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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 // Test that native methods with unnamed* optional arguments are called with the | |
6 // number of arguments in the call site. This is necessary because native | |
7 // methods can dispatch on the number of arguments. Passing null or undefined | |
8 // as the last argument is not the same as passing one fewer argument. | |
9 // | |
10 // * Named arguments are passed in the correct position, so require preceding | |
11 // arguments to be passed. | |
12 | |
13 class A native "*A" { | |
14 int foo(int x) native; | |
15 } | |
16 | |
17 class B native "*B" { | |
18 int foo([x, y, z]) native; | |
19 } | |
20 | |
21 // TODO(sra): Add a case where the parameters have default values. Wait until | |
22 // dart:dom_deprecated / dart:html need non-null default values. | |
23 | |
24 A makeA() native { return new A(); } | |
25 B makeB() native { return new B(); } | |
26 | |
27 void setup() native """ | |
28 function A() {} | |
29 A.prototype.foo = function () { return arguments.length; }; | |
30 | |
31 function B() {} | |
32 B.prototype.foo = function () { return arguments.length; }; | |
33 | |
34 makeA = function(){return new A;}; | |
35 makeB = function(){return new B;}; | |
36 """; | |
37 | |
38 | |
39 testDynamicContext() { | |
40 var things = [makeA(), makeB()]; | |
41 var a = things[0]; | |
42 var b = things[1]; | |
43 | |
44 Expect.throws(() => a.foo()); | |
45 Expect.equals(1, a.foo(10)); | |
46 Expect.throws(() => a.foo(10, 20)); | |
47 Expect.throws(() => a.foo(10, 20, 30)); | |
48 | |
49 Expect.equals(0, b.foo()); | |
50 Expect.equals(1, b.foo(10)); | |
51 Expect.equals(2, b.foo(10, 20)); | |
52 Expect.equals(3, b.foo(10, 20, 30)); | |
53 | |
54 Expect.equals(1, b.foo(x: 10)); // 1 = x | |
55 Expect.equals(2, b.foo(y: 20)); // 2 = x, y | |
56 Expect.equals(3, b.foo(z: 30)); // 3 = x, y, z | |
57 Expect.throws(() => b.foo(10, 20, 30, 40)); | |
58 } | |
59 | |
60 testStaticContext() { | |
61 A a = makeA(); | |
62 B b = makeB(); | |
63 | |
64 Expect.throws(() => a.foo()); | |
65 Expect.equals(1, a.foo(10)); | |
66 Expect.throws(() => a.foo(10, 20)); | |
67 Expect.throws(() => a.foo(10, 20, 30)); | |
68 | |
69 Expect.equals(0, b.foo()); | |
70 Expect.equals(1, b.foo(10)); | |
71 Expect.equals(2, b.foo(10, 20)); | |
72 Expect.equals(3, b.foo(10, 20, 30)); | |
73 | |
74 Expect.equals(1, b.foo(x: 10)); | |
75 Expect.equals(2, b.foo(y: 20)); | |
76 Expect.equals(3, b.foo(z: 30)); | |
77 Expect.throws(() => b.foo(10, 20, 30, 40)); | |
78 } | |
79 | |
80 main() { | |
81 setup(); | |
82 testDynamicContext(); | |
83 testStaticContext(); | |
84 } | |
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