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Issue 1078483002: [es6]: Lexical arguments for arrow functions (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Make arguments() DCHECK instead Created 5 years, 8 months ago
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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-arrow-functions --harmony-classes
6
7
8 (function testInFunctionDeclaration() {
9 var calls = 0;
10 function f() {
11 (() => {
12 calls++;
13 assertEquals(2, arguments.length);
14 assertEquals('a', arguments[0]);
15 assertEquals('b', arguments[1]);
16 })();
17 }
18 f('a', 'b');
19 assertEquals(1, calls);
20
21 calls = 0;
22 new f('a', 'b');
23 assertEquals(1, calls);
24 })();
25
26
27 (function testInFunctionExpression() {
28 var calls = 0;
29 var f = function() {
30 (() => {
31 calls++;
32 assertEquals(2, arguments.length);
33 assertEquals('a', arguments[0]);
34 assertEquals('b', arguments[1]);
35 })();
36 }
37 f('a', 'b');
38 assertEquals(1, calls);
39 })();
40
41
42 (function testInConstructor() {
43 'use strict';
44
45 var calls = 0;
46 class C {
47 constructor() {
48 (() => {
49 calls++;
50 assertEquals(2, arguments.length);
51 assertEquals('a', arguments[0]);
52 assertEquals('b', arguments[1]);
53 })();
54 }
55 }
56 new C('a', 'b');
57 assertEquals(1, calls);
58 })();
59
60
61 (function testInSetter() {
62 'use strict';
63
64 var calls = 0;
65 var o = {
66 set x(_) {
67 (() => {
68 calls++;
69 assertEquals(1, arguments.length);
70 assertEquals('a', arguments[0]);
71 })();
72 }
73 }
74 o.x = 'a';
75 assertEquals(1, calls);
76 })();
77
78
79 (function testMappedArguments() {
80 var calls = 0;
81 function f(x) {
82 x = 'c';
83 (() => {
84 calls++;
85 assertEquals(2, arguments.length);
86 assertEquals('c', arguments[0]);
87 x = 'a';
88 assertEquals('a', arguments[0]);
89 assertEquals('b', arguments[1]);
90 })();
91 }
92 f('a', 'b');
93 assertEquals(1, calls);
94 })();
95
96
97 (function testUnMappedArguments() {
98 'use strict';
99
100 var calls = 0;
101 function f(x) {
102 x = 'c';
103 (() => {
104 calls++;
105 assertEquals(2, arguments.length);
106 assertEquals('a', arguments[0]);
107 assertEquals('b', arguments[1]);
108 })();
109 }
110 f('a', 'b');
111 assertEquals(1, calls);
112 })();
113
114
115 (function testClosure() {
116 var calls = 0;
117 function f(x) {
118 return () => {
119 calls++;
120 assertEquals(2, arguments.length);
121 assertEquals('a', arguments[0]);
122 assertEquals('b', arguments[1]);
123 };
124 }
125 f('a', 'b')();
126 assertEquals(1, calls);
127 })();
128
129
130 (function testClosureMappedArguments() {
131 var calls = 0;
132 function f(x) {
133 x = 'c';
134 return () => {
135 calls++;
136 assertEquals(2, arguments.length);
137 assertEquals('c', arguments[0]);
138 x = 'a';
139 assertEquals('a', arguments[0]);
140 assertEquals('b', arguments[1]);
141 };
142 }
143 f('a', 'b')();
144 assertEquals(1, calls);
145 })();
146
147
148 (function testParamNamedArguments() {
149 var calls = 0;
150 function f(arguments) {
151 (() => {
152 calls++;
153 assertEquals('a', arguments);
154 })();
155 }
156 f('a');
157 assertEquals(1, calls);
158 })();
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