function DatabaseSelectCloneTest::testSelectConditionSubQueryCloning in Drupal 7

Test that subqueries as value within conditions are cloned properly.

File

modules/simpletest/tests/database_test.test, line 307

Class

DatabaseSelectCloneTest

Test cloning Select queries.

Code

function testSelectConditionSubQueryCloning() {
  $subquery = db_select('test', 't');
  $subquery
    ->addField('t', 'id', 'id');
  $subquery
    ->condition('age', 28, '<');
  $query = db_select('test', 't');
  $query
    ->addField('t', 'name', 'name');
  $query
    ->condition('id', $subquery, 'IN');
  $clone = clone $query;

  // Cloned query should not be altered by the following modification
  // happening on original query.
  $subquery
    ->condition('age', 25, '>');
  $clone_result = $clone
    ->countQuery()
    ->execute()
    ->fetchField();
  $query_result = $query
    ->countQuery()
    ->execute()
    ->fetchField();

  // Make sure the cloned query has not been modified
  $this
    ->assertEqual(3, $clone_result, 'The cloned query returns the expected number of rows');
  $this
    ->assertEqual(2, $query_result, 'The query returns the expected number of rows');
}