diff options
Diffstat (limited to 'js/src/tests/test262/language/expressions/coalesce/short-circuit-number-symbol.js')
-rw-r--r-- | js/src/tests/test262/language/expressions/coalesce/short-circuit-number-symbol.js | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/coalesce/short-circuit-number-symbol.js b/js/src/tests/test262/language/expressions/coalesce/short-circuit-number-symbol.js new file mode 100644 index 0000000000..827c6e8535 --- /dev/null +++ b/js/src/tests/test262/language/expressions/coalesce/short-circuit-number-symbol.js @@ -0,0 +1,84 @@ +// Copyright (C) 2019 Leo Balter. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +description: > + Short circuit if the CoalesceExpressionHead is not undefined or null (Symbol) +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; +var s = Symbol(); + +x = undefined; +x = s ?? 1; +assert.sameValue(x, s, 's ?? null'); + +x = undefined; +x = s ?? null; +assert.sameValue(x, s, 's ?? null'); + +x = undefined; +x = s ?? undefined; +assert.sameValue(x, s, 's ?? undefined'); + +x = undefined; +x = s ?? null ?? undefined; +assert.sameValue(x, s, 's ?? null ?? undefined'); + +x = undefined; +x = s ?? undefined ?? null; +assert.sameValue(x, s, 's ?? undefined ?? null'); + +x = undefined; +x = s ?? null ?? null; +assert.sameValue(x, s, 's ?? null ?? null'); + +x = undefined; +x = s ?? undefined ?? undefined; +assert.sameValue(x, s, 's ?? null ?? null'); + +x = undefined; +x = null ?? s ?? null; +assert.sameValue(x, s, 'null ?? s ?? null'); + +x = undefined; +x = null ?? s ?? undefined; +assert.sameValue(x, s, 'null ?? s ?? undefined'); + +x = undefined; +x = undefined ?? s ?? null; +assert.sameValue(x, s, 'undefined ?? s ?? null'); + +x = undefined; +x = undefined ?? s ?? undefined; +assert.sameValue(x, s, 'undefined ?? s ?? undefined'); + +reportCompare(0, 0); |