Test that we can merge-insert without any update fields.
function testMergeInsertWithoutUpdate() {
$num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')
->fetchField();
db_merge('test_people')
->key(array(
'job' => 'Presenter',
))
->execute();
$num_records_after = db_query('SELECT COUNT(*) FROM {test_people}')
->fetchField();
$this
->assertEqual($num_records_before + 1, $num_records_after, 'Merge inserted properly.');
$person = db_query('SELECT * FROM {test_people} WHERE job = :job', array(
':job' => 'Presenter',
))
->fetch();
$this
->assertEqual($person->name, '', 'Name set correctly.');
$this
->assertEqual($person->age, 0, 'Age set correctly.');
$this
->assertEqual($person->job, 'Presenter', 'Job set correctly.');
}