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59 lines
1.6 KiB
JavaScript
59 lines
1.6 KiB
JavaScript
// Copyright (C) 2020 Rick Waldron. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: |
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White Space and Line Terminator between LeftHandSideExpression and "@="
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or between "@=" and AssignmentExpression are allowed
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esid: sec-assignment-operators
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description: Checking by evaluating expression "x[...]??=[...]y"
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features: [logical-assignment-operators]
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---*/
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var x;
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x = null;
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assert.sameValue(x ??= 1, 1, 'U+0009 (expression)');
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assert.sameValue(x, 1, 'U+0009 (side effect)');
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x = null;
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assert.sameValue(x ??= 1, 1, 'U+000B (expression)');
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assert.sameValue(x, 1, 'U+000B (side effect)');
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x = null;
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assert.sameValue(x ??= 1, 1, 'U+000C (expression)');
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assert.sameValue(x, 1, 'U+000C (side effect)');
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x = null;
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assert.sameValue(x ??= 1, 1, 'U+0020 (expression)');
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assert.sameValue(x, 1, 'U+0020 (side effect)');
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x = null;
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assert.sameValue(x ??= 1, 1, 'U+00A0 (expression)');
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assert.sameValue(x, 1, 'U+00A0 (side effect)');
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x = null;
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assert.sameValue(x
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??=
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1, 1, 'U+000A (expression)');
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assert.sameValue(x, 1, 'U+000A (side effect)');
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x = null;
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assert.sameValue(x
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??=
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1, 1, 'U+000D (expression)');
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assert.sameValue(x, 1, 'U+000D (side effect)');
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x = null;
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assert.sameValue(x
??=
1, 1, 'U+2028 (expression)');
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assert.sameValue(x, 1, 'U+2028 (side effect)');
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x = null;
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assert.sameValue(x
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1, 1, 'U+2029 (expression)');
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assert.sameValue(x, 1, 'U+2029 (side effect)');
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x = null;
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assert.sameValue(x
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??=
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1, 1, 'U+0009U+000BU+000CU+0020U+00A0U+000AU+000DU+2028U+2029 (expression)');
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assert.sameValue(x, 1, 'U+0009U+000BU+000CU+0020U+00A0U+000AU+000DU+2028U+2029 (side effect)');
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