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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/RegExp/lastIndex-exec.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/RegExp/lastIndex-exec.js | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/js/src/tests/non262/RegExp/lastIndex-exec.js b/js/src/tests/non262/RegExp/lastIndex-exec.js new file mode 100644 index 0000000000..f42facbe34 --- /dev/null +++ b/js/src/tests/non262/RegExp/lastIndex-exec.js @@ -0,0 +1,80 @@ +// RegExp.prototype.exec: Test lastIndex changes for ES2017. + +// Test various combinations of: +// - Pattern matches or doesn't match +// - Global and/or sticky flag is set. +// - lastIndex exceeds the input string length +// - lastIndex is +-0 +const testCases = [ + { regExp: /a/, lastIndex: 0, input: "a", result: 0 }, + { regExp: /a/g, lastIndex: 0, input: "a", result: 1 }, + { regExp: /a/y, lastIndex: 0, input: "a", result: 1 }, + + { regExp: /a/, lastIndex: 0, input: "b", result: 0 }, + { regExp: /a/g, lastIndex: 0, input: "b", result: 0 }, + { regExp: /a/y, lastIndex: 0, input: "b", result: 0 }, + + { regExp: /a/, lastIndex: -0, input: "a", result: -0 }, + { regExp: /a/g, lastIndex: -0, input: "a", result: 1 }, + { regExp: /a/y, lastIndex: -0, input: "a", result: 1 }, + + { regExp: /a/, lastIndex: -0, input: "b", result: -0 }, + { regExp: /a/g, lastIndex: -0, input: "b", result: 0 }, + { regExp: /a/y, lastIndex: -0, input: "b", result: 0 }, + + { regExp: /a/, lastIndex: -1, input: "a", result: -1 }, + { regExp: /a/g, lastIndex: -1, input: "a", result: 1 }, + { regExp: /a/y, lastIndex: -1, input: "a", result: 1 }, + + { regExp: /a/, lastIndex: -1, input: "b", result: -1 }, + { regExp: /a/g, lastIndex: -1, input: "b", result: 0 }, + { regExp: /a/y, lastIndex: -1, input: "b", result: 0 }, + + { regExp: /a/, lastIndex: 100, input: "a", result: 100 }, + { regExp: /a/g, lastIndex: 100, input: "a", result: 0 }, + { regExp: /a/y, lastIndex: 100, input: "a", result: 0 }, +]; + +// Basic test. +for (let {regExp, lastIndex, input, result} of testCases) { + let re = new RegExp(regExp); + re.lastIndex = lastIndex; + re.exec(input); + assertEq(re.lastIndex, result); +} + +// Test when lastIndex is non-writable. +for (let {regExp, lastIndex, input} of testCases) { + let re = new RegExp(regExp); + Object.defineProperty(re, "lastIndex", { value: lastIndex, writable: false }); + if (re.global || re.sticky) { + assertThrowsInstanceOf(() => re.exec(input), TypeError); + } else { + re.exec(input); + } + assertEq(re.lastIndex, lastIndex); +} + +// Test when lastIndex is changed to non-writable as a side-effect. +for (let {regExp, lastIndex, input} of testCases) { + let re = new RegExp(regExp); + let called = false; + re.lastIndex = { + valueOf() { + assertEq(called, false); + called = true; + Object.defineProperty(re, "lastIndex", { value: 9000, writable: false }); + return lastIndex; + } + }; + if (re.global || re.sticky) { + assertThrowsInstanceOf(() => re.exec(input), TypeError); + } else { + re.exec(input); + } + assertEq(re.lastIndex, 9000); + assertEq(called, true); +} + +if (typeof reportCompare === "function") + reportCompare(true, true); |