Retry test-fixtures loading in case of transaction rollback (#5125)

models/test_fixtures.go

@@ -19,5 +19,14 @@ func InitFixtures(helper testfixtures.Helper, dir string) (err error) {
 
 // LoadFixtures load fixtures for a test database
 func LoadFixtures() error {
-	return fixtures.Load()
+	var err error
+	// Database transaction conflicts could occur and result in ROLLBACK
+	// As a simple workaround, we just retry 5 times.
+	for i := 0; i < 5; i++ {
+		err = fixtures.Load()
+		if err == nil {
+			break
+		}
+	}
+	return err
 }