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1 // Copyright 2015 the V8 project authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 // Flags: --harmony-optional-params | |
6 | |
7 function return_specified() { return "specified"; } | |
8 | |
9 var method_returns_specified = { | |
10 method() { return "specified"; } | |
11 }; | |
12 | |
13 | |
14 (function testOptionalFunctions() { | |
15 function optional_function(handler = function() { }) { | |
16 assertEquals("function", typeof handler); | |
17 | |
18 // TODO(caitp): infer function name correctly | |
19 // (https://code.google.com/p/v8/issues/detail?id=3699) | |
20 // assertEquals("handler", handler.name); | |
21 | |
22 return handler(); | |
23 } | |
24 assertEquals(undefined, optional_function()); | |
25 assertEquals(undefined, optional_function(undefined)); | |
26 assertEquals("specified", optional_function(return_specified)); | |
27 })(); | |
28 | |
29 | |
30 (function testOptionalObjects() { | |
31 function optional_object(object = { method() { return "method"; } }) { | |
32 assertEquals("object", typeof object); | |
33 | |
34 assertEquals("function", typeof object.method); | |
35 return object.method(); | |
36 } | |
37 | |
38 assertEquals("method", optional_object()); | |
39 assertEquals("method", optional_object(undefined)); | |
40 assertEquals("specified", optional_object(method_returns_specified)); | |
41 })(); | |
42 | |
43 | |
44 // TDZ | |
45 | |
46 (function testReferencesUninitializedParameter(x = 1) { | |
47 assertThrows(function(a = b, b) {}, ReferenceError); | |
48 })(); | |
49 | |
50 | |
51 (function testReferencesInitializedParameter(x = 1) { | |
52 assertEquals(1, (function(a = 1, b = a) { return b; })()); | |
53 })(); | |
54 | |
55 | |
rossberg
2015/05/12 14:04:53
More tests, e.g.:
- (function(x = this) { return
caitp (gmail)
2015/05/12 18:35:35
Added eval and arrow variants to a bunch of these
rossberg
2015/05/20 07:41:47
Please add a couple of lazy parsing tests as well
caitp (gmail)
2015/05/20 11:29:38
I wasn't able to reproduce it with the regular des
| |
56 // Scoping | |
57 // | |
58 // TODO(caitp): fix scoping --- var declarations in function body can't be | |
59 // resolved in formal parameters | |
60 // assertThrows(function referencesVariableBodyDeclaration(a = body_var) { | |
61 // var body_var = true; | |
62 // return a; | |
63 // }, ReferenceError); | |
64 | |
65 | |
66 // TODO(caitp): default function length does not include any parameters | |
67 // following the first optional parameter | |
68 // assertEquals(0, (function(a = 1) {}).length); | |
69 // assertEquals(1, (function(a, b = 1) {}).length); | |
70 // assertEquals(2, (function(a, b, c = 1) {}).length); | |
71 // assertEquals(3, (function(a, b, c, d = 1) {}).length); | |
72 // assertEquals(1, (function(a, b = 1, c, d = 1) {}).length); | |
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