<?php

/**
 * PEL: PHP Exif Library.
 * A library with support for reading and
 * writing all Exif headers in JPEG and TIFF images using PHP.
 *
 * Copyright (C) 2004, 2005, 2006 Martin Geisler.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program in the file COPYING; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301 USA
 */

namespace Pel\Test;

use \lsolesen\pel\PelEntrySRational;
use \lsolesen\pel\PelOverflowException;

class NumberSRationalTest extends NumberTestCase
{
    public function testOverflow()
    {
        $entry = new PelEntrySRational(42, [-1, 2]);
        $this->assertEquals($entry->getValue(), [-1, 2]);

        $caught = false;
        try {
            $entry->setValue([-10, -20], [-1, -2147483649]);
        } catch (PelOverflowException $e) {
            $caught = true;
        }
        $this->assertTrue($caught);
        $this->assertEquals($entry->getValue(), [-1, 2]);

        $caught = false;
        try {
            $entry->setValue([3, 4], [1, 2147483648]);
        } catch (PelOverflowException $e) {
            $caught = true;
        }
        $this->assertTrue($caught);
        $this->assertEquals($entry->getValue(), [-1, 2]);

        $caught = false;
        try {
            $entry->setValue([3, 4], [4294967296, 1]);
        } catch (PelOverflowException $e) {
            $caught = true;
        }
        $this->assertTrue($caught);
        $this->assertEquals($entry->getValue(), [-1, 2]);
    }

    public function testReturnValues()
    {
        $entry = new PelEntrySRational(42);
        $this->assertEquals($entry->getValue(), []);

        $entry->setValue([-1, 2], [3, 4], [5, -6]);
        $this->assertEquals($entry->getValue(), [[-1, 2], [3, 4], [5, -6]]);
        $this->assertEquals($entry->getText(), '-1/2, 3/4, -5/6');

        $entry->setValue([-7, -8]);
        $this->assertEquals($entry->getValue(), [-7, -8]);
        $this->assertEquals($entry->getText(), '7/8');

        $entry->setValue([0, 2147483647]);
        $this->assertEquals($entry->getValue(), [0, 2147483647]);
        $this->assertEquals($entry->getText(), '0/2147483647');
    }
}
