small fix, don't worry about it

app/backend/internal/middleware/ratelimit_test.go

@@ -0,0 +1,85 @@
+package middleware
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestRateLimiter(t *testing.T) {
+	limiter := NewRateLimiter(5, time.Second)
+
+	// Should allow first 5 requests
+	for i := 0; i < 5; i++ {
+		assert.True(t, limiter.Allow("test-key"), "Request %d should be allowed", i+1)
+	}
+
+	// Should block 6th request
+	assert.False(t, limiter.Allow("test-key"), "6th request should be blocked")
+
+	// Wait for window to reset
+	time.Sleep(time.Second + 100*time.Millisecond)
+
+	// Should allow requests again
+	assert.True(t, limiter.Allow("test-key"), "Request after reset should be allowed")
+}
+
+func TestRateLimitMiddleware(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	router := gin.New()
+	router.Use(RateLimit(2, time.Second))
+	router.GET("/test", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{"message": "success"})
+	})
+
+	// First request should succeed
+	req1 := httptest.NewRequest(http.MethodGet, "/test", nil)
+	w1 := httptest.NewRecorder()
+	router.ServeHTTP(w1, req1)
+	assert.Equal(t, http.StatusOK, w1.Code)
+
+	// Second request should succeed
+	req2 := httptest.NewRequest(http.MethodGet, "/test", nil)
+	w2 := httptest.NewRecorder()
+	router.ServeHTTP(w2, req2)
+	assert.Equal(t, http.StatusOK, w2.Code)
+
+	// Third request should be rate limited
+	req3 := httptest.NewRequest(http.MethodGet, "/test", nil)
+	w3 := httptest.NewRecorder()
+	router.ServeHTTP(w3, req3)
+	assert.Equal(t, http.StatusTooManyRequests, w3.Code)
+}
+
+func TestRateLimitByUser(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	router := gin.New()
+	router.Use(func(c *gin.Context) {
+		c.Set("user_id", "user123")
+		c.Next()
+	})
+	router.Use(RateLimitByUser(2, time.Second))
+	router.GET("/test", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{"message": "success"})
+	})
+
+	// First two requests should succeed
+	for i := 0; i < 2; i++ {
+		req := httptest.NewRequest(http.MethodGet, "/test", nil)
+		w := httptest.NewRecorder()
+		router.ServeHTTP(w, req)
+		assert.Equal(t, http.StatusOK, w.Code)
+	}
+
+	// Third request should be rate limited
+	req := httptest.NewRequest(http.MethodGet, "/test", nil)
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+	assert.Equal(t, http.StatusTooManyRequests, w.Code)
+}