db = $db; } public function exposeBuildPatientSearchCondition(string $rowData, ?string $abhaField = null, ?string $oldUhidField = null): string { return $this->buildPatientSearchCondition($rowData, $abhaField, $oldUhidField); } }; $controller->setDbStub(new class { public function escape($value): string { return "'" . str_replace("'", "''", (string) $value) . "'"; } }); $condition = $controller->exposeBuildPatientSearchCondition('12345', 'abha_id', 'old_uhid'); $this->assertStringContainsString('old_uhid', $condition); $this->assertStringContainsString('TRIM(COALESCE(p.old_uhid', $condition); } }