services/sync/tests/unit/test_utils_lock.js@6474c204b198 (annotated)
services/sync/tests/unit/test_utils_lock.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | _("Make sure lock prevents calling with a shared lock"); |
| michael@0 | 2 | Cu.import("resource://services-sync/util.js"); |
| michael@0 | 3 | |
| michael@0 | 4 | // Utility that we only use here. |
| michael@0 | 5 | |
| michael@0 | 6 | function do_check_begins(thing, startsWith) { |
| michael@0 | 7 | if (!(thing && thing.indexOf && (thing.indexOf(startsWith) == 0))) |
| michael@0 | 8 | do_throw(thing + " doesn't begin with " + startsWith); |
| michael@0 | 9 | } |
| michael@0 | 10 | |
| michael@0 | 11 | function run_test() { |
| michael@0 | 12 | let ret, rightThis, didCall; |
| michael@0 | 13 | let state, lockState, lockedState, unlockState; |
| michael@0 | 14 | let obj = { |
| michael@0 | 15 | _lock: Utils.lock, |
| michael@0 | 16 | lock: function() { |
| michael@0 | 17 | lockState = ++state; |
| michael@0 | 18 | if (this._locked) { |
| michael@0 | 19 | lockedState = ++state; |
| michael@0 | 20 | return false; |
| michael@0 | 21 | } |
| michael@0 | 22 | this._locked = true; |
| michael@0 | 23 | return true; |
| michael@0 | 24 | }, |
| michael@0 | 25 | unlock: function() { |
| michael@0 | 26 | unlockState = ++state; |
| michael@0 | 27 | this._locked = false; |
| michael@0 | 28 | }, |
| michael@0 | 29 | |
| michael@0 | 30 | func: function() this._lock("Test utils lock", |
| michael@0 | 31 | function() { |
| michael@0 | 32 | rightThis = this == obj; |
| michael@0 | 33 | didCall = true; |
| michael@0 | 34 | return 5; |
| michael@0 | 35 | })(), |
| michael@0 | 36 | |
| michael@0 | 37 | throwy: function() this._lock("Test utils lock throwy", |
| michael@0 | 38 | function() { |
| michael@0 | 39 | rightThis = this == obj; |
| michael@0 | 40 | didCall = true; |
| michael@0 | 41 | this.throwy(); |
| michael@0 | 42 | })() |
| michael@0 | 43 | }; |
| michael@0 | 44 | |
| michael@0 | 45 | _("Make sure a normal call will call and return"); |
| michael@0 | 46 | rightThis = didCall = false; |
| michael@0 | 47 | state = 0; |
| michael@0 | 48 | ret = obj.func(); |
| michael@0 | 49 | do_check_eq(ret, 5); |
| michael@0 | 50 | do_check_true(rightThis); |
| michael@0 | 51 | do_check_true(didCall); |
| michael@0 | 52 | do_check_eq(lockState, 1); |
| michael@0 | 53 | do_check_eq(unlockState, 2); |
| michael@0 | 54 | do_check_eq(state, 2); |
| michael@0 | 55 | |
| michael@0 | 56 | _("Make sure code that calls locked code throws"); |
| michael@0 | 57 | ret = null; |
| michael@0 | 58 | rightThis = didCall = false; |
| michael@0 | 59 | try { |
| michael@0 | 60 | ret = obj.throwy(); |
| michael@0 | 61 | do_throw("throwy internal call should have thrown!"); |
| michael@0 | 62 | } |
| michael@0 | 63 | catch(ex) { |
| michael@0 | 64 | // Should throw an Error, not a string. |
| michael@0 | 65 | do_check_begins(ex, "Could not acquire lock"); |
| michael@0 | 66 | } |
| michael@0 | 67 | do_check_eq(ret, null); |
| michael@0 | 68 | do_check_true(rightThis); |
| michael@0 | 69 | do_check_true(didCall); |
| michael@0 | 70 | _("Lock should be called twice so state 3 is skipped"); |
| michael@0 | 71 | do_check_eq(lockState, 4); |
| michael@0 | 72 | do_check_eq(lockedState, 5); |
| michael@0 | 73 | do_check_eq(unlockState, 6); |
| michael@0 | 74 | do_check_eq(state, 6); |
| michael@0 | 75 | } |
