From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- js/src/jit-test/tests/for-of/strings.js | 47 +++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 js/src/jit-test/tests/for-of/strings.js (limited to 'js/src/jit-test/tests/for-of/strings.js') diff --git a/js/src/jit-test/tests/for-of/strings.js b/js/src/jit-test/tests/for-of/strings.js new file mode 100644 index 0000000000..1dab295b01 --- /dev/null +++ b/js/src/jit-test/tests/for-of/strings.js @@ -0,0 +1,47 @@ +// for-of works on strings and String objects. + +load(libdir + "string.js"); + +function test(s, expectedCodePoints) { + var copy = ''; + var codepoints = 0; + var singleHighSurrogate = false; + for (var v of s) { + assertEq(typeof v, 'string'); + assertEq(v.length, isSurrogatePair(v) ? 2 : 1); + assertEq(false, singleHighSurrogate && isLowSurrogate(v)); + copy += v; + codepoints += 1; + singleHighSurrogate = !isSurrogatePair(v) && isHighSurrogate(v); + } + assertEq(copy, String(s)); + assertEq(codepoints, expectedCodePoints); +} + +test('', 0); +test('abc', 3); +test('a \0 \ufffe \ufeff', 7); + +// Non-BMP characters are generally passed to JS in UTF-16, as surrogate pairs. +// ES6 requires that such pairs be treated as a single code point in for-of. +test('\ud808\udf45', 1); + +// Also test invalid surrogate pairs: +// (1) High surrogate not followed by low surrogate +test('\ud808', 1); +test('\ud808\u0000', 2); +// (2) Low surrogate not preceded by high surrogate +test('\udf45', 1); +test('\u0000\udf45', 2); +// (3) Low surrogate followed by high surrogate +test('\udf45\ud808', 2); + +test(new String(''), 0); +test(new String('abc'), 3); +test(new String('a \0 \ufffe \ufeff'), 7); +test(new String('\ud808\udf45'), 1); +test(new String('\ud808'), 1); +test(new String('\ud808\u0000'), 2); +test(new String('\udf45'), 1); +test(new String('\u0000\udf45'), 2); +test(new String('\udf45\ud808'), 2); -- cgit v1.2.3