<?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');
    }
}