1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit-test/tests/saved-stacks/principals-02.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,56 @@
1.4 +// Test that SavedFrame.prototype.toString only shows frames whose principal is
1.5 +// subsumed by the caller's principal.
1.6 +
1.7 +var count = 0;
1.8 +
1.9 +// Given a string of letters |expected|, say "abc", assert that the stack
1.10 +// contains calls to a series of functions named by the next letter from
1.11 +// the string, say a, b, and then c. Younger frames appear earlier in
1.12 +// |expected| than older frames.
1.13 +function check(expected, stack) {
1.14 + print("check(" + uneval(expected) + ") against:\n" + stack);
1.15 + count++;
1.16 +
1.17 + // Extract only the function names from the stack trace. Omit the frames
1.18 + // for the top-level evaluation, if it is present.
1.19 + const frames = stack
1.20 + .split("\n")
1.21 + .filter(f => f.match(/^.@/))
1.22 + .map(f => f.replace(/@.*$/g, ""));
1.23 +
1.24 + // Check the function names against the expected sequence.
1.25 + assertEq(frames.length, expected.length);
1.26 + for (var i = 0; i < expected.length; i++) {
1.27 + assertEq(frames[i], expected[i]);
1.28 + }
1.29 +}
1.30 +
1.31 +var low = newGlobal({ principal: 0 });
1.32 +var mid = newGlobal({ principal: 0xffff });
1.33 +var high = newGlobal({ principal: 0xfffff });
1.34 +
1.35 + eval('function a() { check("a", saveStack().toString()); b(); }');
1.36 +low .eval('function b() { check("b", saveStack().toString()); c(); }');
1.37 +mid .eval('function c() { check("cba", saveStack().toString()); d(); }');
1.38 +high.eval('function d() { check("dcba", saveStack().toString()); e(); }');
1.39 + eval('function e() { check("edcba", saveStack().toString()); f(); }'); // no principal, so checks skipped
1.40 +low .eval('function f() { check("fb", saveStack().toString()); g(); }');
1.41 +mid .eval('function g() { check("gfecba", saveStack().toString()); h(); }');
1.42 +high.eval('function h() { check("hgfedcba", saveStack().toString()); }');
1.43 +
1.44 +// Make everyone's functions visible to each other, as needed.
1.45 + b = low .b;
1.46 +low .c = mid .c;
1.47 +mid .d = high.d;
1.48 +high.e = e;
1.49 + f = low .f;
1.50 +low .g = mid .g;
1.51 +mid .h = high.h;
1.52 +
1.53 +low.check = mid.check = high.check = check;
1.54 +
1.55 +// Kick the whole process off.
1.56 +a();
1.57 +
1.58 +assertEq(count, 8);
1.59 +
