The Tor Browser / file comparison
comparison: js/src/jit-test/tests/saved-stacks/principals-01.js
js/src/jit-test/tests/saved-stacks/principals-01.js
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:f5b61e53ae27 |
|---|---|
| 1 // Test that SavedFrame.prototype.parent gives the next older frame whose | |
| 2 // principals are subsumed by the caller's principals. | |
| 3 | |
| 4 // Given a string of letters |expected|, say "abc", assert that the stack | |
| 5 // contains calls to a series of functions named by the next letter from | |
| 6 // the string, say a, b, and then c. Younger frames appear earlier in | |
| 7 // |expected| than older frames. | |
| 8 function check(expected, stack) { | |
| 9 print("check(" + uneval(expected) + ") against:\n" + stack); | |
| 10 count++; | |
| 11 | |
| 12 while (stack.length && expected.length) { | |
| 13 assertEq(stack.shift(), expected[0]); | |
| 14 expected = expected.slice(1); | |
| 15 } | |
| 16 | |
| 17 if (expected.length > 0) { | |
| 18 throw new Error("Missing frames for: " + expected); | |
| 19 } | |
| 20 if (stack.length > 0 && !stack.every(s => s === null)) { | |
| 21 throw new Error("Unexpected extra frame(s):\n" + stack); | |
| 22 } | |
| 23 } | |
| 24 | |
| 25 // Go from a SavedFrame linked list to an array of function display names. | |
| 26 function extract(stack) { | |
| 27 const results = []; | |
| 28 while (stack) { | |
| 29 results.push(stack.functionDisplayName); | |
| 30 stack = stack.parent; | |
| 31 } | |
| 32 return results; | |
| 33 } | |
| 34 | |
| 35 const low = newGlobal({ principal: 0 }); | |
| 36 const mid = newGlobal({ principal: 0xffff }); | |
| 37 const high = newGlobal({ principal: 0xfffff }); | |
| 38 | |
| 39 var count = 0; | |
| 40 | |
| 41 eval('function a() { check("a", extract(saveStack())); b(); }'); | |
| 42 low .eval('function b() { check("b", extract(saveStack())); c(); }'); | |
| 43 mid .eval('function c() { check("cba", extract(saveStack())); d(); }'); | |
| 44 high.eval('function d() { check("dcba", extract(saveStack())); e(); }'); | |
| 45 eval('function e() { check("edcba", extract(saveStack())); f(); }'); // no principal, so checks skipped | |
| 46 low .eval('function f() { check("fb", extract(saveStack())); g(); }'); | |
| 47 mid .eval('function g() { check("gfecba", extract(saveStack())); h(); }'); | |
| 48 high.eval('function h() { check("hgfedcba", extract(saveStack())); }'); | |
| 49 | |
| 50 // Make everyone's functions visible to each other, as needed. | |
| 51 b = low .b; | |
| 52 low .c = mid .c; | |
| 53 mid .d = high.d; | |
| 54 high.e = e; | |
| 55 f = low .f; | |
| 56 low .g = mid .g; | |
| 57 mid .h = high.h; | |
| 58 | |
| 59 low.check = mid.check = high.check = check; | |
| 60 | |
| 61 // They each must have their own extract so that CCWs don't mess up the | |
| 62 // principals when we ask for the parent property. | |
| 63 low. eval("" + extract); | |
| 64 mid. eval("" + extract); | |
| 65 high.eval("" + extract); | |
| 66 | |
| 67 // Kick the whole process off. | |
| 68 a(); | |
| 69 | |
| 70 assertEq(count, 8); |
