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// Check pops with various number of arguments.
(function() {
  var a = [];
  for (var i = 0; i < 7; i++) {
    a = [7, 6, 5, 4, 3, 2, 1];

    assertEquals(1, a.pop(), "1st pop");
    assertEquals(6, a.length, "length 1st pop");

    assertEquals(2, a.pop(1), "2nd pop");
    assertEquals(5, a.length, "length 2nd pop");

    assertEquals(3, a.pop(1, 2), "3rd pop");
    assertEquals(4, a.length, "length 3rd pop");

    assertEquals(4, a.pop(1, 2, 3), "4th pop");
    assertEquals(3, a.length, "length 4th pop");

    assertEquals(5, a.pop(), "5th pop");
    assertEquals(2, a.length, "length 5th pop");

    assertEquals(6, a.pop(), "6th pop");
    assertEquals(1, a.length, "length 6th pop");

    assertEquals(7, a.pop(), "7th pop");
    assertEquals(0, a.length, "length 7th pop");

    assertEquals(undefined, a.pop(), "8th pop");
    assertEquals(0, a.length, "length 8th pop");

    assertEquals(undefined, a.pop(1, 2, 3), "9th pop");
    assertEquals(0, a.length, "length 9th pop");
  }
})();