refactor testing files

user_test.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 	"testing"
 
+	"git.artlef.fr/PersonalLibraryManager/internal/testutils"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -55,7 +56,7 @@ func TestPostUserHandler_PasswordTooBig(t *testing.T) {
 }
 
 func testPostUserHandler(t *testing.T, userJson string, expectedCode int) {
-	router := testSetup()
+	router := testutils.TestSetup()
 	w := httptest.NewRecorder()
 
 	req, _ := http.NewRequest("POST", "/auth/signup",