function DatabaseMergeTestCase::testMergeUpdateExpression

Confirm that we can merge-update a record successfully, with expressions.

File

modules/simpletest/tests/database_test.test, line 1325

Class

DatabaseMergeTestCase

Test the MERGE query builder.

Code

function testMergeUpdateExpression() {
    $num_records_before = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
    $age_before = db_query('SELECT age FROM {test_people} WHERE job = :job', array(
        ':job' => 'Speaker',
    ))->fetchField();
    // This is a very contrived example, as I have no idea why you'd want to
    // change age this way, but that's beside the point.
    // Note that we are also double-setting age here, once as a literal and
    // once as an expression. This test will only pass if the expression wins,
    // which is what is supposed to happen.
    db_merge('test_people')->key(array(
        'job' => 'Speaker',
    ))
        ->fields(array(
        'name' => 'Tiffany',
    ))
        ->insertFields(array(
        'age' => 31,
    ))
        ->expression('age', 'age + :age', array(
        ':age' => 4,
    ))
        ->execute();
    $num_records_after = db_query('SELECT COUNT(*) FROM {test_people}')->fetchField();
    $this->assertEqual($num_records_before, $num_records_after, 'Merge updated properly.');
    $person = db_query('SELECT * FROM {test_people} WHERE job = :job', array(
        ':job' => 'Speaker',
    ))->fetch();
    $this->assertEqual($person->name, 'Tiffany', 'Name set correctly.');
    $this->assertEqual($person->age, $age_before + 4, 'Age updated correctly.');
    $this->assertEqual($person->job, 'Speaker', 'Job set correctly.');
}