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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/BigInt/large-bit-length.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/BigInt/large-bit-length.js | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/non262/BigInt/large-bit-length.js b/js/src/tests/non262/BigInt/large-bit-length.js new file mode 100644 index 0000000000..5f4617159b --- /dev/null +++ b/js/src/tests/non262/BigInt/large-bit-length.js @@ -0,0 +1,33 @@ +// Any copyright is dedicated to the Public Domain. +// https://creativecommons.org/licenses/publicdomain/ + +function test(thunk, result) { + let val, err; + try { + val = thunk(); + } catch (e) { + err = e; + } + if (err) { + assertEq(err instanceof RangeError, true); + } else { + assertEq(val, result); + } +} + +const UINT32_MAX = 2**32-1; + +// Check that BigInt.asIntN and BigInt.asUintN either return correct results or +// throw RangeErrors for large |bits| arguments. GMP uses a type equivalent to +// 'unsigned long' for bit counts, which may be too small to represent all JS +// integer indexes. +for (let bits of [UINT32_MAX-1, UINT32_MAX, UINT32_MAX+1, Number.MAX_SAFE_INTEGER]) { + test(() => BigInt.asIntN(bits, 1n), 1n); + test(() => BigInt.asIntN(bits, 0n), 0n); + test(() => BigInt.asIntN(bits, -1n), -1n); + test(() => BigInt.asUintN(bits, 1n), 1n); + test(() => BigInt.asUintN(bits, 0n), 0n); + // Skip testing asUintN with negative BigInts since it could OOM. +} + +reportCompare(true, true); |