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// Test for conflicting variable bindings.
6
7// Flags: --harmony-sloppy --harmony-sloppy-function
8
9function AssertEqualsStrictAndSloppy(value, code) {
10  assertEquals(value, eval("(function() {" + code + "})()"));
11  assertEquals(value, eval("(function() { 'use strict'; " + code + "})()"));
12  assertEquals(value, eval("(function() { var x = 0; {" + code + "} })()"));
13  assertEquals(value, eval("(function() { 'use strict'; var x = 0; {"
14                           + code + "} })()"));
15}
16
17function AssertThrowsStrictAndSloppy(code, error) {
18  assertThrows("(function() {" + code + "})()", error);
19  assertThrows("(function() { 'use strict'; " + code + "})()", error);
20  assertThrows("(function() { var x = 0; { " + code + "} })()", error);
21  assertThrows("(function() { 'use strict'; var x = 0; {" + code + "} })()",
22               error);
23}
24
25(function TestClassTDZ() {
26  AssertEqualsStrictAndSloppy(
27      "x", "function f() { return x; }; class x { }; return f().name;");
28  AssertEqualsStrictAndSloppy
29      ("x", "class x { }; function f() { return x; }; return f().name;");
30  AssertEqualsStrictAndSloppy(
31      "x", "class x { }; var result = f().name; " +
32      "function f() { return x; }; return result;");
33  AssertThrowsStrictAndSloppy(
34      "function f() { return x; }; f(); class x { };", ReferenceError);
35  AssertThrowsStrictAndSloppy(
36      "f(); function f() { return x; }; class x { };", ReferenceError);
37  AssertThrowsStrictAndSloppy(
38      "f(); class x { }; function f() { return x; };", ReferenceError);
39  AssertThrowsStrictAndSloppy(
40      "var x = 1; { f(); class x { }; function f() { return x; }; }",
41      ReferenceError);
42  AssertThrowsStrictAndSloppy("x = 3; class x { };", ReferenceError)
43})();
44
45(function TestClassNameConflict() {
46  AssertThrowsStrictAndSloppy("class x { }; var x;", SyntaxError);
47  AssertThrowsStrictAndSloppy("var x; class x { };", SyntaxError);
48  AssertThrowsStrictAndSloppy("class x { }; function x() { };", SyntaxError);
49  AssertThrowsStrictAndSloppy("function x() { }; class x { };", SyntaxError);
50  AssertThrowsStrictAndSloppy("class x { }; for (var x = 0; false;) { };",
51                              SyntaxError);
52  AssertThrowsStrictAndSloppy("for (var x = 0; false;) { }; class x { };",
53                              SyntaxError);
54})();
55
56(function TestClassMutableBinding() {
57  AssertEqualsStrictAndSloppy(
58      "x3", "class x { }; var y = x.name; x = 3; return y + x;")
59})();
60