66 lines
2.3 KiB
JavaScript
66 lines
2.3 KiB
JavaScript
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// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --harmony-block-scoping
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// Test let declarations in various settings.
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// Global
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let x;
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let y = 2;
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// Block local
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{
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let y;
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let x = 3;
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}
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assertEquals(undefined, x);
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assertEquals(2,y);
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if (true) {
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let y;
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assertEquals(undefined, y);
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}
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function TestLocalThrows(str, expect) {
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assertThrows("(function(){" + str + "})()", expect);
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}
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function TestLocalDoesNotThrow(str) {
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assertDoesNotThrow("(function(){" + str + "})()");
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}
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// Unprotected statement
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TestLocalThrows("if (true) let x;", SyntaxError);
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TestLocalThrows("do let x; while (false)", SyntaxError);
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TestLocalThrows("while (false) let x;", SyntaxError);
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TestLocalDoesNotThrow("if (true) var x;");
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TestLocalDoesNotThrow("do var x; while (false)");
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TestLocalDoesNotThrow("while (false) var x;");
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