The Tor Browser: js/src/jit-test/tests/jaeger/inline/stringCharAt.js@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     2 assertEq("foo".charAt(-123), "");

     3 assertEq("foo".charAt(-1), "");

     4 assertEq("foo".charAt(0), "f");

     5 assertEq("foo".charAt(1), "o");

     6 assertEq("foo".charAt(2), "o");

     7 assertEq("foo".charAt(3.4), "");

     8 assertEq("foo".charAt(), "f");

     9 assertEq("".charAt(), "");

    10 assertEq("".charAt(0), "");

    11 assertEq("abc\u9123".charAt(3), "\u9123"); // char without unit string

    13 /* Inferred as string.charAt(int). */

    14 function charAt1(x) {

    15     return "abc".charAt(x);

    16 }

    17 assertEq(charAt1(-1), "");

    18 assertEq(charAt1(0), "a");

    19 assertEq(charAt1(1), "b");

    20 assertEq(charAt1(2), "c");

    21 assertEq(charAt1(3), "");

    22 assertEq(charAt1(1234), "");

    24 /* Inferred as string.charAt(double). */

    25 function charAt2(x) {

    26     return "abc".charAt(x);

    27 }

    28 assertEq(charAt2(-1.3), "");

    29 assertEq(charAt2(-0), "a");

    30 assertEq(charAt2(2), "c");

    31 assertEq(charAt2(2.3), "c");

    32 assertEq(charAt2(3.14), "");

    33 assertEq(charAt2(NaN), "a");

    35 /* Test ropes. */

    36 function charAt3(s, i) {

    37     var s2 = "abcdef" + s + "12345";

    38     return s2.charAt(i);

    39 }

    40 assertEq(charAt3("abcdef", 14), "3");

    41 assertEq(charAt3("a" + "b", 1), "b");

    42 assertEq(charAt3("abcdefg" + "hijklmnop", 10), "e");

    44 /* Other 'this'. */

    45 var arr = [1, 2];

    46 arr.charAt = String.prototype.charAt;

    47 assertEq(arr.charAt(1), ",");

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