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Diffstat (limited to 'js/src/jit-test/tests/ion/object-keys-05.js')
-rw-r--r-- | js/src/jit-test/tests/ion/object-keys-05.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/object-keys-05.js b/js/src/jit-test/tests/ion/object-keys-05.js new file mode 100644 index 0000000000..2bc0f6095e --- /dev/null +++ b/js/src/jit-test/tests/ion/object-keys-05.js @@ -0,0 +1,49 @@ + +// This test case is similar to object-keys-01, except that we replace +// `Object.keys` by a copy of it. +let myThis = { + keys: Object.keys +}; + +// Similar functions are part of popular framework such as React and Angular. +function shallowEqual(o1, o2) { + var k1 = myThis.keys(o1); + var k2 = myThis.keys(o2); + if (k1.length != k2.length) { + return false; + } + for (var k = 0; k < k1.length; k++) { + if (!Object.hasOwnProperty.call(o2, k1[k]) || !Object.is(o1[k1[k]], o2[k1[k]])) { + return false; + } + } + return true; +} + +let objs = [ + {x:0, a: 1, b: 2}, + {x:1, b: 1, c: 2}, + {x:2, c: 1, d: 2}, + {x:3, a: 1, b: 2, c: 3}, + {x:4, b: 1, c: 2, d: 3}, + {x:5, a: 1, b: 2, c: 3, d: 4} +]; + +with({}) {} +for (let i = 0; i < 1000; i++) { + for (let o1 of objs) { + for (let o2 of objs) { + assertEq(shallowEqual(o1, o2), Object.is(o1, o2)); + } + } +} + +let count = 0; +myThis.keys = function keys(obj) { + count++; + return Object.keys(obj); +} + +let o1 = objs[4], o2 = objs[5]; +assertEq(shallowEqual(o1, o2), Object.is(o1, o2)); +assertEq(count, 2); |