<?php

namespace Doctrine\Tests\DBAL\Platforms;

use Doctrine\DBAL\Platforms\OraclePlatform;
use Doctrine\DBAL\Types\Type;

require_once __DIR__ . '/../../TestInit.php';
 
class OraclePlatformTest extends AbstractPlatformTestCase
{
    public function createPlatform()
    {
        return new OraclePlatform;
    }

    public function getGenerateTableSql()
    {
        return 'CREATE TABLE test (id NUMBER(10) NOT NULL, test VARCHAR2(255) DEFAULT NULL, PRIMARY KEY(id))';
    }

    public function getGenerateTableWithMultiColumnUniqueIndexSql()
    {
        return array(
            'CREATE TABLE test (foo VARCHAR2(255) DEFAULT NULL, bar VARCHAR2(255) DEFAULT NULL)',
            'CREATE UNIQUE INDEX test_foo_bar_uniq ON test (foo, bar)',
        );
    }

    public function getGenerateAlterTableSql()
    {
        return array(
            'ALTER TABLE mytable ADD (quota NUMBER(10) DEFAULT NULL)',
            "ALTER TABLE mytable MODIFY (baz  VARCHAR2(255) DEFAULT 'def' NOT NULL)",
            "ALTER TABLE mytable DROP COLUMN foo",
            "ALTER TABLE mytable RENAME TO userlist",
        );
    }

    /**
     * @expectedException Doctrine\DBAL\DBALException
     */
    public function testRLike()
    {
        $this->assertEquals('RLIKE', $this->_platform->getRegexpExpression(), 'Regular expression operator is not correct');
    }

    public function testGeneratesSqlSnippets()
    {
        $this->assertEquals('"', $this->_platform->getIdentifierQuoteCharacter(), 'Identifier quote character is not correct');
        $this->assertEquals('dbms_random.value', $this->_platform->getRandomExpression(), 'Random function is not correct');
        $this->assertEquals('column1 || column2 || column3', $this->_platform->getConcatExpression('column1', 'column2', 'column3'), 'Concatenation expression is not correct');
    }

    /**
     * @expectedException Doctrine\DBAL\DBALException
     */
    public function testGetCharsetFieldDeclaration()
    {
        $this->assertEquals('CHARACTER SET utf8', $this->_platform->getCharsetFieldDeclaration('utf8'), 'Charset declaration is not correct');
    }

    public function testGeneratesTransactionsCommands()
    {
        $this->assertEquals(
            'SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED',
            $this->_platform->getSetTransactionIsolationSql(\Doctrine\DBAL\Connection::TRANSACTION_READ_UNCOMMITTED)
        );
        $this->assertEquals(
            'SET TRANSACTION ISOLATION LEVEL READ COMMITTED',
            $this->_platform->getSetTransactionIsolationSql(\Doctrine\DBAL\Connection::TRANSACTION_READ_COMMITTED)
        );
        $this->assertEquals(
            'SET TRANSACTION ISOLATION LEVEL SERIALIZABLE',
            $this->_platform->getSetTransactionIsolationSql(\Doctrine\DBAL\Connection::TRANSACTION_REPEATABLE_READ)
        );
        $this->assertEquals(
            'SET TRANSACTION ISOLATION LEVEL SERIALIZABLE',
            $this->_platform->getSetTransactionIsolationSql(\Doctrine\DBAL\Connection::TRANSACTION_SERIALIZABLE)
        );
    }

    /**
     * @expectedException Doctrine\DBAL\DBALException
     */
    public function testShowDatabasesThrowsException()
    {
        $this->assertEquals('SHOW DATABASES', $this->_platform->getShowDatabasesSql());
    }

    /**
     * @expectedException Doctrine\DBAL\DBALException
     */
    public function testCreateDatabaseThrowsException()
    {
        $this->assertEquals('CREATE DATABASE foobar', $this->_platform->getCreateDatabaseSql('foobar'));
    }

    public function testDropDatabaseThrowsException()
    {
        $this->assertEquals('DROP USER foobar CASCADE', $this->_platform->getDropDatabaseSql('foobar'));
    }

    public function testDropTable()
    {
        $this->assertEquals('DROP TABLE foobar', $this->_platform->getDropTableSql('foobar'));        
    }

    public function testGeneratesTypeDeclarationForIntegers()
    {
        $this->assertEquals(
            'NUMBER(10)',
            $this->_platform->getIntegerTypeDeclarationSql(array())
        );
        $this->assertEquals(
            'NUMBER(10)',
            $this->_platform->getIntegerTypeDeclarationSql(array('autoincrement' => true)
        ));
        $this->assertEquals(
            'NUMBER(10)',
            $this->_platform->getIntegerTypeDeclarationSql(
                array('autoincrement' => true, 'primary' => true)
        ));
    }

    public function testGeneratesTypeDeclarationsForStrings()
    {
        $this->assertEquals(
            'CHAR(10)',
            $this->_platform->getVarcharTypeDeclarationSql(
                array('length' => 10, 'fixed' => true)
        ));
        $this->assertEquals(
            'VARCHAR2(50)',
            $this->_platform->getVarcharTypeDeclarationSql(array('length' => 50)),
            'Variable string declaration is not correct'
        );
        $this->assertEquals(
            'VARCHAR2(4000)',
            $this->_platform->getVarcharTypeDeclarationSql(array()),
            'Long string declaration is not correct'
        );
    }

    public function testPrefersIdentityColumns()
    {
        $this->assertFalse($this->_platform->prefersIdentityColumns());
    }

    public function testSupportsIdentityColumns()
    {
        $this->assertFalse($this->_platform->supportsIdentityColumns());
    }

    public function testSupportsSavePoints()
    {
        $this->assertTrue($this->_platform->supportsSavepoints());   
    }
    
    public function getGenerateIndexSql()
    {
        return 'CREATE INDEX my_idx ON mytable (user_name, last_login)';
    }

    public function getGenerateUniqueIndexSql()
    {
        return 'CREATE UNIQUE INDEX index_name ON test (test, test2)';
    }

    public function getGenerateForeignKeySql()
    {
        return 'ALTER TABLE test ADD FOREIGN KEY (fk_name_id) REFERENCES other_table(id)';
    }

    public function testModifyLimitQuery()
    {
        $sql = $this->_platform->modifyLimitQuery('SELECT * FROM user', 10, 0);
        $this->assertEquals('SELECT a.* FROM (SELECT * FROM user) a WHERE ROWNUM <= 10', $sql);
    }

    public function testModifyLimitQueryWithEmptyOffset()
    {
        $sql = $this->_platform->modifyLimitQuery('SELECT * FROM user', 10);
        $this->assertEquals('SELECT a.* FROM (SELECT * FROM user) a WHERE ROWNUM <= 10', $sql);
    }

    public function testModifyLimitQueryWithAscOrderBy()
    {
        $sql = $this->_platform->modifyLimitQuery('SELECT * FROM user ORDER BY username ASC', 10);
        $this->assertEquals('SELECT a.* FROM (SELECT * FROM user ORDER BY username ASC) a WHERE ROWNUM <= 10', $sql);
    }

    public function testModifyLimitQueryWithDescOrderBy()
    {
        $sql = $this->_platform->modifyLimitQuery('SELECT * FROM user ORDER BY username DESC', 10);
        $this->assertEquals('SELECT a.* FROM (SELECT * FROM user ORDER BY username DESC) a WHERE ROWNUM <= 10', $sql);
    }
}