<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Tests for PhpMyAdmin\Sql
 *
 * @package PhpMyAdmin-test
 */
namespace PhpMyAdmin\Tests;

use PhpMyAdmin\Sql;
use PHPUnit_Framework_TestCase as TestCase;
use stdClass;

/**
 * Tests for PhpMyAdmin\Sql
 *
 * @package PhpMyAdmin-test
 */
class SqlTest extends TestCase
{
    /**
     * Test Sql::getSqlWithLimitClause
     *
     * @return void
     */
    public function testGetSqlWithLimitClause()
    {
        // Test environment.
        $GLOBALS['_SESSION']['tmpval']['pos'] = 1;
        $GLOBALS['_SESSION']['tmpval']['max_rows'] = 2;
        $GLOBALS['db'] = 'db';

        $analyzed_sql_results = Sql::parseAndAnalyze(
            'SELECT * FROM test LIMIT 0, 10'
        );
        $this->assertEquals(
            'SELECT * FROM test LIMIT 1, 2 ',
            Sql::getSqlWithLimitClause($analyzed_sql_results)
        );
    }

    /**
     * Test Sql::isRememberSortingOrder
     *
     * @return void
     */
    public function testIsRememberSortingOrder()
    {
        // Test environment.
        $GLOBALS['cfg']['RememberSorting'] = true;
        $GLOBALS['db'] = 'db';

        $this->assertTrue(
            Sql::isRememberSortingOrder(
                Sql::parseAndAnalyze('SELECT * FROM tbl')
            )
        );

        $this->assertFalse(
            Sql::isRememberSortingOrder(
                Sql::parseAndAnalyze('SELECT col FROM tbl')
            )
        );

        $this->assertFalse(
            Sql::isRememberSortingOrder(
                Sql::parseAndAnalyze('SELECT 1')
            )
        );

        $this->assertFalse(
            Sql::isRememberSortingOrder(
                Sql::parseAndAnalyze('SELECT col1, col2 FROM tbl')
            )
        );

        $this->assertFalse(
            Sql::isRememberSortingOrder(
                Sql::parseAndAnalyze('SELECT COUNT(*) from tbl')
            )
        );
    }

    /**
     * Test Sql::isAppendLimitClause
     *
     * @return void
     */
    public function testIsAppendLimitClause()
    {
        // Test environment.
        $GLOBALS['_SESSION']['tmpval']['max_rows'] = 10;
        $GLOBALS['db'] = 'db';

        $this->assertTrue(
            Sql::isAppendLimitClause(
                Sql::parseAndAnalyze('SELECT * FROM tbl')
            )
        );

        $this->assertFalse(
            Sql::isAppendLimitClause(
                Sql::parseAndAnalyze('SELECT * from tbl LIMIT 0, 10')
            )
        );
    }

    /**
     * Test Sql::isJustBrowsing
     *
     * @return void
     */
    public function testIsJustBrowsing()
    {
        // Test environment.
        $GLOBALS['_SESSION']['tmpval']['max_rows'] = 10;
        $GLOBALS['db'] = 'db';

        $this->assertTrue(
            Sql::isJustBrowsing(
                Sql::parseAndAnalyze('SELECT * FROM db.tbl'),
                null
            )
        );

        $this->assertTrue(
            Sql::isJustBrowsing(
                Sql::parseAndAnalyze('SELECT * FROM tbl WHERE 1'),
                null
            )
        );

        $this->assertFalse(
            Sql::isJustBrowsing(
                Sql::parseAndAnalyze('SELECT * from tbl1, tbl2 LIMIT 0, 10'),
                null
            )
        );
    }

    /**
     * Test Sql::isDeleteTransformationInfo
     *
     * @return void
     */
    public function testIsDeleteTransformationInfo()
    {
        $this->assertTrue(
            Sql::isDeleteTransformationInfo(
                Sql::parseAndAnalyze('ALTER TABLE tbl DROP COLUMN col')
            )
        );

        $this->assertTrue(
            Sql::isDeleteTransformationInfo(
                Sql::parseAndAnalyze('DROP TABLE tbl')
            )
        );

        $this->assertFalse(
            Sql::isDeleteTransformationInfo(
                Sql::parseAndAnalyze('SELECT * from tbl')
            )
        );
    }

    /**
     * Test Sql::hasNoRightsToDropDatabase
     *
     * @return void
     */
    public function testHasNoRightsToDropDatabase()
    {
        $this->assertEquals(
            true,
            Sql::hasNoRightsToDropDatabase(
                Sql::parseAndAnalyze('DROP DATABASE db'),
                false,
                false
            )
        );

        $this->assertEquals(
            false,
            Sql::hasNoRightsToDropDatabase(
                Sql::parseAndAnalyze('DROP TABLE tbl'),
                false,
                false
            )
        );

        $this->assertEquals(
            false,
            Sql::hasNoRightsToDropDatabase(
                Sql::parseAndAnalyze('SELECT * from tbl'),
                false,
                false
            )
        );
    }

    /**
     * Should return false if all columns are not from the same table
     *
     * @return void
     */
    public function testWithMultipleTables()
    {
        $col1 = new stdClass;
        $col1->table = 'table1';
        $col2 = new stdClass;
        $col2->table = 'table1';
        $col3 = new stdClass;
        $col3->table = 'table3';

        $fields_meta = array($col1, $col2, $col3);
        $this->assertFalse(Sql::resultSetHasJustOneTable($fields_meta));

        // should not matter on where the odd column occurs
        $fields_meta = array($col2, $col3, $col1);
        $this->assertFalse(Sql::resultSetHasJustOneTable($fields_meta));

        $fields_meta = array($col3, $col1, $col2);
        $this->assertFalse(Sql::resultSetHasJustOneTable($fields_meta));
    }

    /**
     * Should return true if all the columns are from the same table
     *
     * @return void
     */
    public function testWithSameTable()
    {
        $col1 = new stdClass;
        $col1->table = 'table1';
        $col2 = new stdClass;
        $col2->table = 'table1';
        $col3 = new stdClass;
        $col3->table = 'table1';
        $fields_meta = array($col1, $col2, $col3);

        $this->assertTrue(Sql::resultSetHasJustOneTable($fields_meta));
    }

    /**
     * Should return true even if function columns (table is '') occur when others
     * are from the same table.
     *
     * @return void
     */
    public function testWithFunctionColumns()
    {
        $col1 = new stdClass;
        $col1->table = 'table1';
        $col2 = new stdClass;
        $col2->table = '';
        $col3 = new stdClass;
        $col3->table = 'table1';

        $fields_meta = array($col1, $col2, $col3);
        $this->assertTrue(Sql::resultSetHasJustOneTable($fields_meta));

        // should not matter on where the function column occurs
        $fields_meta = array($col2, $col3, $col1);
        $this->assertTrue(Sql::resultSetHasJustOneTable($fields_meta));

        $fields_meta = array($col3, $col1, $col2);
        $this->assertTrue(Sql::resultSetHasJustOneTable($fields_meta));
    }

    /**
     * We can not say all the columns are from the same table if all the columns
     * are funtion columns (table is '')
     *
     * @return void
     */
    public function testWithOnlyFunctionColumns()
    {
        $col1 = new stdClass;
        $col1->table = '';
        $col2 = new stdClass;
        $col2->table = '';
        $col3 = new stdClass;
        $col3->table = '';
        $fields_meta = array($col1, $col2, $col3);

        $this->assertFalse(Sql::resultSetHasJustOneTable($fields_meta));
    }
}