function UpdateTest::testExpressionUpdate

Tests updating with expressions.

File

core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php, line 101

Class

UpdateTest

Tests the update query builder.

Namespace

Code

public function testExpressionUpdate() {
    // Ensure that expressions are handled properly. This should set every
    // record's age to a square of itself.
    $num_rows = $this->connection
        ->update('test')
        ->expression('age', 'age * age')
        ->execute();
    $this->assertIdentical($num_rows, 4, 'Updated 4 records.');
    $saved_name = $this->connection
        ->query('SELECT name FROM {test} WHERE age = :age', [
        ':age' => pow(26, 2),
    ])
        ->fetchField();
    $this->assertIdentical($saved_name, 'Paul', 'Successfully updated values using an algebraic expression.');
}