public function UpdateTest::testExpressionUpdate in Drupal 8

Same name and namespace in other branches

1. 9 core/tests/Drupal/KernelTests/Core/Database/UpdateTest.php \Drupal\KernelTests\Core\Database\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

Drupal\KernelTests\Core\Database

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.');
}