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Tests that are blocked for 3 second waitting for the server to exit #4152

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soulomoon opened this issue Mar 25, 2024 · 4 comments
Closed

Tests that are blocked for 3 second waitting for the server to exit #4152

soulomoon opened this issue Mar 25, 2024 · 4 comments
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component: lsp flaky test type: bug Something isn't right: doesn't work as intended, documentation is missing/outdated, etc..

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@soulomoon
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soulomoon commented Mar 25, 2024 •
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We have some tests that are blocked for 3 second waitting for the shutdown of the server.
https://github.com/soulomoon/haskell-language-server/blob/693f2a13fdc9319ed4f85d1ac7e2c45548888a29/hls-test-utils/src/Test/Hls.hs#L644-L645

For example in this test
https://github.com/soulomoon/haskell-language-server/blob/693f2a13fdc9319ed4f85d1ac7e2c45548888a29/plugins/hls-refactor-plugin/test/Main.hs#L80

we can see the bug:

cabal test haskell-language-server:test:hls-refactor-plugin-tests --test-options="-p /refactor/"

My guess is that

The SMethod_Shutdown is sent to the server at the end of runSessionWithHandles
It seems for this case the shutdown handler SMethod_Shutdown is not set up even after runSessionWithHandles is done.
I added a sleep 0.1 to the test to wait for the setup, then the server is closed as normal.
@soulomoon soulomoon added type: bug Something isn't right: doesn't work as intended, documentation is missing/outdated, etc.. status: needs triage component: lsp flaky test and removed status: needs triage labels Mar 25, 2024
@soulomoon
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Running 1 test suites...
Test suite hls-refactor-plugin-tests: RUNNING...
refactor
  initialize response capabilities
       code action:     2024-03-25T18:02:48.974943Z | Info | Heap statistics are not enabled (RTS option -T is needed)
2024-03-25T18:02:48.979262Z | Info | Starting LSP server...
  If you are seeing this in a terminal, you probably should have run WITHOUT the --lsp option!
  PluginIds: [ ghcide-completions-1
             , ghcide-completions
             , ghcide-code-actions-bindings
             , ghcide-hover-and-symbols
             , ghcide-code-actions-type-signatures
             , test
             , ghcide-code-actions-fill-holes
             , block-command
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-core ]
2024-03-25T18:02:48.981857Z | Info | Starting server
2024-03-25T18:02:48.984059Z | Debug | LSP: set new config: {
  "cabalFormattingProvider": "cabal-gild",
  "checkParents": "CheckOnSave",
  "checkProject": true,
  "formattingProvider": "ormolu",
  "maxCompletions": 40,
  "plugin": {  }
}
2024-03-25T18:02:48.985261Z | Info | Started LSP server in 0.01s
2024-03-25T18:02:49.170888Z | Debug | ghc --print-libdir
2024-03-25T18:02:49.172139Z | Debug | Setting initial dynflags...
2024-03-25T18:02:49.172201Z | Debug | shouldRunSubset: True
2024-03-25T18:02:49.172318Z | Debug | Initializing exports map from hiedb
2024-03-25T18:02:49.172404Z | Info | Registering IDE configuration: IdeConfiguration {workspaceFolders = fromList [NormalizedUri 1509901739996420084 "file:///private/var/folders/36/_743psv11gv2wrj9dclrpd500000gn/T/extra-dir-67437986947"], clientSettings = hashed (Just (Object (fromList [("haskell",Object (fromList [("cabalFormattingProvider",String "cabal-gild"),("checkParents",String "CheckOnSave"),("checkProject",Bool True),("formattingProvider",String "ormolu"),("maxCompletions",Number 40.0),("plugin",Object (fromList []))]))])))}
2024-03-25T18:02:49.173349Z | Debug | Received shutdown message
2024-03-25T18:02:49.173682Z | Debug | LSP: set new config: {
  "cabalFormattingProvider": "cabal-gild",
  "checkParents": "CheckOnSave",
  "checkProject": true,
  "formattingProvider": "ormolu",
  "maxCompletions": 40,
  "plugin": {  }
}
2024-03-25T18:02:49.173755Z | Debug | Configuration changed: Config {checkParents = CheckOnSave, checkProject = True, formattingProvider = "ormolu", cabalFormattingProvider = "cabal-gild", maxCompletions = 40, plugins = fromList []}
2024-03-25T18:02:49.178554Z | Info | Reactor thread stopped
Server does not exit in 3s, canceling the async task...
Finishing canceling (took 0.00ss)
                        OK
       execute command: OK

All 2 tests passed (3.21s)
Test suite hls-refactor-plugin-tests: PASS
Test suite logged to:
/Volumes/src/haskell-language-server/dist-newstyle/build/aarch64-osx/ghc-9.8.2/haskell-language-server-2.7.0.0/t/hls-refactor-plugin-tests/test/haskell-language-server-2.7.0.0-hls-refactor-plugin-tests.log
1 of 1 test suites (1 of 1 test cases) passed.

vs

❯ HLS_TEST_LOG_STDERR=1 cabal test haskell-language-server:test:hls-refactor-plugin-tests --test-options="-p /refactor/"
Build profile: -w ghc-9.8.2 -O1
In order, the following will be built (use -v for more details):
 - haskell-language-server-2.7.0.0 (test:hls-refactor-plugin-tests) (ephemeral targets)
Preprocessing test suite 'hls-refactor-plugin-tests' for haskell-language-server-2.7.0.0..
Building test suite 'hls-refactor-plugin-tests' for haskell-language-server-2.7.0.0..
Running 1 test suites...
Test suite hls-refactor-plugin-tests: RUNNING...
refactor
  initialize response capabilities
       code action:     2024-03-25T18:01:49.861169Z | Info | Heap statistics are not enabled (RTS option -T is needed)
2024-03-25T18:01:49.877917Z | Info | Starting LSP server...
  If you are seeing this in a terminal, you probably should have run WITHOUT the --lsp option!
  PluginIds: [ ghcide-completions-1
             , ghcide-completions
             , ghcide-code-actions-bindings
             , ghcide-hover-and-symbols
             , ghcide-code-actions-type-signatures
             , test
             , ghcide-code-actions-fill-holes
             , block-command
             , ghcide-type-lenses
             , ghcide-code-actions-imports-exports
             , ghcide-core ]
2024-03-25T18:01:49.881566Z | Info | Starting server
2024-03-25T18:01:49.891787Z | Debug | LSP: set new config: {
  "cabalFormattingProvider": "cabal-gild",
  "checkParents": "CheckOnSave",
  "checkProject": true,
  "formattingProvider": "ormolu",
  "maxCompletions": 40,
  "plugin": {  }
}
2024-03-25T18:01:49.897581Z | Info | Started LSP server in 0.02s
2024-03-25T18:01:50.231054Z | Debug | ghc --print-libdir
2024-03-25T18:01:50.233419Z | Debug | Setting initial dynflags...
2024-03-25T18:01:50.233462Z | Debug | shouldRunSubset: True
2024-03-25T18:01:50.233541Z | Debug | Initializing exports map from hiedb
2024-03-25T18:01:50.233820Z | Info | Registering IDE configuration: IdeConfiguration {workspaceFolders = fromList [NormalizedUri (-3873774377856205578) "file:///private/var/folders/36/_743psv11gv2wrj9dclrpd500000gn/T/extra-dir-54275890947"], clientSettings = hashed (Just (Object (fromList [("haskell",Object (fromList [("cabalFormattingProvider",String "cabal-gild"),("checkParents",String "CheckOnSave"),("checkProject",Bool True),("formattingProvider",String "ormolu"),("maxCompletions",Number 40.0),("plugin",Object (fromList []))]))])))}
2024-03-25T18:01:50.243506Z | Debug | Shake session initialized
2024-03-25T18:01:50.243528Z | Debug | Done initializing exports map from hiedb. Size: 0
2024-03-25T18:01:50.337029Z | Debug | Received shutdown message
2024-03-25T18:01:50.337201Z | Debug | Finished build session
AsyncCancelled
2024-03-25T18:01:50.337316Z | Debug | LSP: set new config: {
  "cabalFormattingProvider": "cabal-gild",
  "checkParents": "CheckOnSave",
  "checkProject": true,
  "formattingProvider": "ormolu",
  "maxCompletions": 40,
  "plugin": {  }
}
2024-03-25T18:01:50.338164Z | Info | Reactor thread stopped
2024-03-25T18:01:50.338384Z | Debug | Configuration changed: Config {checkParents = CheckOnSave, checkProject = True, formattingProvider = "ormolu", cabalFormattingProvider = "cabal-gild", maxCompletions = 40, plugins = fromList []}
2024-03-25T18:01:50.338507Z | Debug | Restarting build session due to config change
Action Queue: []
Keys: [GetClientSettings; ]
Aborting previous build session took 0.00s
2024-03-25T18:01:50.338942Z | Debug | Received exit message
                        OK
       execute command: OK

All 2 tests passed (0.49s)
Test suite hls-refactor-plugin-tests: PASS
Test suite logged to:
/Volumes/src/haskell-language-server/dist-newstyle/build/aarch64-osx/ghc-9.8.2/haskell-language-server-2.7.0.0/t/hls-refactor-plugin-tests/test/haskell-language-server-2.7.0.0-hls-refactor-plugin-tests.log
1 of 1 test suites (1 of 1 test cases) passed.

@soulomoon
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soulomoon commented Mar 25, 2024 •
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It is because setSomethingModified is called after shutdown. It hangs in the setSomethingModified during configuration change. It is blocking the further handling of Exit, the exit is sent and never received.
I am working out a solution to avoid the situation.

setSomethingModified is called after the shutdown. We can put configuration change into the reactor thread to avoid the situation.

@soulomoon soulomoon changed the title Tests that are blocked for 3 second waitting for the server to shutdown Tests that are blocked for 3 second waitting for the server to exit Mar 25, 2024
@soulomoon soulomoon mentioned this issue Mar 25, 2024
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This was referenced Apr 9, 2024
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@soulomoon
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soulomoon commented Apr 13, 2024 •
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It should be fixed when the new lsp realease with haskell/lsp#567 merged

@soulomoon
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Fixed by #4166

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Fix hanging after exit is sent #4152 soulomoon/haskell-language-server
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