diff options
Diffstat (limited to 'js/src/jit-test/tests/arguments/iterator-set-and-redefine.js')
-rw-r--r-- | js/src/jit-test/tests/arguments/iterator-set-and-redefine.js | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/arguments/iterator-set-and-redefine.js b/js/src/jit-test/tests/arguments/iterator-set-and-redefine.js new file mode 100644 index 0000000000..bcf182790f --- /dev/null +++ b/js/src/jit-test/tests/arguments/iterator-set-and-redefine.js @@ -0,0 +1,33 @@ +function mapped() { + var Iterator = {}; + + // First overwrite the iterator. + arguments[Symbol.iterator] = Iterator; + + // And then redefine a property attribute. + Object.defineProperty(arguments, Symbol.iterator, { + writable: false + }); + + // Make sure redefining an attribute doesn't reset the iterator value. + assertEq(arguments[Symbol.iterator], Iterator); +} +mapped(); + +function unmapped() { + "use strict"; + + var Iterator = {}; + + // First overwrite the iterator. + arguments[Symbol.iterator] = Iterator; + + // And then redefine a property attribute. + Object.defineProperty(arguments, Symbol.iterator, { + writable: false + }); + + // Make sure redefining an attribute doesn't reset the iterator value. + assertEq(arguments[Symbol.iterator], Iterator); +} +unmapped(); |