v8/test/mjsunit/harmony/block-non-strict-errors.js
2014-11-18 18:51:26 +00:00

36 lines
855 B
JavaScript

// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-scoping
function CheckError(source) {
var exception = null;
try {
eval(source);
} catch (e) {
exception = e;
}
assertNotNull(exception);
assertEquals(
"Lexical declarations are currently only allowed in strict mode",
exception.message);
}
function CheckOk(source) {
eval(source);
}
CheckError("let x = 1;");
CheckError("{ let x = 1; }");
CheckError("function f() { let x = 1; }");
CheckError("for (let x = 1; x < 1; x++) {}");
CheckError("for (let x of []) {}");
CheckError("for (let x in []) {}");
CheckOk("let = 1;");
CheckOk("{ let = 1; }");
CheckOk("function f() { let = 1; }");
CheckOk("for (let = 1; let < 1; let++) {}");