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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/Array/from_string.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/non262/Array/from_string.js')
-rw-r--r-- | js/src/tests/non262/Array/from_string.js | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/from_string.js b/js/src/tests/non262/Array/from_string.js new file mode 100644 index 0000000000..3ad19e253a --- /dev/null +++ b/js/src/tests/non262/Array/from_string.js @@ -0,0 +1,23 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ */ + +// Array.from on a string iterates over the string. +assertDeepEq(Array.from("test string"), + ['t', 'e', 's', 't', ' ', 's', 't', 'r', 'i', 'n', 'g']); + +// Array.from on a string handles surrogate pairs correctly. +var gclef = "\uD834\uDD1E"; // U+1D11E MUSICAL SYMBOL G CLEF +assertDeepEq(Array.from(gclef), [gclef]); +assertDeepEq(Array.from(gclef + " G"), [gclef, " ", "G"]); + +// Array.from on a string calls the @@iterator method. +String.prototype[Symbol.iterator] = function* () { yield 1; yield 2; }; +assertDeepEq(Array.from("anything"), [1, 2]); + +// If the iterator method is deleted, Strings are still arraylike. +delete String.prototype[Symbol.iterator]; +assertDeepEq(Array.from("works"), ['w', 'o', 'r', 'k', 's']); +assertDeepEq(Array.from(gclef), ['\uD834', '\uDD1E']); + +if (typeof reportCompare === 'function') + reportCompare(0, 0); |