Clean up ClosureMirror.invoke(#call, ...).

tests/lib/mirrors/invoke_call_on_closure_test.dart

+// Copyright (c) 2014, 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_call_on_closure;
+
+import 'dart:mirrors';
+
+import 'package:expect/expect.dart';
+
+class FakeFunctionCall {
+  call(x, y) => '1 $x $y';
+}
+class FakeFunctionNSM {
+  noSuchMethod(msg) => msg.positionalArguments.join(', ');
+}
+
+class C {
+  get fakeFunctionCall => new FakeFunctionCall();
+  get fakeFunctionNSM => new FakeFunctionNSM();
+  get closure => (x, y) => '2 $this $x $y';
+  get closureOpt => (x, y, [z, w]) => '3 $this $x $y $z $w';
+  get closureNamed => (x, y, {z, w}) => '4 $this $x $y $z $w';
+  tearOff(x, y) => '22 $this $x $y';
+  tearOffOpt(x, y, [z, w]) => '33 $this $x $y $z $w';
+  tearOffNamed(x, y, {z, w}) => '44 $this $x $y $z $w';
+
+  noSuchMethod(msg) => 'DNU';
+
+  toString() => 'C';
+}
+
+main() {
+  var c = new C();
+  InstanceMirror im;
+
+  im = reflect(c.fakeFunctionCall);
+  Expect.equals('1 5 6',
+                im.invoke(#call, [5, 6]).reflectee);
+
+  im = reflect(c.fakeFunctionNSM);
+  Expect.equals('7, 8',
+                im.invoke(#call, [7, 8]).reflectee);
+
+  im = reflect(c.closure);
+  Expect.equals('2 C 9 10',
+                im.invoke(#call, [9, 10]).reflectee);
+
+  im = reflect(c.closureOpt);
+  Expect.equals('3 C 11 12 13 null',
+                im.invoke(#call, [11, 12, 13]).reflectee);
+
+  im = reflect(c.closureNamed);
+  Expect.equals('4 C 14 15 null 16',
+                im.invoke(#call, [14, 15], {#w: 16}).reflectee);
+
+  im = reflect(c.tearOff);
+  Expect.equals('22 C 9 10',
+                im.invoke(#call, [9, 10]).reflectee);
+
+  im = reflect(c.tearOffOpt);
+  Expect.equals('33 C 11 12 13 null',
+                im.invoke(#call, [11, 12, 13]).reflectee);
+
+  im = reflect(c.tearOffNamed);
+  Expect.equals('44 C 14 15 null 16',
+                im.invoke(#call, [14, 15], {#w: 16}).reflectee);
+}