| Index: test/mjsunit/array-push7.js
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| diff --git a/test/mjsunit/array-push7.js b/test/mjsunit/array-push7.js
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| new file mode 100644
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| index 0000000000000000000000000000000000000000..b45a739d70b99c266b57cd0d1be07bc3a3041060
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| --- /dev/null
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| +++ b/test/mjsunit/array-push7.js
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| @@ -0,0 +1,59 @@
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| +// Copyright 2014 the V8 project authors. All rights reserved.
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| +// Use of this source code is governed by a BSD-style license that can be
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| +// found in the LICENSE file.
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| +
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| +// Flags: --allow-natives-syntax
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| +
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| +var v = 0;
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| +
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| +function push_wrapper(array, value) {
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| +  array.push(value);
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| +}
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| +function pop_wrapper(array) {
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| +  return array.pop();
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| +}
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| +
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| +// Test that Object.observe() notification events are properly sent from
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| +// Array.push() and Array.pop() both from optimized and un-optimized code.
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| +var array = [];
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| +
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| +function somethingChanged(changes) {
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| +  v++;
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| +}
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| +
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| +Object.observe(array, somethingChanged);
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| +push_wrapper(array, 1);
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| +%RunMicrotasks();
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| +assertEquals(1, array.length);
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| +assertEquals(1, v);
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| +push_wrapper(array, 1);
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| +%RunMicrotasks();
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| +assertEquals(2, array.length);
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| +assertEquals(2, v);
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| +%OptimizeFunctionOnNextCall(push_wrapper);
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| +push_wrapper(array, 1);
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| +%RunMicrotasks();
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| +assertEquals(3, array.length);
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| +assertEquals(3, v);
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| +push_wrapper(array, 1);
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| +%RunMicrotasks();
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| +assertEquals(4, array.length);
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| +assertEquals(4, v);
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| +
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| +pop_wrapper(array);
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| +%RunMicrotasks();
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| +assertEquals(3, array.length);
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| +assertEquals(5, v);
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| +pop_wrapper(array);
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| +%RunMicrotasks();
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| +assertEquals(2, array.length);
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| +assertEquals(6, v);
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| +%OptimizeFunctionOnNextCall(pop_wrapper);
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| +pop_wrapper(array);
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| +%RunMicrotasks();
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| +assertEquals(1, array.length);
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| +assertEquals(7, v);
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| +pop_wrapper(array);
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| +%RunMicrotasks();
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| +assertEquals(0, array.length);
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| +assertEquals(8, v);
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| 
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