function DatabaseSelectCloneTest::testSelectConditionSubQueryCloning

Test that subqueries as value within conditions are cloned properly.

File

modules/simpletest/tests/database_test.test, line 319

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 have a different unique identifier.
    $this->assertNotEqual($query->uniqueIdentifier(), $clone->uniqueIdentifier());
    // 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');
}