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Diffstat (limited to 'deps/v8/test/mjsunit/array-join.js')
-rw-r--r-- | deps/v8/test/mjsunit/array-join.js | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/array-join.js b/deps/v8/test/mjsunit/array-join.js index c08c182fee..0c949e769a 100644 --- a/deps/v8/test/mjsunit/array-join.js +++ b/deps/v8/test/mjsunit/array-join.js @@ -91,3 +91,16 @@ for (var i = 0; i < a.length; i++) a[i] = undefined; a[5] = "ab"; a[90000] = "cd"; assertEquals("abcd", a.join("")); // Must not throw. + + +// Make sure that each element is accessed exactly once, and in the correct +// order. +{ + var log = []; + var p = new Proxy({length: 3, 0: 'a', 1: 'b'}, { + get: function(t, k, r) { log.push(k); return Reflect.get(t, k, r); } + }); + + assertEquals("a,b,", Array.prototype.join.call(p)); + assertEquals(["length", "0", "1", "2"], log); +} |