Fix Flash failure on CI test #2964
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## v0.x.x #2964 +/- ##
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+ Coverage 79.00% 80.16% +1.16%
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Files 209 202 -7
Lines 18586 18329 -257
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+ Hits 14683 14693 +10
+ Misses 3903 3636 -267
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All green! |
source/agora/test/Flash.d
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| @@ -1924,6 +1924,10 @@ unittest | |||
| network.clients[0].postTransaction(update_tx); | |||
| assert(!network.clients[0].hasTransactionHash(update_tx.hashFull())); | |||
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| // make the `charlie` node not to send `update tx 6` unintentionally | |||
| // with `allow_publish` set to `false`, which cause failure to this test | |||
| Thread.sleep(1.seconds); | |||
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I... Don't understand how that would solve the bug ?
Usually our test do:
a) Action
b) Test
c) Another action
d) Another test
Etc... Those "test" usually check a certain value (the state).
Whenever we have a timing issue, we place a sleep between an action and a test, allowing more time for the action to take effect (and change the state). This sleep is between a "Check" and an "Action", meaning it should not have any impact, unless a previous action has not completed by the time another action/test combo starts ?
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Let me explain why this would solve the bug.
This test expects that the calls, alice.setPublishEnable(false) and charlie.setPublishEnable(false), keep the update transaction from being published right after the fourth block is externalized. But in a failing situation, some time is delayed after the block is externalized, and the charlie.setPublishEnable(true) is called before charlie's call of publishing the update tx start, which results in the UTXO being already used which was supposed to be used by alice.
We could compare the logs of a succeeding situation and a failing situation as follows. The point is that sending the tx by charlie should be skipped in the normal situation.
Succeeding situation
2022-02-03 17:11:22,482 Info [agora.flash.Node] - Block #4 is externalized...
2022-02-03 17:11:22,483 Info [agora.flash.Channel] - Charlie: Update tx externalized(0x448d53) on height 4
2022-02-03 17:11:22,488 Info [agora.flash.Node] - Skipping publishing { inputs: [{ utxo: 0x1760ae909bfa48da9a19c5afc33640ab24ab791c1df7b4dcf34d59abcffe5c4a9e7e6d89c5c33bcf529002689a3b98f241c349cfffff36536e97d02f2804ec8e, unlock: 0x4903af0f1cf5ca5c00ce8008b0fa4995455a221c24c9e33d3465ac6c14114e310a4bebd1f4bac5a6c85a8b5749da0e01d617c518e4c23f45861cdf2bdf5da790370e010000000000000008060000000000000054, unlock_age: 0 }, { utxo: 0xaeb07e3b72cba7307957f0d776d00377e6b08760f4d8d679c4e17cc58a6071a1f8c91ded90d44742b1adeed208d81869d8c1529e232cc8c704ac4ce09b99c22a, unlock: 0x254f7660f3bed39bc636197ecaf321d35139cddda7db5cfa7294b0fcf32055021ae3a6dea515cdb1ee77a104048954b581c6470fc759538f7e4cb46e6da89bbe01, unlock_age: 0 }], outputs: [{ type: const(OutputType).Payment, lock: boa1xrc00kar2yqa3jzve9cm4cvuaa8duazkuwrygmqgpcuf0gqww8ye7ua9lkl, value: 594999999514200 }, { type: const(OutputType).Payment, lock: Lock(Script, 55200dadde3844d852b657dc946cd7d979e0b8882f0488d0e9184719a4241579863008070000000000000064545704030000005e203daf29f097ee46a48ffd19cb1cc4759f401cdf690214e447a88d4144b614f2f9080600000000000000645458), value: 10000 }], payload: [], lock_height: 0 }
2022-02-03 17:11:22,488 Info [agora.flash.Channel] - Charlie: Publishing update tx 6: 0xfe730c. Result: { status: Status.Accepted, reason: "" }
Failing situation
2022-01-28T02:49:34.7804380Z 2022-01-28 02:49:31,922 [32mInfo[0m [agora.flash.Node] - Block #4 is externalized...
2022-01-28T02:49:34.7805050Z 2022-01-28 02:49:31,925 [32mInfo[0m [agora.flash.Channel] - Charlie: Update tx externalized(0x448d53) on height 4
2022-01-28T02:49:34.7805700Z 2022-01-28 02:49:32,12 [32mInfo[0m [agora.flash.Channel] - Charlie: Publishing update tx 6: 0xfe730c. Result: { status: Status.Accepted, reason: "" }
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Do we really need to add |
We are gonna use the height for checking when states has changed.
The unittests in `agora.test.Flash` fails often on CI because there is a timing issue. Unittests expect `update_tx`s not to be sent as soon as a block is externalized when the `allow_publish` is set to `false`. But the `update_tx` is sent as soon as the `allow_publish` is to set `true` by calling `setPublishEnable`, which is not to be supposed to be sent.
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Modified the code after being reviewed and improved more on the tests about Flash. There was a timing issue where an @hewison-chris I don't think there's any variable being added to the production code, but I will look into more if you let me know about that. |
Sorry I didn't realize |
The unit tests in
agora.test.Flashfail often on CI because there isa timing issue. Unit tests expect
update_txs not to be sent as soon asa block is externalized when the
allow_publishis set tofalse. Butthe
update_txis sent as soon as theallow_publishis to settrueby calling
setPublishEnable, which is not to be supposed to be sent.Fixes #2425
The error log on CI was following,
2022-01-28T02:49:34.7716990Z 2022-01-28 02:49:32,15 �[32mInfo�[0m [agora.flash.Channel] - Alice: Publishing update tx 4: 0x5fdc75. Result: { status: Status.Rejected, reason: "Double spend comes with a less-than-acceptable fee increase" }This was because a
charlienode succeeded to send anupdatetx that has the same input as the above tx, but the tx should not be sent becauseallow_publishis thought to have afalsevalue at the very moment.