Test escaping of LIKE wildcards.
function testLikeEscape() {
db_insert('test')
->fields(array(
'name' => 'Ring_',
))
->execute();
// Match both "Ringo" and "Ring_".
$num_matches = db_select('test', 't')
->condition('name', 'Ring_', 'LIKE')
->countQuery()
->execute()
->fetchField();
$this
->assertIdentical($num_matches, '2', 'Found 2 records.');
// Match only "Ring_" using a LIKE expression with no wildcards.
$num_matches = db_select('test', 't')
->condition('name', db_like('Ring_'), 'LIKE')
->countQuery()
->execute()
->fetchField();
$this
->assertIdentical($num_matches, '1', 'Found 1 record.');
}