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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/Date/equality-to-boolean.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/Date/equality-to-boolean.js | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/non262/Date/equality-to-boolean.js b/js/src/tests/non262/Date/equality-to-boolean.js new file mode 100644 index 0000000000..c60319b9d9 --- /dev/null +++ b/js/src/tests/non262/Date/equality-to-boolean.js @@ -0,0 +1,39 @@ +// Any copyright is dedicated to the Public Domain. +// http://creativecommons.org/licenses/publicdomain/ + +//----------------------------------------------------------------------------- +print("Test for correct implementation of |Date == boolean| and vice versa"); + +/************** + * BEGIN TEST * + **************/ + +Date.prototype.toString = function() { return 1; }; +Date.prototype.valueOf = function() { return 0; }; + +/* + * ES5 11.9.3 doesn't directly handle obj == boolean. Instead it translates it + * as follows: + * + * obj == boolean + * ↳ obj == ToNumber(boolean), per step 7 + * ↳ ToPrimitive(obj) == ToNumber(boolean), per step 9 + * + * ToPrimitive calls [[DefaultValue]] with no hint. For Date objects this is + * treated as if it were instead called with hint String. That calls toString, + * which returns 1, so Date objects here should compare equal to true and + * unequal to false. + */ +assertEq(new Date == true, true); +assertEq(new Date == false, false); + +/* == is symmetric. */ +assertEq(true == new Date, true); +assertEq(false == new Date, false); + +/******************************************************************************/ + +if (typeof reportCompare === "function") + reportCompare(true, true); + +print("Tests complete"); |