test improvements and some refactor

testhelpers/testhelpers.go

@@ -1,5 +1,10 @@
 package testhelpers
 
+import (
+	"net/http/httptest"
+	"testing"
+)
+
 func CheckSlicesEquality(a []any, b []any) bool {
 	if len(a) != len(b) {
 		return false
@@ -31,3 +36,29 @@ func StringSliceToAnySlice(s []string) []any {
 	}
 	return result
 }
+
+type ExpectedResponse struct {
+	Code   int
+	Header string
+	Body   string
+}
+
+func VerifyResponse(t *testing.T, rr *httptest.ResponseRecorder, expectedResponse ExpectedResponse) {
+	t.Helper()
+
+	expectedCode := expectedResponse.Code
+	expectedHeader := expectedResponse.Header
+	expectedBody := expectedResponse.Body
+
+	if status := rr.Code; status != expectedCode {
+		t.Errorf("Expected status code: %d, Actual: %d", expectedCode, status)
+	}
+
+	if header := rr.Header().Get("Content-Type"); header != expectedHeader {
+		t.Errorf("Expected Content-Type: %s, Actual: %s", expectedHeader, header)
+	}
+
+	if body := rr.Body.String(); body != expectedBody {
+		t.Errorf("Expected body: %q, Actual: %q", expectedBody, body)
+	}
+}