The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/ecma_5/Array/reverse-order-of-low-high-accesses.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,88 @@
     1.4 +/*
     1.5 + * Any copyright is dedicated to the Public Domain.
     1.6 + * http://creativecommons.org/licenses/publicdomain/
     1.7 + */
     1.8 +
     1.9 +//-----------------------------------------------------------------------------
    1.10 +var BUGNUMBER = 858677;
    1.11 +var summary =
    1.12 +  "[].reverse should swap elements low to high using accesses to low " +
    1.13 +  "elements, then accesses to high elements";
    1.14 +
    1.15 +print(BUGNUMBER + ": " + summary);
    1.16 +
    1.17 +/**************
    1.18 + * BEGIN TEST *
    1.19 + **************/
    1.20 +
    1.21 +var observed = [];
    1.22 +
    1.23 +// (0, 7) hits the lowerExists/upperExists case.
    1.24 +// (1, 6) hits the !lowerExists/upperExists case.
    1.25 +// (2, 5) hits the lowerExists/!upperExists case.
    1.26 +// (3, 4) hits the !lowerExists/!upperExists case.
    1.27 +//
    1.28 +// It'd be a good idea to have a second version of this test at some point
    1.29 +// where the "array" being reversed is a proxy, to detect proper ordering of
    1.30 +// getproperty, hasproperty, setproperty into a hole, and deleteproperty from a
    1.31 +// non-configurable element.  But at present our Array.prototype.reverse
    1.32 +// implementation probably doesn't conform fully to all this (because our
    1.33 +// internal MOP is still slightly off), so punt for now.
    1.34 +var props =
    1.35 +  {
    1.36 +    0: {
    1.37 +      configurable: true,
    1.38 +      get: function() { observed.push("index 0 get"); return "index 0 get"; },
    1.39 +      set: function(v) { observed.push("index 0 set: " + v); }
    1.40 +    },
    1.41 +    /* 1: hole */
    1.42 +    2: {
    1.43 +      configurable: true,
    1.44 +      get: function() { observed.push("index 2 get"); return "index 2 get"; },
    1.45 +      set: function(v) { observed.push("index 2 set: " + v); }
    1.46 +    },
    1.47 +    /* 3: hole */
    1.48 +    /* 4: hole */
    1.49 +    /* 5: hole */
    1.50 +    6: {
    1.51 +      configurable: true,
    1.52 +      get: function() { observed.push("index 6 get"); return "index 6 get"; },
    1.53 +      set: function(v) { observed.push("index 6 set: " + v); }
    1.54 +    },
    1.55 +    7: {
    1.56 +      configurable: true,
    1.57 +      get: function() { observed.push("index 7 get"); return "index 7 get"; },
    1.58 +      set: function(v) { observed.push("index 7 set: " + v); }
    1.59 +    },
    1.60 +  };
    1.61 +
    1.62 +var arr = Object.defineProperties(new Array(8), props);
    1.63 +
    1.64 +arr.reverse();
    1.65 +
    1.66 +var expectedObserved =
    1.67 +  ["index 0 get", "index 7 get", "index 0 set: index 7 get", "index 7 set: index 0 get",
    1.68 +   "index 6 get",
    1.69 +   "index 2 get"
    1.70 +   /* nothing for 3/4 */];
    1.71 +print(observed);
    1.72 +// Do this before the assertions below futz even more with |observed|.
    1.73 +assertEq(observed.length, expectedObserved.length);
    1.74 +for (var i = 0; i < expectedObserved.length; i++)
    1.75 +  assertEq(observed[i], expectedObserved[i]);
    1.76 +
    1.77 +assertEq(arr[0], "index 0 get"); // no deletion, setting doesn't overwrite
    1.78 +assertEq(arr[1], "index 6 get"); // copies result of getter
    1.79 +assertEq(2 in arr, false); // deleted
    1.80 +assertEq(3 in arr, false); // never there
    1.81 +assertEq(4 in arr, false); // never there
    1.82 +assertEq(arr[5], "index 2 get"); // copies result of getter
    1.83 +assertEq(6 in arr, false); // deleted
    1.84 +assertEq(arr[7], "index 7 get"); // no deletion, setter doesn't overwrite
    1.85 +
    1.86 +/******************************************************************************/
    1.87 +
    1.88 +if (typeof reportCompare === "function")
    1.89 +  reportCompare(true, true);
    1.90 +
    1.91 +print("Tests complete");