public function MergeTest::testMergeUpdateExpression

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

File

core/tests/Drupal/KernelTests/Core/Database/MergeTest.php, line 120

Class

MergeTest

Tests the MERGE query builder.

Namespace

Code

public function testMergeUpdateExpression() {
  $num_records_before = $this->connection
    ->query('SELECT COUNT(*) FROM {test_people}')
    ->fetchField();
  $age_before = $this->connection
    ->query('SELECT [age] FROM {test_people} WHERE [job] = :job', [
    ':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.
  $this->connection
    ->merge('test_people')
    ->key('job', 'Speaker')
    ->fields([
    'name' => 'Tiffany',
  ])
    ->insertFields([
    'age' => 31,
  ])
    ->expression('age', '[age] + :age', [
    ':age' => 4,
  ])
    ->execute();
  $num_records_after = $this->connection
    ->query('SELECT COUNT(*) FROM {test_people}')
    ->fetchField();
  $this
    ->assertEquals($num_records_before, $num_records_after, 'Merge updated properly.');
  $person = $this->connection
    ->query('SELECT * FROM {test_people} WHERE [job] = :job', [
    ':job' => 'Speaker',
  ])
    ->fetch();
  $this
    ->assertEquals('Tiffany', $person->name, 'Name set correctly.');
  $this
    ->assertEquals($age_before + 4, $person->age, 'Age updated correctly.');
  $this
    ->assertEquals('Speaker', $person->job, 'Job set correctly.');
}