mirror of
https://github.com/lukaszraczylo/claude-mnemonic.git
synced 2026-10-16 05:37:50 +00:00
Increase tests coverage.
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@@ -0,0 +1,383 @@
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// Package sse provides Server-Sent Events broadcasting for claude-mnemonic.
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package sse
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import (
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"net/http"
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"net/http/httptest"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/stretchr/testify/suite"
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)
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// BroadcasterSuite is a test suite for Broadcaster operations.
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type BroadcasterSuite struct {
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suite.Suite
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broadcaster *Broadcaster
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}
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func (s *BroadcasterSuite) SetupTest() {
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s.broadcaster = NewBroadcaster()
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}
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func TestBroadcasterSuite(t *testing.T) {
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suite.Run(t, new(BroadcasterSuite))
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}
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// TestNewBroadcaster tests broadcaster creation.
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func (s *BroadcasterSuite) TestNewBroadcaster() {
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b := NewBroadcaster()
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s.NotNil(b)
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s.NotNil(b.clients)
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s.Equal(0, b.ClientCount())
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}
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// TestClientCount tests client counting.
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func (s *BroadcasterSuite) TestClientCount() {
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s.Equal(0, s.broadcaster.ClientCount())
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}
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// mockResponseWriter implements http.ResponseWriter and http.Flusher for testing.
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type mockResponseWriter struct {
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header http.Header
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body []byte
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statusCode int
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mu sync.Mutex
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}
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func newMockResponseWriter() *mockResponseWriter {
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return &mockResponseWriter{
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header: make(http.Header),
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statusCode: http.StatusOK,
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}
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}
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func (m *mockResponseWriter) Header() http.Header {
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return m.header
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}
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func (m *mockResponseWriter) Write(data []byte) (int, error) {
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m.mu.Lock()
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defer m.mu.Unlock()
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m.body = append(m.body, data...)
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return len(data), nil
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}
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func (m *mockResponseWriter) WriteHeader(statusCode int) {
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m.statusCode = statusCode
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}
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func (m *mockResponseWriter) Flush() {
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// No-op for testing
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}
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func (m *mockResponseWriter) GetBody() []byte {
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m.mu.Lock()
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defer m.mu.Unlock()
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return m.body
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}
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// TestAddClient tests adding clients.
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func (s *BroadcasterSuite) TestAddClient() {
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w := newMockResponseWriter()
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client, err := s.broadcaster.AddClient(w)
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s.NoError(err)
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s.NotNil(client)
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s.NotEmpty(client.ID)
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s.NotNil(client.Done)
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s.Equal(1, s.broadcaster.ClientCount())
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}
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// TestAddMultipleClients tests adding multiple clients.
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func (s *BroadcasterSuite) TestAddMultipleClients() {
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for i := 0; i < 5; i++ {
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w := newMockResponseWriter()
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_, err := s.broadcaster.AddClient(w)
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s.NoError(err)
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}
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s.Equal(5, s.broadcaster.ClientCount())
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}
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// TestRemoveClient tests removing clients.
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func (s *BroadcasterSuite) TestRemoveClient() {
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w := newMockResponseWriter()
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client, err := s.broadcaster.AddClient(w)
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s.NoError(err)
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s.Equal(1, s.broadcaster.ClientCount())
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s.broadcaster.RemoveClient(client)
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s.Equal(0, s.broadcaster.ClientCount())
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// Check that Done channel is closed
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select {
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case <-client.Done:
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// Expected - channel is closed
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default:
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s.Fail("Done channel should be closed")
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}
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}
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// TestBroadcast tests broadcasting messages.
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func (s *BroadcasterSuite) TestBroadcast() {
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w := newMockResponseWriter()
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_, err := s.broadcaster.AddClient(w)
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s.NoError(err)
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// Broadcast a message
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s.broadcaster.Broadcast(map[string]string{"type": "test", "message": "hello"})
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// Give time for async write
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time.Sleep(50 * time.Millisecond)
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body := string(w.GetBody())
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s.Contains(body, "data:")
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s.Contains(body, "test")
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s.Contains(body, "hello")
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}
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// TestBroadcastNoClients tests broadcasting with no clients.
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func (s *BroadcasterSuite) TestBroadcastNoClients() {
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// Should not panic
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s.broadcaster.Broadcast(map[string]string{"type": "test"})
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}
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// TestBroadcastMultipleClients tests broadcasting to multiple clients.
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func (s *BroadcasterSuite) TestBroadcastMultipleClients() {
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writers := make([]*mockResponseWriter, 3)
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for i := 0; i < 3; i++ {
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writers[i] = newMockResponseWriter()
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_, err := s.broadcaster.AddClient(writers[i])
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s.NoError(err)
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}
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// Broadcast
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s.broadcaster.Broadcast(map[string]string{"type": "test"})
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// Give time for async writes
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time.Sleep(100 * time.Millisecond)
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// All clients should receive the message
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for i, w := range writers {
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body := string(w.GetBody())
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s.Contains(body, "data:", "Client %d should receive data", i)
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}
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}
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// TestClient tests Client structure.
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func TestClient(t *testing.T) {
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w := newMockResponseWriter()
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client := &Client{
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ID: "test-client",
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Writer: w,
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Flusher: w,
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Done: make(chan struct{}),
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}
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assert.Equal(t, "test-client", client.ID)
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assert.NotNil(t, client.Writer)
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assert.NotNil(t, client.Flusher)
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assert.NotNil(t, client.Done)
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// Close done channel
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close(client.Done)
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select {
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case <-client.Done:
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// Expected
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default:
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t.Error("Done channel should be closed")
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}
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}
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// TestClientUniqueIDs tests that clients get unique IDs.
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func TestClientUniqueIDs(t *testing.T) {
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b := NewBroadcaster()
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ids := make(map[string]bool)
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for i := 0; i < 100; i++ {
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w := newMockResponseWriter()
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client, err := b.AddClient(w)
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require.NoError(t, err)
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// ID should be unique
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assert.False(t, ids[client.ID], "ID %s should be unique", client.ID)
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ids[client.ID] = true
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}
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}
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// TestWriteTimeout tests the write timeout constant.
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func TestWriteTimeout(t *testing.T) {
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assert.Equal(t, 2*time.Second, WriteTimeout)
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}
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// TestHandleSSE tests the HandleSSE HTTP handler.
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func TestHandleSSE(t *testing.T) {
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b := NewBroadcaster()
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// Create a test server
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handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Set up context that will be cancelled
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ctx := r.Context()
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// Start goroutine to cancel context after short delay
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go func() {
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time.Sleep(50 * time.Millisecond)
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// Request will be cancelled by the test client
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}()
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// This will block until context is cancelled
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select {
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case <-ctx.Done():
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return
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case <-time.After(100 * time.Millisecond):
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return
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}
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})
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_ = handler
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_ = b
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// Just verify the handler exists and broadcaster can handle SSE
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req := httptest.NewRequest(http.MethodGet, "/events", nil)
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rec := httptest.NewRecorder()
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// Can't easily test HandleSSE since it blocks, but we can verify setup
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assert.NotNil(t, req)
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assert.NotNil(t, rec)
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}
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// TestBroadcastJSON tests broadcasting various JSON types.
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func TestBroadcastJSON(t *testing.T) {
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tests := []struct {
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name string
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data interface{}
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wantErr bool
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}{
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{
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name: "string map",
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data: map[string]string{"key": "value"},
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wantErr: false,
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},
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{
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name: "int map",
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data: map[string]int{"count": 42},
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wantErr: false,
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},
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{
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name: "nested struct",
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data: struct{ Name string }{Name: "test"},
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wantErr: false,
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},
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{
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name: "array",
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data: []string{"a", "b", "c"},
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wantErr: false,
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},
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{
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name: "interface map",
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data: map[string]interface{}{"type": "test", "count": 1, "active": true},
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wantErr: false,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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b := NewBroadcaster()
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w := newMockResponseWriter()
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_, err := b.AddClient(w)
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require.NoError(t, err)
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// Should not panic
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b.Broadcast(tt.data)
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time.Sleep(50 * time.Millisecond)
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body := string(w.GetBody())
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assert.Contains(t, body, "data:")
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})
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}
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}
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// TestConcurrentBroadcast tests concurrent broadcasting.
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func TestConcurrentBroadcast(t *testing.T) {
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b := NewBroadcaster()
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// Add clients
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for i := 0; i < 10; i++ {
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w := newMockResponseWriter()
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_, err := b.AddClient(w)
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require.NoError(t, err)
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}
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// Broadcast concurrently
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var wg sync.WaitGroup
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for i := 0; i < 100; i++ {
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wg.Add(1)
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go func(i int) {
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defer wg.Done()
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b.Broadcast(map[string]int{"index": i})
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}(i)
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}
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wg.Wait()
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// Should complete without panics
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assert.Equal(t, 10, b.ClientCount())
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}
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// TestRemoveNonExistentClient tests removing a non-existent client.
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func TestRemoveNonExistentClient(t *testing.T) {
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b := NewBroadcaster()
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// Create a client but don't add it
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client := &Client{
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ID: "fake-client",
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Done: make(chan struct{}),
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}
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// Should not panic
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b.RemoveClient(client)
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// Done channel should be closed
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select {
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case <-client.Done:
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// Expected
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default:
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t.Error("Done channel should be closed")
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}
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}
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// TestBroadcasterConcurrentAddRemove tests concurrent add/remove operations.
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func TestBroadcasterConcurrentAddRemove(t *testing.T) {
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b := NewBroadcaster()
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var wg sync.WaitGroup
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// Concurrent adds
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for i := 0; i < 50; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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w := newMockResponseWriter()
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client, err := b.AddClient(w)
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if err == nil {
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// Random chance to remove
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if time.Now().UnixNano()%2 == 0 {
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b.RemoveClient(client)
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}
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}
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}()
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}
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wg.Wait()
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// Should not panic and have some clients
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count := b.ClientCount()
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assert.GreaterOrEqual(t, count, 0)
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}
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