diff options
Diffstat (limited to 'js/src/jit-test/tests/cacheir/typedarray-non-int32-index-has.js')
-rw-r--r-- | js/src/jit-test/tests/cacheir/typedarray-non-int32-index-has.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/typedarray-non-int32-index-has.js b/js/src/jit-test/tests/cacheir/typedarray-non-int32-index-has.js new file mode 100644 index 0000000000..47eda321ad --- /dev/null +++ b/js/src/jit-test/tests/cacheir/typedarray-non-int32-index-has.js @@ -0,0 +1,37 @@ +function has(k) { + // Different typed array types to ensure we emit a HasProp IC. + var xs = [ + new Int32Array(10), + new Int16Array(10), + ]; + + // Doesn't read values from the prototype chain. + Object.prototype[k] = 1; + + for (var i = 0; i < 100; ++i) { + var x = xs[i & 1]; + assertEq(k in x, false); + } +} + +// Make sure we use a distinct function for each test. +function test(fn) { + return Function(`return ${fn};`)(); +} + +// Negative numbers values aren't int32 indices. +test(has)(-1); +test(has)(-2147483648); +test(has)(-2147483649); + +// Int32 indices must be less-or-equal to max-int32. +test(has)(2147483648); + +// Int32 indices must not have fractional parts. +test(has)(1.5); +test(has)(-1.5); + +// Non-finite numbers aren't int32 indices. +test(has)(NaN); +test(has)(-Infinity); +test(has)(Infinity); |