helpers

package
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 Go to latest Published: Sep 11, 2025 License: GPL-3.0 Imports: 32 Imported by: 0

Documentation

Overview

Package helpers provides testing utilities for API operations.

This package includes WebSocket test servers and helper functions for testing API endpoints, WebSocket communication, and JSON-RPC methods without requiring a full API server setup.

Example usage: 

func TestWebSocketAPI(t *testing.T) {
	// Create message handler
	handler := func(session *melody.Session, msg []byte) {
		session.Write([]byte(`{"response": "ok"}`))
	}

	// Create test WebSocket server
	server := helpers.NewWebSocketTestServer(t, handler)
	defer server.Close()

	// Connect and test
	client := server.NewClient(t)
	defer client.Close()

	err := client.SendMessage([]byte(`{"test": "message"}`))
	require.NoError(t, err)
}

For complete examples, see pkg/testing/examples/api_example_test.go

Package helpers provides testing utilities for database operations.

This package includes mock implementations of database interfaces and helper functions for setting up test databases with sqlmock. It enables testing database operations without requiring a real SQLite database.

Example usage: 

func TestDatabaseOperations(t *testing.T) {
	// Create mock database interfaces
	userDB := helpers.NewMockUserDBI()
	mediaDB := helpers.NewMockMediaDBI()

	// Set up expectations
	userDB.On("AddHistory", helpers.HistoryEntryMatcher()).Return(nil)

	// Use in your code
	err := MyFunction(userDB)

	// Verify expectations were met
	require.NoError(t, err)
	userDB.AssertExpectations(t)
}

For complete examples, see pkg/testing/examples/database_example_test.go

Package helpers provides testing utilities for filesystem operations.

This package includes in-memory filesystem implementations and helper functions for testing file operations without requiring real filesystem access. It uses afero for filesystem abstraction.

Example usage: 

func TestFileOperations(t *testing.T) {
	// Create in-memory filesystem
	fs := helpers.NewMemoryFS()

	// Create files and directories for testing
	fs.WriteFile("test.txt", []byte("content"))
	fs.MkdirAll("configs")

	// Create test configuration
	cfg, err := helpers.NewTestConfig(fs, "/tmp/config")
	require.NoError(t, err)

	// Use in your tests
	content, err := fs.ReadFile("test.txt")
	require.NoError(t, err)
	assert.Equal(t, "content", string(content))
}

For complete examples, see pkg/testing/examples/filesystem_example_test.go

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func AssertJSONRPCError 

func AssertJSONRPCError(t *testing.T, response *JSONRPCResponse, expectedCode int)

AssertJSONRPCError verifies a JSON-RPC response contains an error

func AssertJSONRPCSuccess 

func AssertJSONRPCSuccess(t *testing.T, response *JSONRPCResponse)

AssertJSONRPCSuccess verifies a JSON-RPC response was successful

func CreateTestContext 

func CreateTestContext(timeout time.Duration) (context.Context, context.CancelFunc)

CreateTestContext creates a context with timeout for testing

func ExpectHistoryInsert 

func ExpectHistoryInsert(mockDB sqlmock.Sqlmock, entry *database.HistoryEntry)

ExpectHistoryInsert sets up expectations for history insertion

func ExpectMappingInsert 

func ExpectMappingInsert(mockDB sqlmock.Sqlmock, mapping *database.Mapping)

ExpectMappingInsert sets up expectations for mapping insertion

func ExpectMappingQuery 

func ExpectMappingQuery(mockDB sqlmock.Sqlmock, id int64, mapping *database.Mapping)

ExpectMappingQuery sets up expectations for mapping query

func ExpectMediaSearch 

func ExpectMediaSearch(mockDB sqlmock.Sqlmock, results []database.SearchResult)

ExpectMediaSearch sets up expectations for media search queries

func ExpectTransactionBegin 

func ExpectTransactionBegin(mockDB sqlmock.Sqlmock)

ExpectTransactionBegin sets up expectations for transaction begin

func ExpectTransactionCommit 

func ExpectTransactionCommit(mockDB sqlmock.Sqlmock)

ExpectTransactionCommit sets up expectations for transaction commit

func ExpectTransactionRollback 

func ExpectTransactionRollback(mockDB sqlmock.Sqlmock)

ExpectTransactionRollback sets up expectations for transaction rollback

func GetBasicTestStructure 

func GetBasicTestStructure() map[string]any

GetBasicTestStructure returns a basic directory structure for testing

func GetComplexTestStructure 

func GetComplexTestStructure() map[string]any

GetComplexTestStructure returns a more complex directory structure for integration testing

func HistoryEntryMatcher 

func HistoryEntryMatcher() any

HistoryEntryMatcher returns a testify matcher for database.HistoryEntry. This matcher can be used to verify that AddHistory is called with appropriate data.

Example usage: 

userDB.On("AddHistory", helpers.HistoryEntryMatcher()).Return(nil)

func MappingMatcher 

func MappingMatcher() any

MappingMatcher returns a testify matcher for database.Mapping.

Example usage: 

userDB.On("AddMapping", helpers.MappingMatcher()).Return(nil)

func MediaMatcher 

func MediaMatcher() any

MediaMatcher returns a testify matcher for database.Media.

Example usage: 

mediaDB.On("InsertMedia", helpers.MediaMatcher()).Return(fixtures.SampleMedia()[0], nil)

func NewInMemoryMediaDB 

func NewInMemoryMediaDB(t *testing.T) (db *mediadb.MediaDB, cleanup func())

func NewInMemoryUserDB 

func NewInMemoryUserDB(t *testing.T) (db *userdb.UserDB, cleanup func())

func NewSQLMock 

func NewSQLMock() (*sql.DB, sqlmock.Sqlmock, error)

NewSQLMock creates a new sqlmock database and mock for raw SQL testing. This is an alias for SetupSQLMock for consistency with other constructor functions.

Example usage: 

func TestRawSQL(t *testing.T) {
	db, mock, err := helpers.NewSQLMock()
	require.NoError(t, err)
	defer db.Close()

	mock.ExpectQuery("SELECT (.+) FROM users").
		WillReturnRows(sqlmock.NewRows([]string{"id", "name"}).AddRow(1, "Test"))

	// Test your SQL code
	rows, err := db.Query("SELECT id, name FROM users")
	require.NoError(t, err)
	defer rows.Close()

	assert.NoError(t, mock.ExpectationsWereMet())
}

func NewTestConfig 

func NewTestConfig(fs *FSHelper, configDir string) (*config.Instance, error)

NewTestConfig creates a config instance for testing using an in-memory filesystem

func NewTestConfigWithPort 

func NewTestConfigWithPort(_ *FSHelper, configDir string, port int) (*config.Instance, error)

NewTestConfigWithPort creates a config instance for testing with a specific API port

func SearchResultMatcher 

func SearchResultMatcher() any

SearchResultMatcher returns a testify matcher for database.SearchResult.

Example usage: 

mediaDB.On("SearchMedia", helpers.TextMatcher()).
	Return([]database.SearchResult{fixtures.SampleSearchResults()[0]}, nil)

func SystemMatcher 

func SystemMatcher() any

SystemMatcher returns a testify matcher for database.System.

Example usage: 

platform.On("LaunchMedia", helpers.MediaMatcher(), helpers.SystemMatcher()).Return(nil)

func TextMatcher 

func TextMatcher() any

TextMatcher returns a testify matcher for string text matching. Useful for matching media names, token text, etc.

Example usage: 

mediaDB.On("GetMediaByText", helpers.TextMatcher()).Return(fixtures.SampleMedia()[0], nil)

Types

type FSHelper 

type FSHelper struct {
	Fs afero.Fs
}

FSHelper provides utilities for filesystem mocking in tests

func NewMemoryFS 

func NewMemoryFS() *FSHelper

NewMemoryFS creates a new in-memory filesystem for testing

func NewOSFS 

func NewOSFS() *FSHelper

NewOSFS creates a filesystem helper using the real filesystem (for integration tests)

func SetupMemoryFilesystem 

func SetupMemoryFilesystem() *FSHelper

SetupMemoryFilesystem creates a new in-memory filesystem helper with basic directory structure

func (*FSHelper) CleanupDir 

func (h *FSHelper) CleanupDir(path string) error

CleanupDir removes all contents from a directory

func (*FSHelper) CreateAuthFile 

func (h *FSHelper) CreateAuthFile(path string, authData []byte) error

CreateAuthFile creates an auth file with the provided content

func (*FSHelper) CreateConfigFile 

func (h *FSHelper) CreateConfigFile(path string, cfg map[string]any) error

CreateConfigFile creates a config file with the provided configuration map

func (*FSHelper) CreateDirectoryStructure 

func (h *FSHelper) CreateDirectoryStructure(structure map[string]any) error

CreateDirectoryStructure creates a complex directory structure for testing

func (*FSHelper) CreateMediaDirectory 

func (h *FSHelper) CreateMediaDirectory(basePath string) error

CreateMediaDirectory creates a media directory structure with sample files

func (*FSHelper) FileExists 

func (h *FSHelper) FileExists(path string) bool

FileExists checks if a file exists

func (*FSHelper) ListFiles 

func (h *FSHelper) ListFiles(path string) ([]string, error)

ListFiles lists all files in a directory

func (*FSHelper) ReadFile 

func (h *FSHelper) ReadFile(path string) ([]byte, error)

ReadFile reads a file and returns its content

func (*FSHelper) SetupTestConfigEnvironment 

func (h *FSHelper) SetupTestConfigEnvironment(baseDir string) (map[string]any, error)

SetupTestConfigEnvironment creates a complete test configuration environment

func (*FSHelper) WriteFile 

func (h *FSHelper) WriteFile(path string, content []byte, _ int) error

WriteFile writes content to a file

type HTTPTestHelper 

type HTTPTestHelper struct {
	Server *httptest.Server
	Client *http.Client
}

HTTPTestHelper provides utilities for testing HTTP API endpoints

func NewHTTPTestHelper 

func NewHTTPTestHelper(handler http.Handler) *HTTPTestHelper

NewHTTPTestHelper creates a new HTTP test helper with the given handler

func (*HTTPTestHelper) Close 

func (h *HTTPTestHelper) Close()

Close shuts down the test server

func (*HTTPTestHelper) PostJSONRPC 

func (h *HTTPTestHelper) PostJSONRPC(method string, params any) (*http.Response, error)

PostJSONRPC sends a JSON-RPC request via HTTP POST

type JSONRPCRequest 

type JSONRPCRequest struct {
	Params any       `json:"params,omitempty"`
	Method string    `json:"method"`
	ID     uuid.UUID `json:"id"`
}

JSONRPCRequest represents a JSON-RPC request for testing

type JSONRPCResponse 

type JSONRPCResponse struct {
	Result any                 `json:"result,omitempty"`
	Error  *models.ErrorObject `json:"error,omitempty"`
	ID     uuid.UUID           `json:"id"`
}

JSONRPCResponse represents a JSON-RPC response for testing

func SendJSONRPCRequest 

func SendJSONRPCRequest(conn *websocket.Conn, method string, params any) (*JSONRPCResponse, error)

SendJSONRPCRequest sends a JSON-RPC request and returns the response

type MockKodiServer 

type MockKodiServer struct {
	*httptest.Server
	// contains filtered or unexported fields
}

MockKodiServer provides a mock Kodi JSON-RPC server for integration testing

func NewMockKodiServer 

func NewMockKodiServer(_ *testing.T) *MockKodiServer

NewMockKodiServer creates a new mock Kodi server for testing

func (*MockKodiServer) GetURLForConfig 

func (m *MockKodiServer) GetURLForConfig() string

GetURLForConfig returns the mock server's URL formatted for Kodi client configuration

func (*MockKodiServer) URL 

func (m *MockKodiServer) URL() string

URL returns the mock server's URL for configuration

func (*MockKodiServer) WithActivePlayers 

func (m *MockKodiServer) WithActivePlayers() *MockKodiServer

WithActivePlayers configures the mock server to return active players

type MockMediaDBI 

type MockMediaDBI struct {
	mock.Mock
}

MockMediaDBI is a mock implementation of the MediaDBI interface using testify/mock

func NewMockMediaDBI 

func NewMockMediaDBI() *MockMediaDBI

NewMockMediaDBI creates a new mock MediaDBI interface for testing.

Example usage: 

func TestMediaOperations(t *testing.T) {
	mediaDB := helpers.NewMockMediaDBI()
	mediaDB.On("GetMediaByText", "Game Name").Return(fixtures.SampleMedia()[0], nil)

	// Use mediaDB in your test
	media, err := mediaDB.GetMediaByText("Game Name")
	require.NoError(t, err)
	assert.Equal(t, "Game Name", media.Name)
	mediaDB.AssertExpectations(t)
}

func (*MockMediaDBI) Allocate 

func (m *MockMediaDBI) Allocate() error

func (*MockMediaDBI) BeginTransaction 

func (m *MockMediaDBI) BeginTransaction() error

MediaDBI specific methods - Transaction handling

func (*MockMediaDBI) Close 

func (m *MockMediaDBI) Close() error

func (*MockMediaDBI) CommitTransaction 

func (m *MockMediaDBI) CommitTransaction() error

func (*MockMediaDBI) Exists 

func (m *MockMediaDBI) Exists() bool

func (*MockMediaDBI) FindMedia 

func (m *MockMediaDBI) FindMedia(row database.Media) (database.Media, error)

Media CRUD methods

func (*MockMediaDBI) FindMediaTag 

func (m *MockMediaDBI) FindMediaTag(row database.MediaTag) (database.MediaTag, error)

MediaTag CRUD methods

func (*MockMediaDBI) FindMediaTitle 

func (m *MockMediaDBI) FindMediaTitle(row database.MediaTitle) (database.MediaTitle, error)

MediaTitle CRUD methods

func (*MockMediaDBI) FindOrInsertMedia 

func (m *MockMediaDBI) FindOrInsertMedia(row database.Media) (database.Media, error)

func (*MockMediaDBI) FindOrInsertMediaTag 

func (m *MockMediaDBI) FindOrInsertMediaTag(row database.MediaTag) (database.MediaTag, error)

func (*MockMediaDBI) FindOrInsertMediaTitle 

func (m *MockMediaDBI) FindOrInsertMediaTitle(row database.MediaTitle) (database.MediaTitle, error)

func (*MockMediaDBI) FindOrInsertSystem 

func (m *MockMediaDBI) FindOrInsertSystem(row database.System) (database.System, error)

func (*MockMediaDBI) FindOrInsertTag 

func (m *MockMediaDBI) FindOrInsertTag(row database.Tag) (database.Tag, error)

func (*MockMediaDBI) FindOrInsertTagType 

func (m *MockMediaDBI) FindOrInsertTagType(row database.TagType) (database.TagType, error)

func (*MockMediaDBI) FindSystem 

func (m *MockMediaDBI) FindSystem(row database.System) (database.System, error)

System CRUD methods

func (*MockMediaDBI) FindTag 

func (m *MockMediaDBI) FindTag(row database.Tag) (database.Tag, error)

Tag CRUD methods

func (*MockMediaDBI) FindTagType 

func (m *MockMediaDBI) FindTagType(row database.TagType) (database.TagType, error)

TagType CRUD methods

func (*MockMediaDBI) GetDBPath 

func (m *MockMediaDBI) GetDBPath() string

func (*MockMediaDBI) GetLastGenerated 

func (m *MockMediaDBI) GetLastGenerated() (time.Time, error)

func (*MockMediaDBI) GetMediaByText 

func (m *MockMediaDBI) GetMediaByText(query string) (database.Media, error)

GetMediaByText is a convenience method for testing - wraps SearchMediaPathExact

func (*MockMediaDBI) IndexedSystems 

func (m *MockMediaDBI) IndexedSystems() ([]string, error)

func (*MockMediaDBI) InsertMedia 

func (m *MockMediaDBI) InsertMedia(row database.Media) (database.Media, error)

func (*MockMediaDBI) InsertMediaTag 

func (m *MockMediaDBI) InsertMediaTag(row database.MediaTag) (database.MediaTag, error)

func (*MockMediaDBI) InsertMediaTitle 

func (m *MockMediaDBI) InsertMediaTitle(row database.MediaTitle) (database.MediaTitle, error)

func (*MockMediaDBI) InsertSystem 

func (m *MockMediaDBI) InsertSystem(row database.System) (database.System, error)

func (*MockMediaDBI) InsertTag 

func (m *MockMediaDBI) InsertTag(row database.Tag) (database.Tag, error)

func (*MockMediaDBI) InsertTagType 

func (m *MockMediaDBI) InsertTagType(row database.TagType) (database.TagType, error)

func (*MockMediaDBI) MigrateUp 

func (m *MockMediaDBI) MigrateUp() error

func (*MockMediaDBI) Open 

func (m *MockMediaDBI) Open() error

GenericDBI methods

func (*MockMediaDBI) RandomGame 

func (m *MockMediaDBI) RandomGame(systems []systemdefs.System) (database.SearchResult, error)

func (*MockMediaDBI) ReindexTables 

func (m *MockMediaDBI) ReindexTables() error

func (*MockMediaDBI) RollbackTransaction 

func (m *MockMediaDBI) RollbackTransaction() error

func (*MockMediaDBI) SearchMediaPathExact 

func (m *MockMediaDBI) SearchMediaPathExact(
	systems []systemdefs.System, query string,
) ([]database.SearchResult, error)

Search methods

func (*MockMediaDBI) SearchMediaPathGlob 

func (m *MockMediaDBI) SearchMediaPathGlob(systems []systemdefs.System, query string) ([]database.SearchResult, error)

func (*MockMediaDBI) SearchMediaPathWords 

func (m *MockMediaDBI) SearchMediaPathWords(
	systems []systemdefs.System, query string,
) ([]database.SearchResult, error)

func (*MockMediaDBI) SystemIndexed 

func (m *MockMediaDBI) SystemIndexed(system systemdefs.System) bool

func (*MockMediaDBI) Truncate 

func (m *MockMediaDBI) Truncate() error

func (*MockMediaDBI) UnsafeGetSQLDb 

func (m *MockMediaDBI) UnsafeGetSQLDb() *sql.DB

func (*MockMediaDBI) UpdateLastGenerated 

func (m *MockMediaDBI) UpdateLastGenerated() error

func (*MockMediaDBI) Vacuum 

func (m *MockMediaDBI) Vacuum() error

type MockUserDBI 

type MockUserDBI struct {
	mock.Mock
}

MockUserDBI is a mock implementation of the UserDBI interface using testify/mock

func NewMockUserDBI 

func NewMockUserDBI() *MockUserDBI

NewMockUserDBI creates a new mock UserDBI interface for testing.

Example usage: 

func TestUserOperations(t *testing.T) {
	userDB := helpers.NewMockUserDBI()
	userDB.On("AddHistory", mock.MatchedBy(func(he database.HistoryEntry) bool {
		return he.TokenID != ""
	})).Return(nil)

	// Use userDB in your test
	err := MyFunction(userDB)
	require.NoError(t, err)
	userDB.AssertExpectations(t)
}

func (*MockUserDBI) AddHistory 

func (m *MockUserDBI) AddHistory(entry *database.HistoryEntry) error

UserDBI specific methods

func (*MockUserDBI) AddMapping 

func (m *MockUserDBI) AddMapping(mapping *database.Mapping) error

func (*MockUserDBI) Allocate 

func (m *MockUserDBI) Allocate() error

func (*MockUserDBI) Close 

func (m *MockUserDBI) Close() error

func (*MockUserDBI) DeleteMapping 

func (m *MockUserDBI) DeleteMapping(id int64) error

func (*MockUserDBI) GetAllMappings 

func (m *MockUserDBI) GetAllMappings() ([]database.Mapping, error)

func (*MockUserDBI) GetDBPath 

func (m *MockUserDBI) GetDBPath() string

func (*MockUserDBI) GetEnabledMappings 

func (m *MockUserDBI) GetEnabledMappings() ([]database.Mapping, error)

func (*MockUserDBI) GetHistory 

func (m *MockUserDBI) GetHistory(lastID int) ([]database.HistoryEntry, error)

func (*MockUserDBI) GetMapping 

func (m *MockUserDBI) GetMapping(id int64) (database.Mapping, error)

func (*MockUserDBI) GetZapLinkCache 

func (m *MockUserDBI) GetZapLinkCache(url string) (string, error)

func (*MockUserDBI) GetZapLinkHost 

func (m *MockUserDBI) GetZapLinkHost(host string) (exists, zapscript bool, err error)

func (*MockUserDBI) MigrateUp 

func (m *MockUserDBI) MigrateUp() error

func (*MockUserDBI) Open 

func (m *MockUserDBI) Open() error

GenericDBI methods

func (*MockUserDBI) Truncate 

func (m *MockUserDBI) Truncate() error

func (*MockUserDBI) UnsafeGetSQLDb 

func (m *MockUserDBI) UnsafeGetSQLDb() *sql.DB

func (*MockUserDBI) UpdateMapping 

func (m *MockUserDBI) UpdateMapping(id int64, mapping *database.Mapping) error

func (*MockUserDBI) UpdateZapLinkCache 

func (m *MockUserDBI) UpdateZapLinkCache(url, zapscript string) error

func (*MockUserDBI) UpdateZapLinkHost 

func (m *MockUserDBI) UpdateZapLinkHost(host string, zapscript int) error

func (*MockUserDBI) Vacuum 

func (m *MockUserDBI) Vacuum() error

type MockWebSocketConnection 

type MockWebSocketConnection struct {
	CloseError       error
	WriteError       error
	ReadError        error
	SentMessages     [][]byte
	ReceivedMessages [][]byte

	Closed bool
	// contains filtered or unexported fields
}

MockWebSocketConnection provides a mock implementation for testing

func NewMockWebSocketConnection 

func NewMockWebSocketConnection() *MockWebSocketConnection

NewMockWebSocketConnection creates a new mock WebSocket connection

func (*MockWebSocketConnection) ClearSentMessages 

func (m *MockWebSocketConnection) ClearSentMessages()

ClearSentMessages clears all sent messages

func (*MockWebSocketConnection) Close 

func (m *MockWebSocketConnection) Close() error

Close simulates closing the connection

func (*MockWebSocketConnection) GetSentMessages 

func (m *MockWebSocketConnection) GetSentMessages() [][]byte

GetSentMessages returns all sent messages (thread-safe copy)

func (*MockWebSocketConnection) QueueMessage 

func (m *MockWebSocketConnection) QueueMessage(data []byte)

QueueMessage adds a message to the read queue

func (*MockWebSocketConnection) ReadMessage 

func (m *MockWebSocketConnection) ReadMessage() (messageType int, data []byte, err error)

ReadMessage simulates reading a message

func (*MockWebSocketConnection) SetCloseError 

func (m *MockWebSocketConnection) SetCloseError(err error)

SetCloseError sets an error to be returned on close operations

func (*MockWebSocketConnection) SetReadError 

func (m *MockWebSocketConnection) SetReadError(err error)

SetReadError sets an error to be returned on read operations

func (*MockWebSocketConnection) SetWriteError 

func (m *MockWebSocketConnection) SetWriteError(err error)

SetWriteError sets an error to be returned on write operations

func (*MockWebSocketConnection) WriteMessage 

func (m *MockWebSocketConnection) WriteMessage(_ int, data []byte) error

WriteMessage simulates writing a message

type WebSocketMessage 

type WebSocketMessage struct {
	Timestamp time.Time `json:"timestamp"`
	Error     error     `json:"error,omitempty"`
	Type      string    `json:"type"`
	SessionID string    `json:"sessionId,omitempty"`
	Data      []byte    `json:"data"`
}

WebSocketMessage captures a message sent or received during testing

type WebSocketTestServer 

type WebSocketTestServer struct {
	Server *httptest.Server
	Melody *melody.Melody

	Messages []WebSocketMessage
	// contains filtered or unexported fields
}

WebSocketTestServer provides utilities for testing WebSocket connections

func NewWebSocketTestServer 

func NewWebSocketTestServer(t *testing.T, handler func(*melody.Session, []byte)) *WebSocketTestServer

NewWebSocketTestServer creates a new WebSocket test server

func (*WebSocketTestServer) ClearMessages 

func (wsts *WebSocketTestServer) ClearMessages()

ClearMessages clears all recorded messages (thread-safe)

func (*WebSocketTestServer) Close 

func (wsts *WebSocketTestServer) Close()

Close shuts down the test server

func (*WebSocketTestServer) CreateWebSocketClient 

func (wsts *WebSocketTestServer) CreateWebSocketClient() (*websocket.Conn, error)

CreateWebSocketClient creates a WebSocket client connected to the test server

func (*WebSocketTestServer) GetMessages 

func (wsts *WebSocketTestServer) GetMessages() []WebSocketMessage

GetMessages returns all recorded messages (thread-safe)

func (*WebSocketTestServer) WaitForMessages 

func (wsts *WebSocketTestServer) WaitForMessages(count int, timeout time.Duration) error

WaitForMessages waits for a specific number of messages with timeout

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