public function testCrc32Hash()
{
$hasher = new Crc32Hasher();
$result1 = $hasher->hash('test');
$result2 = $hasher->hash('test');
$result3 = $hasher->hash('different');
$this->assertEquals($result1, $result2);
$this->assertNotEquals($result1, $result3);
// fragile but worthwhile
}
public function testHasherSpeed()
{
$hashCount = 100000;
$md5Hasher = new Md5Hasher();
$crc32Hasher = new Crc32Hasher();
$start = microtime(true);
for ($i = 0; $i < $hashCount; $i++) {
$md5Hasher->hash("test{$i}");
}
$timeMd5 = microtime(true) - $start;
$start = microtime(true);
for ($i = 0; $i < $hashCount; $i++) {
$crc32Hasher->hash("test{$i}");
}
$timeCrc32 = microtime(true) - $start;
echo sprintf("\nHashers timed over %d hashes (MD5 / CRC32): %f / %f \n", $hashCount, $timeMd5, $timeCrc32);
}