function AlterTest::testAlterExpression

Tests that we can alter expressions in the query.

File

core/tests/Drupal/KernelTests/Core/Database/AlterTest.php, line 96

Class

AlterTest

Tests the hook_query_alter capabilities of the Select builder.

Namespace

Code

public function testAlterExpression() : void {
    $query = $this->connection
        ->select('test');
    $name_field = $query->addField('test', 'name');
    $age_field = $query->addExpression("[age]*2", 'double_age');
    $query->condition('age', 27);
    $query->addTag('database_test_alter_change_expressions');
    $result = $query->execute();
    // Ensure that we got the right record.
    $record = $result->fetch();
    $this->assertEquals('George', $record->{$name_field}, 'Fetched name is correct.');
    $this->assertEquals(27 * 3, $record->{$age_field}, 'Fetched age expression is correct.');
}