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authorMoonchild <moonchild@palemoon.org>2022-05-21 16:38:37 +0000
committerMoonchild <moonchild@palemoon.org>2022-05-21 16:38:37 +0000
commit2694995e52a0bd767acac74f2306767d0a3720c9 (patch)
treed2a1198ccd0b8eab1b0b589b6900845aa3b87d5b /js/src/tests/test262/language/expressions/coalesce/chainable-if-parenthesis-covered-logical-and.js
parentf532bbd7af98d2cb543bf86b93b0e0e9fa1e9b2a (diff)
parent00c51f75fa4845f348708a796d552ca281f8210a (diff)
downloaduxp-1210.tar.gz
Merge branch 'master' into 12101210
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diff --git a/js/src/tests/test262/language/expressions/coalesce/chainable-if-parenthesis-covered-logical-and.js b/js/src/tests/test262/language/expressions/coalesce/chainable-if-parenthesis-covered-logical-and.js
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+++ b/js/src/tests/test262/language/expressions/coalesce/chainable-if-parenthesis-covered-logical-and.js
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+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+ CoalesceExpression is chainable with the LogicalANDExpression is any is covered.
+esid: sec-conditional-operator
+info: |
+ ConditionalExpression :
+ ShortCircuitExpression
+ ShortCircuitExpression ? AssignmentExpression : AssignmentExpression
+
+ ShortCircuitExpression :
+ LogicalORExpression
+ CoalesceExpression
+
+ CoalesceExpression :
+ CoalesceExpressionHead ?? BitwiseORExpression
+
+ CoalesceExpressionHead :
+ CoalesceExpression
+ BitwiseORExpression
+
+ Runtime Semantics: Evaluation
+
+ CoalesceExpression:CoalesceExpressionHead??BitwiseORExpression
+
+ 1. Let lref be the result of evaluating CoalesceExpressionHead.
+ 2. Let lval be ? GetValue(lref).
+ 3. If lval is undefined or null,
+ a. Let rref be the result of evaluating BitwiseORExpression.
+ b. Return ? GetValue(rref).
+ 4. Otherwise, return lval.
+features: [coalesce-expression]
+---*/
+
+var x;
+
+x = undefined;
+x = (null ?? 41) && 42;
+assert.sameValue(x, 42, '(null ?? 41) && 42');
+
+x = undefined;
+x = null ?? (41 && 42);
+assert.sameValue(x, 42, 'null ?? (41 && 42)`');
+
+x = undefined;
+x = (41 && 42) ?? null;
+assert.sameValue(x, 42, '(41 && 42) ?? null');
+
+x = undefined;
+x = 41 && (null ?? 42);
+assert.sameValue(x, 42, '41 && (null ?? 42)`');
+
+reportCompare(0, 0);