test262/test/language/expressions/compound-assignment/lshift-whitespace.js

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// Copyright 2009 the Sputnik authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
info: |
White Space and Line Terminator between LeftHandSideExpression and "@="
or between "@=" and AssignmentExpression are allowed
2014-07-25 00:41:42 +02:00
es5id: 11.13.2_A1_T6
2018-10-08 00:49:38 +02:00
esid: sec-assignment-operators
description: Checking by using eval, check operator is x <<= y
---*/
var x;
x = 1;
assert.sameValue(x <<= 1, 2, 'U+0009 (expression)');
assert.sameValue(x, 2, 'U+0009 (side effect)');
x = 1;
assert.sameValue(x <<= 1, 2, 'U+000B (expression)');
assert.sameValue(x, 2, 'U+000B (side effect)');
x = 1;
assert.sameValue(x <<= 1, 2, 'U+000C (expression)');
assert.sameValue(x, 2, 'U+000C (side effect)');
x = 1;
assert.sameValue(x <<= 1, 2, 'U+0020 (expression)');
assert.sameValue(x, 2, 'U+0020 (side effect)');
x = 1;
assert.sameValue(x <<= 1, 2, 'U+00A0 (expression)');
assert.sameValue(x, 2, 'U+00A0 (side effect)');
x = 1;
assert.sameValue(x
<<=
1, 2, 'U+000A (expression)');
assert.sameValue(x, 2, 'U+000A (side effect)');
x = 1;
assert.sameValue(x <<= 1, 2, 'U+000D (expression)');
assert.sameValue(x, 2, 'U+000D (side effect)');
x = 1;
assert.sameValue(x<<=1, 2, 'U+2028 (expression)');
assert.sameValue(x, 2, 'U+2028 (side effect)');
x = 1;
assert.sameValue(x<<=1, 2, 'U+2029 (expression)');
assert.sameValue(x, 2, 'U+2029 (side effect)');
x = 1;
assert.sameValue(x  
<<=  
1, 2, 'U+0009U+000BU+000CU+0020U+00A0U+000AU+000DU+2028U+2029 (expression)');
assert.sameValue(x, 2, 'U+0009U+000BU+000CU+0020U+00A0U+000AU+000DU+2028U+2029 (side effect)');