claude
85 lines
2.2 KiB
Markdown
85 lines
2.2 KiB
Markdown
# HTTP Handler Testing
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Use `httptest` package for testing HTTP handlers without starting a server.
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## Basic Handler Test
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```go
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func TestCreateUserHandler(t *testing.T) {
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tests := []struct {
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name string
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body string
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expectedStatus int
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}{
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{
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name: "valid request",
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body: `{"name": "Alice", "email": "alice@example.com"}`,
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expectedStatus: http.StatusCreated,
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},
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{
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name: "invalid JSON",
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body: `invalid json`,
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expectedStatus: http.StatusBadRequest,
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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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is := assert.New(t)
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req := httptest.NewRequest(http.MethodPost, "/users", strings.NewReader(tt.body))
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req.Header.Set("Content-Type", "application/json")
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w := httptest.NewRecorder()
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handler := http.HandlerFunc(CreateUserHandler)
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handler.ServeHTTP(w, req)
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is.Equal(tt.expectedStatus, w.Code)
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})
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}
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}
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```
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## Query Parameters and Headers
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```go
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func TestListUsersHandler(t *testing.T) {
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tests := []struct {
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name string
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query string
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authHeader string
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expectedStatus int
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}{
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{
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name: "paginated results",
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query: "?page=1&limit=10",
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authHeader: "Bearer token123",
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expectedStatus: http.StatusOK,
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},
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{
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name: "missing auth",
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query: "?page=1",
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authHeader: "",
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expectedStatus: http.StatusUnauthorized,
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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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is := assert.New(t)
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req := httptest.NewRequest(http.MethodGet, "/users"+tt.query, nil)
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if tt.authHeader != "" {
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req.Header.Set("Authorization", tt.authHeader)
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}
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w := httptest.NewRecorder()
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handler := AuthMiddleware(ListUsersHandler)
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handler.ServeHTTP(w, req)
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is.Equal(tt.expectedStatus, w.Code)
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})
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}
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}
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```
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