The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/debug/Environment-identity-01.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,40 @@
     1.4 +// The value of frame.environment is the same Environment object at different
     1.5 +// times within a single visit to a scope.
     1.6 +
     1.7 +var g = newGlobal();
     1.8 +var dbg = Debugger(g);
     1.9 +g.eval("function h() { debugger; }");
    1.10 +var hits, env;
    1.11 +dbg.onDebuggerStatement = function (hframe) {
    1.12 +    var frame = hframe.older;
    1.13 +    var e = frame.environment;
    1.14 +
    1.15 +    // frame.environment is at least cached from one moment to the next.
    1.16 +    assertEq(e, frame.environment);
    1.17 +
    1.18 +    // frame.environment is cached from statement to statement within a call frame.
    1.19 +    if (env === undefined)
    1.20 +        env = e;
    1.21 +    else
    1.22 +        assertEq(e, env);
    1.23 +
    1.24 +    hits++;
    1.25 +};
    1.26 +
    1.27 +hits = 0;
    1.28 +env = undefined;
    1.29 +g.eval("function f() { (function () { var i = 0; h(); var j = 2; h(); })(); }");
    1.30 +g.f();
    1.31 +assertEq(hits, 2);
    1.32 +
    1.33 +hits = 0;
    1.34 +env = undefined;
    1.35 +g.eval("function f2() { { let i = 0; h(); let j = 2; h(); } }");
    1.36 +g.f2();
    1.37 +assertEq(hits, 2);
    1.38 +
    1.39 +hits = 0;
    1.40 +env = undefined;
    1.41 +g.eval("function f3() { { let i; for (i = 0; i < 2; i++) h(); } }");
    1.42 +g.f3();
    1.43 +assertEq(hits, 2);