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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/expressions/short-circuit-compound-assignment-deleted-decl-binding.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/expressions/short-circuit-compound-assignment-deleted-decl-binding.js | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/js/src/tests/non262/expressions/short-circuit-compound-assignment-deleted-decl-binding.js b/js/src/tests/non262/expressions/short-circuit-compound-assignment-deleted-decl-binding.js new file mode 100644 index 0000000000..256278a938 --- /dev/null +++ b/js/src/tests/non262/expressions/short-circuit-compound-assignment-deleted-decl-binding.js @@ -0,0 +1,65 @@ +// Test when a declarative binding is deleted. + +// ES2020, 8.1.1.1.5 SetMutableBinding ( N, V, S ) +// +// 1. ... +// 2. If envRec does not have a binding for N, then +// a. ... +// b. Perform envRec.CreateMutableBinding(N, true). +// c. Perform envRec.InitializeBinding(N, V). +// d. Return NormalCompletion(empty). +// 3. ... + +// AndAssignExpr +{ + let a = 0; + + let f = function() { + eval("var a = 1;"); + + a &&= (delete a, 2); + + assertEq(a, 2); + } + + f(); + + assertEq(a, 0); +} + +// OrAssignExpr +{ + let a = 1; + + let f = function() { + eval("var a = 0;"); + + a ||= (delete a, 2); + + assertEq(a, 2); + } + + f(); + + assertEq(a, 1); +} + +// CoalesceAssignExpr +{ + let a = undefined; + + let f = function() { + eval("var a = null;"); + + a ??= (delete a, 2); + + assertEq(a, 2); + } + + f(); + + assertEq(a, undefined); +} + +if (typeof reportCompare === "function") + reportCompare(0, 0); |