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Diffstat (limited to '')
-rw-r--r-- | js/src/jit-test/tests/ion/object-prototype-tostring.js | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/object-prototype-tostring.js b/js/src/jit-test/tests/ion/object-prototype-tostring.js new file mode 100644 index 0000000000..ad06dbde89 --- /dev/null +++ b/js/src/jit-test/tests/ion/object-prototype-tostring.js @@ -0,0 +1,45 @@ +var toString = Object.prototype.toString; +var iter = 500; + +function testConstant() { + for (var i = 0; i < iter; i++) { + assertEq(({}).toString(), "[object Object]"); + assertEq(toString.call([]), "[object Array]"); + assertEq(toString.call(Math.abs), "[object Function]"); + } +} +testConstant(); + +function testOwnToStringTag() { + var stringify = o => toString.call(o); + var o = {}; + for (var i = 0; i < iter; i++) + assertEq(stringify(o), "[object Object]"); + o[Symbol.toStringTag] = "foo"; + for (var i = 0; i < iter; i++) + assertEq(stringify(o), "[object foo]"); +} +testOwnToStringTag(); + +function testDynamic() { + var arr = [{}, [], new Date, /a/]; + var expected = ["[object Object]", "[object Array]", "[object Date]", "[object RegExp]"]; + for (var i = 0; i < iter; i++) { + for (var j = 0; j < arr.length; j++) + assertEq(toString.call(arr[j]), expected[j]); + } +} +testDynamic(); + +function testToStringTagProto() { + var c = 0; + Object.defineProperty(Date.prototype, Symbol.toStringTag, {get() { c++; return "evil"; }}); + var arr = [{}, [], new Date, /a/]; + var expected = ["[object Object]", "[object Array]", "[object evil]", "[object RegExp]"]; + for (var i = 0; i < iter; i++) { + for (var j = 0; j < arr.length; j++) + assertEq(toString.call(arr[j]), expected[j]); + } + assertEq(c, iter); +} +testToStringTagProto(); |