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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/Array/sort-non-function.js | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/sort-non-function.js b/js/src/tests/non262/Array/sort-non-function.js new file mode 100644 index 0000000000..91e3045932 --- /dev/null +++ b/js/src/tests/non262/Array/sort-non-function.js @@ -0,0 +1,22 @@ +// Array.prototype.sort throws if the comparator is neither undefined nor +// a callable object. + +// Use a zero length array, so we can provide any kind of callable object +// without worrying that the function is actually a valid comparator function. +const array = new Array(0); + +// Throws if the comparator is neither undefined nor callable. +for (let invalidComparator of [null, 0, true, Symbol(), {}, []]) { + assertThrowsInstanceOf(() => array.sort(invalidComparator), TypeError); +} + +// Doesn't throw if the comparator is undefined or a callable object. +for (let validComparator of [undefined, () => {}, Math.max, class {}, new Proxy(function(){}, {})]) { + array.sort(validComparator); +} + +// Also doesn't throw if no comparator was provided at all. +array.sort(); + +if (typeof reportCompare === "function") + reportCompare(0, 0); |