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comparison: js/src/jit-test/tests/saved-stacks/principals-02.js
js/src/jit-test/tests/saved-stacks/principals-02.js
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| -1:000000000000 | 0:a3f73dcde02e |
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| 1 // Test that SavedFrame.prototype.toString only shows frames whose principal is | |
| 2 // subsumed by the caller's principal. | |
| 3 | |
| 4 var count = 0; | |
| 5 | |
| 6 // Given a string of letters |expected|, say "abc", assert that the stack | |
| 7 // contains calls to a series of functions named by the next letter from | |
| 8 // the string, say a, b, and then c. Younger frames appear earlier in | |
| 9 // |expected| than older frames. | |
| 10 function check(expected, stack) { | |
| 11 print("check(" + uneval(expected) + ") against:\n" + stack); | |
| 12 count++; | |
| 13 | |
| 14 // Extract only the function names from the stack trace. Omit the frames | |
| 15 // for the top-level evaluation, if it is present. | |
| 16 const frames = stack | |
| 17 .split("\n") | |
| 18 .filter(f => f.match(/^.@/)) | |
| 19 .map(f => f.replace(/@.*$/g, "")); | |
| 20 | |
| 21 // Check the function names against the expected sequence. | |
| 22 assertEq(frames.length, expected.length); | |
| 23 for (var i = 0; i < expected.length; i++) { | |
| 24 assertEq(frames[i], expected[i]); | |
| 25 } | |
| 26 } | |
| 27 | |
| 28 var low = newGlobal({ principal: 0 }); | |
| 29 var mid = newGlobal({ principal: 0xffff }); | |
| 30 var high = newGlobal({ principal: 0xfffff }); | |
| 31 | |
| 32 eval('function a() { check("a", saveStack().toString()); b(); }'); | |
| 33 low .eval('function b() { check("b", saveStack().toString()); c(); }'); | |
| 34 mid .eval('function c() { check("cba", saveStack().toString()); d(); }'); | |
| 35 high.eval('function d() { check("dcba", saveStack().toString()); e(); }'); | |
| 36 eval('function e() { check("edcba", saveStack().toString()); f(); }'); // no principal, so checks skipped | |
| 37 low .eval('function f() { check("fb", saveStack().toString()); g(); }'); | |
| 38 mid .eval('function g() { check("gfecba", saveStack().toString()); h(); }'); | |
| 39 high.eval('function h() { check("hgfedcba", saveStack().toString()); }'); | |
| 40 | |
| 41 // Make everyone's functions visible to each other, as needed. | |
| 42 b = low .b; | |
| 43 low .c = mid .c; | |
| 44 mid .d = high.d; | |
| 45 high.e = e; | |
| 46 f = low .f; | |
| 47 low .g = mid .g; | |
| 48 mid .h = high.h; | |
| 49 | |
| 50 low.check = mid.check = high.check = check; | |
| 51 | |
| 52 // Kick the whole process off. | |
| 53 a(); | |
| 54 | |
| 55 assertEq(count, 8); | |
| 56 |
