A', 'B', 'C', 'D'),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+  Expect.equals(7, im[#inheritedMethod](3, 4).reflectee);
+  expectArgumentError(() => im[#field]);
+  expectArgumentError(() => im[#getter]);
+  expectArgumentError(() => im[#setter]);
+  expectArgumentError(() => im[#doesntExist]);
+  expectArgumentError(() => im[#staticFunction]);
+
+  ClassMirror cm = reflectClass(Class);
+  Expect.equals('A-B-C', cm[#staticFunction]('A', 'B', 'C').reflectee);
+  Expect.throws(() => cm[#staticFunction]('A', 'B', 'C', 'D'),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+  expectArgumentError(() => cm[#staticField]);
+  expectArgumentError(() => cm[#staticGetter]);
+  expectArgumentError(() => cm[#staticSetter]);
+  expectArgumentError(() => cm[#staticDoesntExist]);
+  expectArgumentError(() => cm[#staticFunctionInSuper]);
+  expectArgumentError(() => cm[#method]);
+
+  LibraryMirror lm = cm.owner;
+  Expect.equals('A-B-C', lm[#toplevelFunction]('A', 'B', 'C').reflectee);
+  Expect.throws(() => lm[#toplevelFunction]('A', 'B', 'C', 'D'),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+
+  expectArgumentError(() => lm[#toplevelField]);
+  expectArgumentError(() => lm[#toplevelGetter]);
+  expectArgumentError(() => lm[#toplevelSetter]);
+  expectArgumentError(() => lm[#toplevelDoesntExist]);
+
+  // dart2js might stop testing here.
+
+  Expect.equals('A+B+Z', im[#methodWithNamed]('A', y: 'B').reflectee);
+  Expect.equals('A*B*Z', im[#methodWithOptPos]('A', 'B').reflectee);
+  Expect.throws(() => im[#methodWithNamed]('A', w: 'D'),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+  Expect.throws(() => im[#method](),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+
+  Expect.equals('A+B+Z', cm[#staticFunctionWithNamed]('A', y: 'B').reflectee);
+  Expect.equals('A*B*Z', cm[#staticFunctionWithOptPos]('A', 'B').reflectee);
+  Expect.throws(() => cm[#staticFunctionWithNamed]('A', w: 'D'),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+  Expect.throws(() => cm[#staticFunctionWithOptPos](),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+
+  Expect.equals('A+B+Z', lm[#toplevelFunctionWithNamed]('A', y: 'B').reflectee);
+  Expect.equals('A*B*Z', lm[#toplevelFunctionWithOptPos]('A', 'B').reflectee);
+  Expect.throws(() => lm[#toplevelFunctionWithNamed]('A', w: 'D'),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+  Expect.throws(() => lm[#toplevelFunctionWithOptPos](),
+                (e) => e is NoSuchMethodError,
+                'Wrong arity');
+}