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| 1 // Copyright 2014 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-scoping |
| 6 |
| 7 function CheckError(source) { |
| 8 var exception = null; |
| 9 try { |
| 10 eval(source); |
| 11 } catch (e) { |
| 12 exception = e; |
| 13 } |
| 14 assertNotNull(exception); |
| 15 assertEquals( |
| 16 "Lexical declarations are currently only allowed in strict mode", |
| 17 exception.message); |
| 18 } |
| 19 |
| 20 |
| 21 function CheckOk(source) { |
| 22 eval(source); |
| 23 } |
| 24 |
| 25 CheckError("let x = 1;"); |
| 26 CheckError("{ let x = 1; }"); |
| 27 CheckError("function f() { let x = 1; }"); |
| 28 CheckError("for (let x = 1; x < 1; x++) {}"); |
| 29 CheckError("for (let x of []) {}"); |
| 30 CheckError("for (let x in []) {}"); |
| 31 |
| 32 CheckOk("let = 1;"); |
| 33 CheckOk("{ let = 1; }"); |
| 34 CheckOk("function f() { let = 1; }"); |
| 35 CheckOk("for (let = 1; let < 1; let++) {}"); |
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