<?php
/**
 * Utilities' tests
 */

require_once 'application/Utils.php';

/**
 * Unitary tests for Shaarli utilities
 */
class UtilsTest extends PHPUnit_Framework_TestCase
{
    /**
     * Represent a link by its hash
     */
    public function testSmallHash()
    {
        $this->assertEquals('CyAAJw', smallHash('http://test.io'));
        $this->assertEquals(6, strlen(smallHash('https://github.com')));
    }

    /**
     * Look for a substring at the beginning of a string
     */
    public function testStartsWithCaseInsensitive()
    {
        $this->assertTrue(startsWith('Lorem ipsum', 'lorem', false));
        $this->assertTrue(startsWith('Lorem ipsum', 'LoReM i', false));
    }

    /**
     * Look for a substring at the beginning of a string (case-sensitive)
     */
    public function testStartsWithCaseSensitive()
    {
        $this->assertTrue(startsWith('Lorem ipsum', 'Lorem', true));
        $this->assertFalse(startsWith('Lorem ipsum', 'lorem', true));
        $this->assertFalse(startsWith('Lorem ipsum', 'LoReM i', true));
    }

    /**
     * Look for a substring at the beginning of a string (Unicode)
     */
    public function testStartsWithSpecialChars()
    {
        $this->assertTrue(startsWith('å!ùµ', 'å!', false));
        $this->assertTrue(startsWith('µ$åù', 'µ$', true));
    }

    /**
     * Look for a substring at the end of a string
     */
    public function testEndsWithCaseInsensitive()
    {
        $this->assertTrue(endsWith('Lorem ipsum', 'ipsum', false));
        $this->assertTrue(endsWith('Lorem ipsum', 'm IpsUM', false));
    }

    /**
     * Look for a substring at the end of a string (case-sensitive)
     */
    public function testEndsWithCaseSensitive()
    {
        $this->assertTrue(endsWith('lorem Ipsum', 'Ipsum', true));
        $this->assertFalse(endsWith('lorem Ipsum', 'ipsum', true));
        $this->assertFalse(endsWith('lorem Ipsum', 'M IPsuM', true));
    }

    /**
     * Look for a substring at the end of a string (Unicode)
     */
    public function testEndsWithSpecialChars()
    {
        $this->assertTrue(endsWith('å!ùµ', 'ùµ', false));
        $this->assertTrue(endsWith('µ$åù', 'åù', true));
    }

    /**
     * Check valid date strings, according to a DateTime format
     */
    public function testCheckValidDateFormat()
    {
        $this->assertTrue(checkDateFormat('Ymd', '20150627'));
        $this->assertTrue(checkDateFormat('Y-m-d', '2015-06-27'));
    }

    /**
     * Check erroneous date strings, according to a DateTime format
     */
    public function testCheckInvalidDateFormat()
    {
        $this->assertFalse(checkDateFormat('Ymd', '2015'));
        $this->assertFalse(checkDateFormat('Y-m-d', '2015-06'));
        $this->assertFalse(checkDateFormat('Ymd', 'DeLorean'));
    }

    /**
     * Test generate location with valid data.
     */
    public function testGenerateLocation() {
        $ref = 'http://localhost/?test';
        $this->assertEquals($ref, generateLocation($ref, 'localhost'));
        $ref = 'http://localhost:8080/?test';
        $this->assertEquals($ref, generateLocation($ref, 'localhost:8080'));
    }

    /**
     * Test generate location - anti loop.
     */
    public function testGenerateLocationLoop() {
        $ref = 'http://localhost/?test';
        $this->assertEquals('?', generateLocation($ref, 'localhost', array('test')));
    }

    /**
     * Test generate location - from other domain.
     */
    public function testGenerateLocationOut() {
        $ref = 'http://somewebsite.com/?test';
        $this->assertEquals('?', generateLocation($ref, 'localhost'));
    }

    /**
     * Check supported PHP versions
     */
    public function testCheckSupportedPHPVersion()
    {
        $minVersion = '5.3';
        checkPHPVersion($minVersion, '5.4.32');
        checkPHPVersion($minVersion, '5.5');
        checkPHPVersion($minVersion, '5.6.10');
    }

    /**
     * Check a unsupported PHP version
     * @expectedException              Exception
     * @expectedExceptionMessageRegExp /Your PHP version is obsolete/
     */
    public function testCheckSupportedPHPVersion51()
    {
        checkPHPVersion('5.3', '5.1.0');
    }

    /**
     * Check another unsupported PHP version
     * @expectedException              Exception
     * @expectedExceptionMessageRegExp /Your PHP version is obsolete/
     */
    public function testCheckSupportedPHPVersion52()
    {
        checkPHPVersion('5.3', '5.2');
    }

    /**
     * Test is_session_id_valid with a valid ID.
     */
    public function testIsSessionIdValid()
    {
        $this->assertTrue(is_session_id_valid('123456789012345678901234567890az'));
    }

    /**
     * Test is_session_id_valid with invalid IDs.
     */
    public function testIsSessionIdInvalid()
    {
        $this->assertFalse(is_session_id_valid(''));
        $this->assertFalse(is_session_id_valid(array()));
        $this->assertFalse(is_session_id_valid('c0ZqcWF3VFE2NmJBdm1HMVQ0ZHJ3UmZPbTFsNGhkNHI='));
    }
}