function SchemaTestCase::testSchema

File

modules/simpletest/tests/schema.test, line 28

Class

SchemaTestCase

Unit tests for the Schema API.

Code

function testSchema() {
    // Try creating a table.
    $table_specification = array(
        'description' => 'Schema table description.',
        'fields' => array(
            'id' => array(
                'type' => 'int',
                'default' => NULL,
            ),
            'test_field' => array(
                'type' => 'int',
                'not null' => TRUE,
                'description' => 'Schema column description.',
            ),
        ),
    );
    db_create_table('test_table', $table_specification);
    // Assert that the table exists.
    $this->assertTrue(db_table_exists('test_table'), 'The table exists.');
    // Assert that the table comment has been set.
    $this->checkSchemaComment($table_specification['description'], 'test_table');
    // Assert that the column comment has been set.
    $this->checkSchemaComment($table_specification['fields']['test_field']['description'], 'test_table', 'test_field');
    // An insert without a value for the column 'test_table' should fail.
    $this->assertFalse($this->tryInsert(), 'Insert without a default failed.');
    // Add a default value to the column.
    db_field_set_default('test_table', 'test_field', 0);
    // The insert should now succeed.
    $this->assertTrue($this->tryInsert(), 'Insert with a default succeeded.');
    // Remove the default.
    db_field_set_no_default('test_table', 'test_field');
    // The insert should fail again.
    $this->assertFalse($this->tryInsert(), 'Insert without a default failed.');
    // Test for fake index and test for the boolean result of indexExists().
    $index_exists = Database::getConnection()->schema()
        ->indexExists('test_table', 'test_field');
    $this->assertIdentical($index_exists, FALSE, 'Fake index does not exists');
    // Add index.
    db_add_index('test_table', 'test_field', array(
        'test_field',
    ));
    // Test for created index and test for the boolean result of indexExists().
    $index_exists = Database::getConnection()->schema()
        ->indexExists('test_table', 'test_field');
    $this->assertIdentical($index_exists, TRUE, 'Index created.');
    // Rename the table.
    db_rename_table('test_table', 'test_table2');
    // Index should be renamed.
    $index_exists = Database::getConnection()->schema()
        ->indexExists('test_table2', 'test_field');
    $this->assertTrue($index_exists, 'Index was renamed.');
    // We need the default so that we can insert after the rename.
    db_field_set_default('test_table2', 'test_field', 0);
    $this->assertFalse($this->tryInsert(), 'Insert into the old table failed.');
    $this->assertTrue($this->tryInsert('test_table2'), 'Insert into the new table succeeded.');
    // We should have successfully inserted exactly two rows.
    $count = db_query('SELECT COUNT(*) FROM {test_table2}')->fetchField();
    $this->assertEqual($count, 2, 'Two fields were successfully inserted.');
    // Try to drop the table.
    db_drop_table('test_table2');
    $this->assertFalse(db_table_exists('test_table2'), 'The dropped table does not exist.');
    // Recreate the table.
    db_create_table('test_table', $table_specification);
    db_field_set_default('test_table', 'test_field', 0);
    db_add_field('test_table', 'test_serial', array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'description' => 'Added column description.',
    ));
    // Assert that the column comment has been set.
    $this->checkSchemaComment('Added column description.', 'test_table', 'test_serial');
    // Change the new field to a serial column.
    db_change_field('test_table', 'test_serial', 'test_serial', array(
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'Changed column description.',
    ), array(
        'primary key' => array(
            'test_serial',
        ),
    ));
    // Assert that the column comment has been set.
    $this->checkSchemaComment('Changed column description.', 'test_table', 'test_serial');
    $this->assertTrue($this->tryInsert(), 'Insert with a serial succeeded.');
    $max1 = db_query('SELECT MAX(test_serial) FROM {test_table}')->fetchField();
    $this->assertTrue($this->tryInsert(), 'Insert with a serial succeeded.');
    $max2 = db_query('SELECT MAX(test_serial) FROM {test_table}')->fetchField();
    $this->assertTrue($max2 > $max1, 'The serial is monotone.');
    $count = db_query('SELECT COUNT(*) FROM {test_table}')->fetchField();
    $this->assertEqual($count, 2, 'There were two rows.');
    // Use database specific data type and ensure that table is created.
    $table_specification = array(
        'description' => 'Schema table description.',
        'fields' => array(
            'timestamp' => array(
                'mysql_type' => 'timestamp',
                'pgsql_type' => 'timestamp',
                'sqlite_type' => 'datetime',
                'not null' => FALSE,
                'default' => NULL,
            ),
        ),
    );
    try {
        db_create_table('test_timestamp', $table_specification);
    } catch (Exception $e) {
    }
    $this->assertTrue(db_table_exists('test_timestamp'), 'Table with database specific datatype was created.');
}