Tests that trying to import from an empty staging configuration directory fails.
function testEmptyImportFails() {
try {
$this->container
->get('config.storage.staging')
->deleteAll();
$this->configImporter
->reset()
->import();
$this
->assertFalse(FALSE, "ConfigImporterException not thrown, we didn't stop an empty import.");
} catch (ConfigImporterException $e) {
$this
->assertTrue(TRUE, 'ConfigImporterException thrown, successfully stopping an empty import.');
}
}