Maintainer	luke_lau@icloud.com
Stability	experimental
Portability	non-portable
Safe Haskell	None
Language	Haskell2010

Language.LSP.Test

Contents

Sessions
- Config
- Exceptions
Sending
Receiving
Utilities

Description

Provides the framework to start functionally testing Language Server Protocol servers. You should import Language.LSP.Types alongside this.

Synopsis

data Session a
runSession :: String -> ClientCapabilities -> FilePath -> Session a -> IO a
runSessionWithConfig :: SessionConfig -> String -> ClientCapabilities -> FilePath -> Session a -> IO a
runSessionWithHandles :: Handle -> Handle -> SessionConfig -> ClientCapabilities -> FilePath -> Session a -> IO a
data SessionConfig = SessionConfig {
- messageTimeout :: Int
- logStdErr :: Bool
- logMessages :: Bool
- logColor :: Bool
- lspConfig :: Maybe Value
- ignoreLogNotifications :: Bool
- initialWorkspaceFolders :: Maybe [WorkspaceFolder]
}
defaultConfig :: SessionConfig
fullCaps :: ClientCapabilities
data SessionException
- = Timeout (Maybe FromServerMessage)
- | NoContentLengthHeader
- | UnexpectedMessage String FromServerMessage
- | ReplayOutOfOrder FromServerMessage [FromServerMessage]
- | UnexpectedDiagnostics
- | IncorrectApplyEditRequest String
- | UnexpectedResponseError SomeLspId ResponseError
- | UnexpectedServerTermination
- | IllegalInitSequenceMessage FromServerMessage
- | MessageSendError Value IOError
anySessionException :: SessionException -> Bool
withTimeout :: Int -> Session a -> Session a
request :: SClientMethod m -> MessageParams m -> Session (ResponseMessage m)
request_ :: SClientMethod (m :: Method FromClient Request) -> MessageParams m -> Session ()
sendRequest :: SClientMethod m -> MessageParams m -> Session (LspId m)
sendNotification :: SClientMethod (m :: Method FromClient Notification) -> MessageParams m -> Session ()
sendResponse :: ToJSON (ResponseResult m) => ResponseMessage m -> Session ()
satisfy :: (FromServerMessage -> Bool) -> Session FromServerMessage
satisfyMaybe :: (FromServerMessage -> Maybe a) -> Session a
message :: SServerMethod m -> Session (ServerMessage m)
response :: SMethod (m :: Method FromClient Request) -> Session (ResponseMessage m)
responseForId :: SMethod (m :: Method FromClient Request) -> LspId m -> Session (ResponseMessage m)
customRequest :: Text -> Session (ServerMessage (CustomMethod :: Method FromServer Request))
customNotification :: Text -> Session (ServerMessage (CustomMethod :: Method FromServer Notification))
anyRequest :: Session FromServerMessage
anyResponse :: Session FromServerMessage
anyNotification :: Session FromServerMessage
anyMessage :: Session FromServerMessage
loggingNotification :: Session FromServerMessage
publishDiagnosticsNotification :: Session (Message TextDocumentPublishDiagnostics)
initializeResponse :: Session (ResponseMessage Initialize)
createDoc :: FilePath -> Text -> Text -> Session TextDocumentIdentifier
openDoc :: FilePath -> Text -> Session TextDocumentIdentifier
closeDoc :: TextDocumentIdentifier -> Session ()
changeDoc :: TextDocumentIdentifier -> [TextDocumentContentChangeEvent] -> Session ()
documentContents :: TextDocumentIdentifier -> Session Text
getDocumentEdit :: TextDocumentIdentifier -> Session Text
getDocUri :: FilePath -> Session Uri
getVersionedDoc :: TextDocumentIdentifier -> Session VersionedTextDocumentIdentifier
getDocumentSymbols :: TextDocumentIdentifier -> Session (Either [DocumentSymbol] [SymbolInformation])
waitForDiagnostics :: Session [Diagnostic]
waitForDiagnosticsSource :: String -> Session [Diagnostic]
noDiagnostics :: Session ()
getCurrentDiagnostics :: TextDocumentIdentifier -> Session [Diagnostic]
getIncompleteProgressSessions :: Session (Set ProgressToken)
executeCommand :: Command -> Session ()
getCodeActions :: TextDocumentIdentifier -> Range -> Session [Command |? CodeAction]
getAllCodeActions :: TextDocumentIdentifier -> Session [Command |? CodeAction]
executeCodeAction :: CodeAction -> Session ()
getCompletions :: TextDocumentIdentifier -> Position -> Session [CompletionItem]
getReferences :: TextDocumentIdentifier -> Position -> Bool -> Session (List Location)
getDeclarations :: TextDocumentIdentifier -> Position -> Session ([Location] |? [LocationLink])
getDefinitions :: TextDocumentIdentifier -> Position -> Session ([Location] |? [LocationLink])
getTypeDefinitions :: TextDocumentIdentifier -> Position -> Session ([Location] |? [LocationLink])
getImplementations :: TextDocumentIdentifier -> Position -> Session ([Location] |? [LocationLink])
rename :: TextDocumentIdentifier -> Position -> String -> Session ()
getHover :: TextDocumentIdentifier -> Position -> Session (Maybe Hover)
getHighlights :: TextDocumentIdentifier -> Position -> Session (List DocumentHighlight)
formatDoc :: TextDocumentIdentifier -> FormattingOptions -> Session ()
formatRange :: TextDocumentIdentifier -> FormattingOptions -> Range -> Session ()
applyEdit :: TextDocumentIdentifier -> TextEdit -> Session VersionedTextDocumentIdentifier
getCodeLenses :: TextDocumentIdentifier -> Session [CodeLens]
prepareCallHierarchy :: CallHierarchyPrepareParams -> Session [CallHierarchyItem]
incomingCalls :: CallHierarchyIncomingCallsParams -> Session [CallHierarchyIncomingCall]
outgoingCalls :: CallHierarchyOutgoingCallsParams -> Session [CallHierarchyOutgoingCall]
getSemanticTokens :: TextDocumentIdentifier -> Session (Maybe SemanticTokens)
getRegisteredCapabilities :: Session [SomeRegistration]

Sessions

data Session a Source #

A session representing one instance of launching and connecting to a server.

You can send and receive messages to the server within Session via message, sendRequest and sendNotification.

Instances

Instances details

Monad Session Source #
Instance details Defined in Language.LSP.Test.Session Methods (>>=) :: Session a -> (a -> Session b) -> Session b # (>>) :: Session a -> Session b -> Session b # return :: a -> Session a #
Functor Session Source #
Instance details Defined in Language.LSP.Test.Session Methods fmap :: (a -> b) -> Session a -> Session b # (<$) :: a -> Session b -> Session a #
MonadFail Session Source #
Instance details Defined in Language.LSP.Test.Session Methods fail :: String -> Session a #
Applicative Session Source #
Instance details Defined in Language.LSP.Test.Session Methods pure :: a -> Session a # (<>) :: Session (a -> b) -> Session a -> Session b # liftA2 :: (a -> b -> c) -> Session a -> Session b -> Session c # (>) :: Session a -> Session b -> Session b # (<*) :: Session a -> Session b -> Session a #
Alternative Session Source #
Instance details Defined in Language.LSP.Test.Session Methods empty :: Session a # (<\|>) :: Session a -> Session a -> Session a # some :: Session a -> Session [a] # many :: Session a -> Session [a] #
MonadIO Session Source #
Instance details Defined in Language.LSP.Test.Session Methods liftIO :: IO a -> Session a #

runSession Source #

Arguments

:: String	The command to run the server.
-> ClientCapabilities	The capabilities that the client should declare.
-> FilePath	The filepath to the root directory for the session.
-> Session a	The session to run.
-> IO a

Starts a new session.

runSession "hie" fullCaps "path/to/root/dir" $ do
  doc <- openDoc "Desktop/simple.hs" "haskell"
  diags <- waitForDiagnostics
  let pos = Position 12 5
      params = TextDocumentPositionParams doc
  hover <- request STextdocumentHover params

runSessionWithConfig Source #

Arguments

:: SessionConfig	Configuration options for the session.
-> String	The command to run the server.
-> ClientCapabilities	The capabilities that the client should declare.
-> FilePath	The filepath to the root directory for the session.
-> Session a	The session to run.
-> IO a

Starts a new session with a custom configuration.

runSessionWithHandles Source #

Arguments

:: Handle	The input handle
-> Handle	The output handle
-> SessionConfig
-> ClientCapabilities	The capabilities that the client should declare.
-> FilePath	The filepath to the root directory for the session.
-> Session a	The session to run.
-> IO a

Starts a new session, using the specified handles to communicate with the server. You can use this to host the server within the same process. An example with lsp might look like:

(hinRead, hinWrite) <- createPipe
(houtRead, houtWrite) <- createPipe

forkIO $ void $ runServerWithHandles hinRead houtWrite serverDefinition
runSessionWithHandles hinWrite houtRead defaultConfig fullCaps "." $ do
  -- ...

Config

data SessionConfig Source #

Stuff you can configure for a Session.

Constructors

SessionConfig

Fields

messageTimeout :: Int
Maximum time to wait for a message in seconds, defaults to 60.
logStdErr :: Bool
Redirect the server's stderr to this stdout, defaults to False. Can be overriden with LSP_TEST_LOG_STDERR.
logMessages :: Bool
Trace the messages sent and received to stdout, defaults to False. Can be overriden with the environment variable LSP_TEST_LOG_MESSAGES.
logColor :: Bool
Add ANSI color to the logged messages, defaults to True.
lspConfig :: Maybe Value
The initial LSP config as JSON value, defaults to Nothing.
ignoreLogNotifications :: Bool
Whether or not to ignore ShowMessageNotification and LogMessageNotification, defaults to False.
Since: 0.9.0.0
initialWorkspaceFolders :: Maybe [WorkspaceFolder]
The initial workspace folders to send in the initialize request. Defaults to Nothing.

Instances

Instances details

Default SessionConfig Source #
Instance details Defined in Language.LSP.Test.Session Methods def :: SessionConfig #

defaultConfig :: SessionConfig Source #

The configuration used in runSession.

fullCaps :: ClientCapabilities #

Capabilities for full conformance to the current (v3.15) LSP specification.

Exceptions

data SessionException Source #

An exception that can be thrown during a Session

Instances

Instances details

Eq SessionException Source #
Instance details Defined in Language.LSP.Test.Exceptions Methods (==) :: SessionException -> SessionException -> Bool # (/=) :: SessionException -> SessionException -> Bool #
Show SessionException Source #
Instance details Defined in Language.LSP.Test.Exceptions Methods showsPrec :: Int -> SessionException -> ShowS # show :: SessionException -> String # showList :: [SessionException] -> ShowS #
Exception SessionException Source #
Instance details Defined in Language.LSP.Test.Exceptions Methods toException :: SessionException -> SomeException # fromException :: SomeException -> Maybe SessionException # displayException :: SessionException -> String #

anySessionException :: SessionException -> Bool Source #

A predicate that matches on any SessionException

withTimeout :: Int -> Session a -> Session a Source #

Execute a block f that will throw a Timeout exception after duration seconds. This will override the global timeout for waiting for messages to arrive defined in SessionConfig.

Sending

request :: SClientMethod m -> MessageParams m -> Session (ResponseMessage m) Source #

Sends a request to the server and waits for its response. Will skip any messages in between the request and the response rsp <- request STextDocumentDocumentSymbol params Note: will skip any messages in between the request and the response.

request_ :: SClientMethod (m :: Method FromClient Request) -> MessageParams m -> Session () Source #

The same as sendRequest, but discard the response.

sendRequest Source #

Arguments

:: SClientMethod m	The request method.
-> MessageParams m	The request parameters.
-> Session (LspId m)	The id of the request that was sent.

Sends a request to the server. Unlike request, this doesn't wait for the response.

sendNotification Source #

Arguments

:: SClientMethod (m :: Method FromClient Notification)	The notification method.
-> MessageParams m	The notification parameters.
-> Session ()

Sends a notification to the server.

sendResponse :: ToJSON (ResponseResult m) => ResponseMessage m -> Session () Source #

Sends a response to the server.

Receiving

To receive a message, specify the method of the message to expect:

msg1 <- message SWorkspaceApplyEdit
msg2 <- message STextDocumentHover

Session is actually just a parser that operates on messages under the hood. This means that you can create and combine parsers to match specific sequences of messages that you expect.

For example, if you wanted to match either a definition or references request:

defOrImpl = message STextDocumentDefinition
         <|> message STextDocumentReferences

If you wanted to match any number of telemetry notifications immediately followed by a response:

logThenDiags =
 skipManyTill (message STelemetryEvent)
              anyResponse

satisfy :: (FromServerMessage -> Bool) -> Session FromServerMessage Source #

Consumes and returns the next message, if it satisfies the specified predicate.

Since: 0.5.2.0

satisfyMaybe :: (FromServerMessage -> Maybe a) -> Session a Source #

Consumes and returns the result of the specified predicate if it returns Just.

Since: 0.6.1.0

message :: SServerMethod m -> Session (ServerMessage m) Source #

Matches a request or a notification coming from the server. Doesn't match Custom Messages

response :: SMethod (m :: Method FromClient Request) -> Session (ResponseMessage m) Source #

Matches a response coming from the server.

responseForId :: SMethod (m :: Method FromClient Request) -> LspId m -> Session (ResponseMessage m) Source #

Like response, but matches a response for a specific id.

customRequest :: Text -> Session (ServerMessage (CustomMethod :: Method FromServer Request)) Source #

customNotification :: Text -> Session (ServerMessage (CustomMethod :: Method FromServer Notification)) Source #

anyRequest :: Session FromServerMessage Source #

Matches if the message is a request.

anyResponse :: Session FromServerMessage Source #

Matches if the message is a response.

anyNotification :: Session FromServerMessage Source #

Matches if the message is a notification.

anyMessage :: Session FromServerMessage Source #

Matches any type of message.

loggingNotification :: Session FromServerMessage Source #

Matches if the message is a log message notification or a show message notification/request.

publishDiagnosticsNotification :: Session (Message TextDocumentPublishDiagnostics) Source #

Matches a TextDocumentPublishDiagnostics (textDocument/publishDiagnostics) notification.

Utilities

Quick helper functions for common tasks.

Initialization

initializeResponse :: Session (ResponseMessage Initialize) Source #

Returns the initialize response that was received from the server. The initialize requests and responses are not included the session, so if you need to test it use this.

Documents

createDoc Source #

Arguments

:: FilePath	The path to the document to open, relative to the root directory.
-> Text	The text document's language identifier, e.g. `"haskell"`.
-> Text	The content of the text document to create.
-> Session TextDocumentIdentifier	The identifier of the document just created.

Creates a new text document. This is different from openDoc as it sends a workspace/didChangeWatchedFiles notification letting the server know that a file was created within the workspace, __provided that the server has registered for it__, and the file matches any patterns the server registered for. It does not actually create a file on disk, but is useful for convincing the server that one does exist.

Since: 11.0.0.0

openDoc :: FilePath -> Text -> Session TextDocumentIdentifier Source #

Opens a text document that exists on disk, and sends a textDocument/didOpen notification to the server.

closeDoc :: TextDocumentIdentifier -> Session () Source #

Closes a text document and sends a textDocument/didOpen notification to the server.

changeDoc :: TextDocumentIdentifier -> [TextDocumentContentChangeEvent] -> Session () Source #

Changes a text document and sends a textDocument/didOpen notification to the server.

documentContents :: TextDocumentIdentifier -> Session Text Source #

The current text contents of a document.

getDocumentEdit :: TextDocumentIdentifier -> Session Text Source #

Parses an ApplyEditRequest, checks that it is for the passed document and returns the new content

getDocUri :: FilePath -> Session Uri Source #

Gets the Uri for the file corrected to the session directory.

getVersionedDoc :: TextDocumentIdentifier -> Session VersionedTextDocumentIdentifier Source #

Adds the current version to the document, as tracked by the session.

Symbols

getDocumentSymbols :: TextDocumentIdentifier -> Session (Either [DocumentSymbol] [SymbolInformation]) Source #

Returns the symbols in a document.

Diagnostics

waitForDiagnostics :: Session [Diagnostic] Source #

Waits for diagnostics to be published and returns them.

waitForDiagnosticsSource :: String -> Session [Diagnostic] Source #

The same as waitForDiagnostics, but will only match a specific $sel:_source:Diagnostic.

noDiagnostics :: Session () Source #

Expects a PublishDiagnosticsNotification and throws an UnexpectedDiagnostics exception if there are any diagnostics returned.

getCurrentDiagnostics :: TextDocumentIdentifier -> Session [Diagnostic] Source #

Returns the current diagnostics that have been sent to the client. Note that this does not wait for more to come in.

getIncompleteProgressSessions :: Session (Set ProgressToken) Source #

Returns the tokens of all progress sessions that have started but not yet ended.

Commands

executeCommand :: Command -> Session () Source #

Executes a command.

Code Actions

getCodeActions :: TextDocumentIdentifier -> Range -> Session [Command |? CodeAction] Source #

Returns the code actions in the specified range.

getAllCodeActions :: TextDocumentIdentifier -> Session [Command |? CodeAction] Source #

Returns all the code actions in a document by querying the code actions at each of the current diagnostics' positions.

executeCodeAction :: CodeAction -> Session () Source #

Executes a code action. Matching with the specification, if a code action contains both an edit and a command, the edit will be applied first.

Completions

getCompletions :: TextDocumentIdentifier -> Position -> Session [CompletionItem] Source #

Returns the completions for the position in the document.

References

getReferences Source #

Arguments

:: TextDocumentIdentifier	The document to lookup in.
-> Position	The position to lookup.
-> Bool	Whether to include declarations as references.
-> Session (List Location)	The locations of the references.

Returns the references for the position in the document.

Definitions

getDeclarations Source #

Arguments

:: TextDocumentIdentifier	The document the term is in.
-> Position	The position the term is at.
-> Session ([Location] \|? [LocationLink])

Returns the declarations(s) for the term at the specified position.

getDefinitions Source #

Arguments

:: TextDocumentIdentifier	The document the term is in.
-> Position	The position the term is at.
-> Session ([Location] \|? [LocationLink])

Returns the definition(s) for the term at the specified position.

getTypeDefinitions Source #

Arguments

:: TextDocumentIdentifier	The document the term is in.
-> Position	The position the term is at.
-> Session ([Location] \|? [LocationLink])

Returns the type definition(s) for the term at the specified position.

getImplementations Source #

Arguments

:: TextDocumentIdentifier	The document the term is in.
-> Position	The position the term is at.
-> Session ([Location] \|? [LocationLink])

Returns the type definition(s) for the term at the specified position.

formatRange :: TextDocumentIdentifier -> FormattingOptions -> Range -> Session () Source #

Applies formatting to the specified range in a document.

incomingCalls :: CallHierarchyIncomingCallsParams -> Session [CallHierarchyIncomingCall] Source #

outgoingCalls :: CallHierarchyOutgoingCallsParams -> Session [CallHierarchyOutgoingCall] Source #

SemanticTokens

getSemanticTokens :: TextDocumentIdentifier -> Session (Maybe SemanticTokens) Source #

Pass a param and return the response from prepareCallHierarchy

Capabilities

getRegisteredCapabilities :: Session [SomeRegistration] Source #

Returns a list of capabilities that the server has requested to dynamically register during the Session.

Since: 0.11.0.0

Sessions

Instances

Config

Instances

Exceptions

Instances

Sending

Receiving

Utilities

Initialization

Documents

Symbols

Diagnostics

Commands

Code Actions

Completions

References

Definitions

Renaming

Hover

Highlights

Formatting

Edits

Code lenses

Call hierarchy

SemanticTokens

Capabilities

Timeout (Maybe FromServerMessage)
NoContentLengthHeader
UnexpectedMessage String FromServerMessage
ReplayOutOfOrder FromServerMessage [FromServerMessage]
UnexpectedDiagnostics
IncorrectApplyEditRequest String
UnexpectedResponseError SomeLspId ResponseError
UnexpectedServerTermination
IllegalInitSequenceMessage FromServerMessage
MessageSendError Value IOError