Giorgio Sironi

<?php

class RegexTest extends PHPUnit_Framework_TestCase
{
    public function testSimpleRegex()
    {
        $this->assertEquals(1, preg_match('/foo/', 'foo'));
        $this->assertEquals(1, preg_match('/foo/', 'my fooooo'));
        $this->assertEquals(1, preg_match('/f.o/', 'my foo'));
        $this->assertEquals(1, preg_match('/[foym ]/', 'my foo'));
        $this->assertEquals(0, preg_match('/[fom ]{6}/', 'my foo'));
    }

    public function testMailAddresses()
    {
        $this->assertEquals(1, preg_match('/[a-z]{1,}@gmail.com/', 'address@gmail.com'));
        $this->assertEquals(0, preg_match('/[a-z]{1,}@gmail.com/', '@gmail.com'));
        $this->assertEquals(1, preg_match('/[a-z]{1,}@[a-z.]{3,}/', 'address@gmail.com'));
        $this->assertEquals(0, preg_match('/[a-z]{1,}@[a-z]{1,}\.[a-z.]{2,}/', 'address@gmail'));
        $this->assertEquals(1, preg_match('/[a-z]{1,}@[a-z]{1,}\.[a-z.]{2,}/', 'address@gmail.com'));
    }

    public function testBackReferences()
    {
        $matches = array();
        $this->assertEquals(1, preg_match('/([a-z]{1,})@[a-z.]{1,}/', 'address@gmail.com', $matches));
        $this->assertEquals('address', $matches[1]);

        $matches = array();
        $this->assertEquals(1, preg_match('/([a-z]{1,})@([a-z.]{1,}\.([a-z]{1,}))/', 'address@gmail.com', $matches));
        $this->assertEquals('address', $matches[1]);
        $this->assertEquals('gmail.com', $matches[2]);
        $this->assertEquals('com', $matches[3]);
    }
}