Simplify httpGet function in client_test.go for cleaner code

reddit/client_test.go

@@ -1,7 +1,6 @@
 package reddit
 
 import (
-	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -50,11 +49,8 @@ func TestGetLatestImage(t *testing.T) {
 	defer server.Close()
 
 	// Custom httpGet function for testing
-	httpGet := func(url string) (*http.Response, error) {
-		if strings.Contains(url, "/r/wallpaper/.json") {
-			return http.Get(server.URL + "/r/wallpaper/.json")
-		}
-		return nil, fmt.Errorf("unexpected URL: %s", url)
+	httpGet := func() (*http.Response, error) {
+		return http.Get(server.URL + "/r/wallpaper/.json")
 	}
 
 	// Test the function