/tests/TestRedis.php

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<?php
require_once 'PHPUnit/Framework/TestCase.php';

echo "Note: these tests might take up to a minute. Don't worry :-)\n";

class Redis_Test extends PHPUnit_Framework_TestCase
{
	const HOST = '127.0.0.1';
	const PORT = 6379;
	const AUTH = NULL; //replace with a string to use Redis authentication

    /**
     * @var Redis
     */
    public $redis;

    public function setUp()
    {
	$this->redis = $this->newInstance();
    }

    private function newInstance() {
	$r = new Redis();
	$r->connect(self::HOST, self::PORT);

	if(self::AUTH) {
		$this->assertTrue($r->auth(self::AUTH));
	}
	return $r;
    }

    public function tearDown()
    {
	if($this->redis) {
	    $this->redis->close();
	}
        unset($this->redis);
    }

    public function reset()
    {
        $this->setUp();
        $this->tearDown();
    }

    public function testPing()
    {

	$this->assertEquals('+PONG', $this->redis->ping());

	$count = 1000;
	while($count --) {
	    	$this->assertEquals('+PONG', $this->redis->ping());
	}

    }

    public function testBitsets() {

	    $this->redis->delete('key');
	    $this->assertTrue(0 === $this->redis->getBit('key', 0));
	    $this->assertTrue(FALSE === $this->redis->getBit('key', -1));
	    $this->assertTrue(0 === $this->redis->getBit('key', 100000));

	    $this->redis->set('key', "\xff");
	    for($i = 0; $i < 8; $i++) {
		    $this->assertTrue(1 === $this->redis->getBit('key', $i));
	    }
	    $this->assertTrue(0 === $this->redis->getBit('key', 8));

	    // negative offset doesn't work
	    $this->assertTrue(FALSE === $this->redis->setBit('key', -1, 0));
	    $this->assertTrue(1 === $this->redis->getBit('key', 0));

	    // change bit 0
	    $this->assertTrue(1 === $this->redis->setBit('key', 0, 0));
	    $this->assertTrue(0 === $this->redis->setBit('key', 0, 0));
	    $this->assertTrue(0 === $this->redis->getBit('key', 0));
	    $this->assertTrue("\x7f" === $this->redis->get('key'));

	    // change bit 1
	    $this->assertTrue(1 === $this->redis->setBit('key', 1, 0));
	    $this->assertTrue(0 === $this->redis->setBit('key', 1, 0));
	    $this->assertTrue(0 === $this->redis->getBit('key', 1));
	    $this->assertTrue("\x3f" === $this->redis->get('key'));

	    // change bit > 1
	    $this->assertTrue(1 === $this->redis->setBit('key', 2, 0));
	    $this->assertTrue(0 === $this->redis->setBit('key', 2, 0));
	    $this->assertTrue(0 === $this->redis->getBit('key', 2));
	    $this->assertTrue("\x1f" === $this->redis->get('key'));

	    // values above 1 are changed to 1 but don't overflow on bits to the right.
	    $this->assertTrue(0 === $this->redis->setBit('key', 0, 0xff));
	    $this->assertTrue("\x9f" === $this->redis->get('key'));
    }

    public function test1000() {

	 $s = str_repeat('A', 1000);
	 $this->redis->set('x', $s);
	 $this->assertEquals($s, $this->redis->get('x'));

	 $s = str_repeat('A', 1000000);
	 $this->redis->set('x', $s);
	 $this->assertEquals($s, $this->redis->get('x'));
    }

    public function testErr() {

	 $this->redis->set('x', '-ERR');
	 $this->assertEquals($this->redis->get('x'), '-ERR');

    }

    public function testSet()
    {
	$this->assertEquals(TRUE, $this->redis->set('key', 'nil'));
	$this->assertEquals('nil', $this->redis->get('key'));

      	$this->assertEquals(TRUE, $this->redis->set('key', 'val'));

	$this->assertEquals('val', $this->redis->get('key'));
	$this->assertEquals('val', $this->redis->get('key'));
	$this->redis->delete('keyNotExist');
	$this->assertEquals(FALSE, $this->redis->get('keyNotExist'));

	$this->redis->set('key2', 'val');
	$this->assertEquals('val', $this->redis->get('key2'));

     	$value = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA';
	$this->redis->set('key2', $value);
	$this->assertEquals($value, $this->redis->get('key2'));
	$this->assertEquals($value, $this->redis->get('key2'));

	$this->redis->delete('key');
	$this->redis->delete('key2');


	$i = 66000;
	$value2 = 'X';
	while($i--) {
		$value2 .= 'A';
	}
	$value2 .= 'X';

	$this->redis->set('key', $value2);
        $this->assertEquals($value2, $this->redis->get('key'));
	$this->redis->delete('key');
	$this->assertEquals(False, $this->redis->get('key'));

	$data = gzcompress('42');
        $this->assertEquals(True, $this->redis->set('key', $data));
	$this->assertEquals('42', gzuncompress($this->redis->get('key')));

	$this->redis->delete('key');
	$data = gzcompress('value1');
        $this->assertEquals(True, $this->redis->set('key', $data));
	$this->assertEquals('value1', gzuncompress($this->redis->get('key')));

	$this->redis->delete('key');
       	$this->assertEquals(TRUE, $this->redis->set('key', 0));
	$this->assertEquals('0', $this->redis->get('key'));
       	$this->assertEquals(TRUE, $this->redis->set('key', 1));
	$this->assertEquals('1', $this->redis->get('key'));
	$this->assertEquals(TRUE, $this->redis->set('key', 0.1));
	$this->assertEquals('0.1', $this->redis->get('key'));
	$this->assertEquals(TRUE, $this->redis->set('key', '0.1'));
	$this->assertEquals('0.1', $this->redis->get('key'));
       	$this->assertEquals(TRUE, $this->redis->set('key', TRUE));
	$this->assertEquals('1', $this->redis->get('key'));

	$this->assertEquals(True, $this->redis->set('key', ''));
       	$this->assertEquals('', $this->redis->get('key'));
	$this->assertEquals(True, $this->redis->set('key', NULL));
	$this->assertEquals('', $this->redis->get('key'));

        $this->assertEquals(True, $this->redis->set('key', gzcompress('42')));
        $this->assertEquals('42', gzuncompress($this->redis->get('key')));

    }
    public function testGetSet() {

	$this->redis->delete('key');
	$this->assertTrue($this->redis->getSet('key', '42') === FALSE);
	$this->assertTrue($this->redis->getSet('key', '123') === '42');
	$this->assertTrue($this->redis->getSet('key', '123') === '123');
    }

    public function testRandomKey() {

        for($i = 0; $i < 1000; $i++) {
            $k = $this->redis->randomKey();
	    $this->assertTrue($this->redis->exists($k));
	}
    }

    public function testRename() {

	// strings
	$this->redis->delete('key0');
	$this->redis->set('key0', 'val0');
	$this->redis->renameKey('key0', 'key1');
	$this->assertTrue($this->redis->get('key0') === FALSE);
	$this->assertTrue($this->redis->get('key1') === 'val0');


	// lists
	$this->redis->delete('key0');
	$this->redis->lPush('key0', 'val0');
	$this->redis->lPush('key0', 'val1');
	$this->redis->renameKey('key0', 'key1');
	$this->assertTrue($this->redis->lGetRange('key0', 0, -1) === array());
	$this->assertTrue($this->redis->lGetRange('key1', 0, -1) === array('val1', 'val0'));

    }

    public function testRenameNx() {

	// strings
	$this->redis->delete('key0');
	$this->redis->set('key0', 'val0');
	$this->redis->set('key1', 'val1');
	$this->assertTrue($this->redis->renameNx('key0', 'key1') === FALSE);
	$this->assertTrue($this->redis->get('key0') === 'val0');
	$this->assertTrue($this->redis->get('key1') === 'val1');

	// lists
	$this->redis->delete('key0');
	$this->redis->delete('key1');
	$this->redis->lPush('key0', 'val0');
	$this->redis->lPush('key0', 'val1');
	$this->redis->lPush('key1', 'val1-0');
	$this->redis->lPush('key1', 'val1-1');
	$this->redis->renameNx('key0', 'key1');
	$this->assertTrue($this->redis->lGetRange('key0', 0, -1) === array('val1', 'val0'));
	$this->assertTrue($this->redis->lGetRange('key1', 0, -1) === array('val1-1', 'val1-0'));

	$this->redis->delete('key2');
	$this->redis->renameNx('key0', 'key2');
	$this->assertTrue($this->redis->lGetRange('key0', 0, -1) === array());
	$this->assertTrue($this->redis->lGetRange('key2', 0, -1) === array('val1', 'val0'));

    }

    public function testMultiple() {

    	$this->redis->delete('k1');
      	$this->redis->delete('k2');
      	$this->redis->delete('k3');

	$this->redis->set('k1', 'v1');
	$this->redis->set('k2', 'v2');
	$this->redis->set('k3', 'v3');
	$this->redis->set(1, 'test');

	$this->assertEquals(array('v1'), $this->redis->getMultiple(array('k1')));
	$this->assertEquals(array('v1', 'v3', false), $this->redis->getMultiple(array('k1', 'k3', 'NoKey')));
	$this->assertEquals(array('v1', 'v2', 'v3'), $this->redis->getMultiple(array('k1', 'k2', 'k3')));
	$this->assertEquals(array('v1', 'v2', 'v3'), $this->redis->getMultiple(array('k1', 'k2', 'k3')));

	$this->redis->set('k5', '$1111111111');
	$this->assertEquals(array(0 => '$1111111111'), $this->redis->getMultiple(array('k5')));

	$this->assertEquals(array(0 => 'test'), $this->redis->getMultiple(array(1))); // non-string
    }

    public function testMultipleBin() {

   	$this->redis->delete('k1');
      	$this->redis->delete('k2');
      	$this->redis->delete('k3');

	$this->redis->set('k1', gzcompress('v1'));
	$this->redis->set('k2', gzcompress('v2'));
	$this->redis->set('k3', gzcompress('v3'));

	$this->assertEquals(array(gzcompress('v1'), gzcompress('v2'), gzcompress('v3')), $this->redis->getMultiple(array('k1', 'k2', 'k3')));
	$this->assertEquals(array(gzcompress('v1'), gzcompress('v2'), gzcompress('v3')), $this->redis->getMultiple(array('k1', 'k2', 'k3')));

    }

    public function testSetTimeout() {

	$this->redis->delete('key');
        $this->redis->set('key', 'value');
	$this->assertEquals('value', $this->redis->get('key'));
	$this->redis->setTimeout('key', 1);
	$this->assertEquals('value', $this->redis->get('key'));
	sleep(2);
	$this->assertEquals(False, $this->redis->get('key'));
    }

    public function testExpireAt() {

	$this->redis->delete('key');
        $this->redis->set('key', 'value');
	$now = time(NULL);
	$this->redis->expireAt('key', $now + 1);
	$this->assertEquals('value', $this->redis->get('key'));
	sleep(2);
	$this->assertEquals(FALSE, $this->redis->get('key'));
    }

    public function testSetEx() {

	    $this->redis->delete('key');
	    $this->assertTrue($this->redis->setex('key', 7, 'val') === TRUE);
	    $this->assertTrue($this->redis->ttl('key') ===7);
	    $this->assertTrue($this->redis->get('key') === 'val');
    }

    public function testSetNX() {

	    $this->redis->set('key', 42);
	    $this->assertTrue($this->redis->setnx('key', 'err') === FALSE);
	    $this->assertTrue($this->redis->get('key') === '42');

	    $this->redis->delete('key');
	    $this->assertTrue($this->redis->setnx('key', '42') === TRUE);
	    $this->assertTrue($this->redis->get('key') === '42');
    }

    public function testIncr()
    {
        $this->redis->set('key', 0);

        $this->redis->incr('key');
	$this->assertEquals(1, $this->redis->get('key'));

        $this->redis->incr('key');
	$this->assertEquals(2, $this->redis->get('key'));

        $this->redis->incr('key', 3);
	$this->assertEquals(5, $this->redis->get('key'));

	$this->redis->incrBy('key', 3);
	$this->assertEquals(8, $this->redis->get('key'));

	$this->redis->incrBy('key', 1);
	$this->assertEquals(9, $this->redis->get('key'));

	$this->redis->incrBy('key', -1);
	$this->assertEquals(8, $this->redis->get('key'));

	$this->redis->delete('key');

	$this->redis->set('key', 'abc');

	$this->redis->incr('key');
	$this->assertTrue("abc" === $this->redis->get('key'));

	$this->redis->incr('key');
	$this->assertTrue("abc" === $this->redis->get('key'));

    }

    public function testDecr()
    {
        $this->redis->set('key', 5);

        $this->redis->decr('key');
	$this->assertEquals(4, $this->redis->get('key'));

        $this->redis->decr('key');
	$this->assertEquals(3, $this->redis->get('key'));

        $this->redis->decr('key', 2);
	$this->assertEquals(1, $this->redis->get('key'));

	$this->redis->decr('key', 2);
	$this->assertEquals(-1, $this->redis->get('key'));

	$this->redis->decrBy('key', 2);
	$this->assertEquals(-3, $this->redis->get('key'));

	$this->redis->decrBy('key', 1);
	$this->assertEquals(-4, $this->redis->get('key'));

	$this->redis->decr('key', -10);
	$this->assertEquals(6, $this->redis->get('key'));
    }

    public function testExists()
    {

    	$this->redis->delete('key');
        $this->assertFalse($this->redis->exists('key'));
        $this->redis->set('key', 'val');
        $this->assertEquals(True, $this->redis->exists('key'));
    }

    public function testGetKeys()
    {

        $pattern = 'getKeys-test-';
	for($i = 1; $i < 10; $i++) {
	    $this->redis->set($pattern.$i, $i);
        }
        $this->redis->delete($pattern.'3');
        $keys = $this->redis->getKeys($pattern.'*');

	$this->redis->set($pattern.'3', 'something');

        $keys2 = $this->redis->getKeys($pattern.'*');

        $this->assertEquals((count($keys) + 1), count($keys2));

	// empty array when no key matches
        $this->assertEquals(array(), $this->redis->getKeys(rand().rand().rand().'*'));
    }

    public function testDelete()
    {
      	$key = 'key' . rand();
        $this->redis->set($key, 'val');
        $this->assertEquals('val', $this->redis->get($key));
	$this->assertEquals(1, $this->redis->delete($key));
        $this->assertEquals(null, $this->redis->get($key));

	// multiple, all existing
	$this->redis->set('x', 0);
	$this->redis->set('y', 1);
	$this->redis->set('z', 2);
	$this->assertEquals(3, $this->redis->delete('x', 'y', 'z'));
	$this->assertEquals(NULL, $this->redis->get('x'));
	$this->assertEquals(NULL, $this->redis->get('y'));
	$this->assertEquals(NULL, $this->redis->get('z'));

	// multiple, none existing
	$this->assertEquals(0, $this->redis->delete('x', 'y', 'z'));
	$this->assertEquals(NULL, $this->redis->get('x'));
	$this->assertEquals(NULL, $this->redis->get('y'));
	$this->assertEquals(NULL, $this->redis->get('z'));

	// multiple, some existing
	$this->redis->set('y', 1);
	$this->assertEquals(1, $this->redis->delete('x', 'y', 'z'));
	$this->assertEquals(NULL, $this->redis->get('y'));

	$this->redis->set('x', 0);
	$this->redis->set('y', 1);
	$this->assertEquals(2, $this->redis->delete(array('x', 'y')));

    }

    public function testType()
    {
	// 0 => none, (key didn't exist)
	// 1=> string,
	// 2 => set,
	// 3 => list,
	// 4 => zset,
	// 5 => hash

	// string
	$this->redis->set('key', 'val');
	$this->assertEquals(Redis::REDIS_STRING, $this->redis->type('key'));

	// list
	$this->redis->lPush('keyList', 'val0');
	$this->redis->lPush('keyList', 'val1');
	$this->assertEquals(Redis::REDIS_LIST, $this->redis->type('keyList'));

	// set
	$this->redis->delete('keySet');
	$this->redis->sAdd('keySet', 'val0');
	$this->redis->sAdd('keySet', 'val1');
	$this->assertEquals(Redis::REDIS_SET, $this->redis->type('keySet'));

	// zset
	$this->redis->delete('keyZSet');
	$this->redis->zAdd('keyZSet', 0, 'val0');
	$this->redis->zAdd('keyZSet', 1, 'val1');
	$this->assertEquals(Redis::REDIS_ZSET, $this->redis->type('keyZSet'));

	// hash
	$this->redis->delete('keyHash');
	$this->redis->hSet('keyHash', 'key0', 'val0');
	$this->redis->hSet('keyHash', 'key1', 'val1');
	$this->assertEquals(Redis::REDIS_HASH, $this->redis->type('keyHash'));

	//None
	$this->assertEquals(Redis::REDIS_NOT_FOUND, $this->redis->type('keyNotExists'));
    }

	public function testStr() {

		$this->redis->set('key', 'val1');
		$this->assertTrue($this->redis->append('key', 'val2') === 8);
		$this->assertTrue($this->redis->get('key') === 'val1val2');

		$this->assertTrue($this->redis->append('keyNotExist', 'value') === 5);
		$this->assertTrue($this->redis->get('keyNotExist') === 'value');

		$this->redis->set('key', 'This is a string') ;
		$this->assertTrue($this->redis->getRange('key', 0, 3) === 'This');
		$this->assertTrue($this->redis->getRange('key', -6, -1) === 'string');
		$this->assertTrue($this->redis->getRange('key', -6, 100000) === 'string');
		$this->assertTrue($this->redis->get('key') === 'This is a string');

		$this->redis->set('key', 'This is a string') ;
		$this->assertTrue($this->redis->strlen('key') === 16);

		$this->redis->set('key', 10) ;
		$this->assertTrue($this->redis->strlen('key') === 2);
		$this->redis->set('key', '') ;
		$this->assertTrue($this->redis->strlen('key') === 0);
		$this->redis->set('key', '000') ;
		$this->assertTrue($this->redis->strlen('key') === 3);
	}

    // PUSH, POP : LPUSH, LPOP
    public function testlPop()
    {

	//	rpush  => tail
	//	lpush => head


        $this->redis->delete('list');

        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
	$this->redis->rPush('list', 'val3');

	// 'list' = [ 'val2', 'val', 'val3']

	$this->assertEquals('val2', $this->redis->lPop('list'));
        $this->assertEquals('val', $this->redis->lPop('list'));
        $this->assertEquals('val3', $this->redis->lPop('list'));
        $this->assertEquals(FALSE, $this->redis->lPop('list'));

	// testing binary data

	$this->redis->delete('list');
	$this->assertEquals(1, $this->redis->lPush('list', gzcompress('val1')));
	$this->assertEquals(2, $this->redis->lPush('list', gzcompress('val2')));
	$this->assertEquals(3, $this->redis->lPush('list', gzcompress('val3')));

	$this->assertEquals('val3', gzuncompress($this->redis->lPop('list')));
	$this->assertEquals('val2', gzuncompress($this->redis->lPop('list')));
	$this->assertEquals('val1', gzuncompress($this->redis->lPop('list')));

    }

    // PUSH, POP : RPUSH, RPOP
    public function testrPop()
    {
	//	rpush  => tail
	//	lpush => head

        $this->redis->delete('list');

        $this->redis->rPush('list', 'val');
        $this->redis->rPush('list', 'val2');
	$this->redis->lPush('list', 'val3');

	// 'list' = [ 'val3', 'val', 'val2']

	$this->assertEquals('val2', $this->redis->rPop('list'));
        $this->assertEquals('val', $this->redis->rPop('list'));
        $this->assertEquals('val3', $this->redis->rPop('list'));
        $this->assertEquals(FALSE, $this->redis->rPop('list'));

	// testing binary data

	$this->redis->delete('list');
	$this->assertEquals(1, $this->redis->rPush('list', gzcompress('val1')));
	$this->assertEquals(2, $this->redis->rPush('list', gzcompress('val2')));
	$this->assertEquals(3, $this->redis->rPush('list', gzcompress('val3')));

	$this->assertEquals('val3', gzuncompress($this->redis->rPop('list')));
	$this->assertEquals('val2', gzuncompress($this->redis->rPop('list')));
	$this->assertEquals('val1', gzuncompress($this->redis->rPop('list')));

    }

	public function testblockingPop() {

	// non blocking blPop, brPop
        $this->redis->delete('list');
        $this->redis->lPush('list', 'val1');
        $this->redis->lPush('list', 'val2');
		$this->assertTrue($this->redis->blPop(array('list'), 2) === array('list', 'val2'));
		$this->assertTrue($this->redis->blPop(array('list'), 2) === array('list', 'val1'));

        $this->redis->delete('list');
        $this->redis->lPush('list', 'val1');
        $this->redis->lPush('list', 'val2');
	$this->assertTrue($this->redis->brPop(array('list'), 1) === array('list', 'val1'));
	$this->assertTrue($this->redis->brPop(array('list'), 1) === array('list', 'val2'));

	// blocking blpop, brpop
        $this->redis->delete('list');
	$this->assertTrue($this->redis->blPop(array('list'), 1) === array());
	$this->assertTrue($this->redis->brPop(array('list'), 1) === array());

	// TODO: fix this broken test.
//		$this->redis->delete('list');
//		$params = array(
//			0 => array("pipe", "r"), 
//			1 => array("pipe", "w"),
//			2 => array("file", "/dev/null", "w")
//		);
//		if(function_exists('proc_open')) {
//			$env = array('PHPREDIS_key' =>'list', 'PHPREDIS_value' => 'value');
//			$process = proc_open('php', $params, $pipes, '/tmp', $env);
//	
//			if (is_resource($process)) {
//				fwrite($pipes[0],  '<?php 
//	sleep(2);
//	$r = new Redis;
//	$r->connect("'.self::HOST.'", '.self::PORT.');
//	if("'.addslashes(self::AUTH).'") {
//		$r->auth("'.addslashes(self::AUTH).'");
//	}
//	$r->lPush($_ENV["PHPREDIS_key"], $_ENV["PHPREDIS_value"]);
//	?' . '>');
//	
//				fclose($pipes[0]);
//				fclose($pipes[1]);
//				$re = proc_close($process);
//	
//				$this->assertTrue($this->redis->blPop(array('list'), 5) === array("list", "value"));
//			}
//		}

    }

    public function testlSize()
    {

        $this->redis->delete('list');

        $this->redis->lPush('list', 'val');
        $this->assertEquals(1, $this->redis->lSize('list'));

        $this->redis->lPush('list', 'val2');
        $this->assertEquals(2, $this->redis->lSize('list'));

	$this->assertEquals('val2', $this->redis->lPop('list'));
        $this->assertEquals(1, $this->redis->lSize('list'));

	$this->assertEquals('val', $this->redis->lPop('list'));
        $this->assertEquals(0, $this->redis->lSize('list'));

        $this->assertEquals(FALSE, $this->redis->lPop('list'));
        $this->assertEquals(0, $this->redis->lSize('list'));	// empty returns 0

        $this->redis->delete('list');
        $this->assertEquals(0, $this->redis->lSize('list'));	// non-existent returns 0

        $this->redis->set('list', 'actually not a list');
        $this->assertEquals(FALSE, $this->redis->lSize('list'));// not a list returns FALSE
    }

    //lInsert, lPopx, rPopx
    public function testlPopx() {	
		//test lPushx/rPushx  
		$this->redis->delete('keyNotExists');
		$this->assertTrue($this->redis->lPushx('keyNotExists', 'value') === 0);
		$this->assertTrue($this->redis->rPushx('keyNotExists', 'value') === 0);

		$this->redis->delete('key');
		$this->redis->lPush('key', 'val0');
		$this->assertTrue($this->redis->lPushx('key', 'val1') === 2);
		$this->assertTrue($this->redis->rPushx('key', 'val2') === 3);
		$this->assertTrue($this->redis->lGetRange('key', 0, -1) === array('val1', 'val0', 'val2'));

		//test linsert
		$this->redis->delete('key');
		$this->redis->lPush('key', 'val0');
		$this->assertTrue($this->redis->lInsert('keyNotExists', Redis::AFTER, 'val1', 'val2') === 0);
		$this->assertTrue($this->redis->lInsert('key', Redis::BEFORE, 'valX', 'val2') === -1);

		$this->assertTrue($this->redis->lInsert('key', Redis::AFTER, 'val0', 'val1') === 2);
		$this->assertTrue($this->redis->lInsert('key', Redis::BEFORE, 'val0', 'val2') === 3);
		$this->assertTrue($this->redis->lGetRange('key', 0, -1) === array('val2', 'val0', 'val1'));
    }

    // ltrim, lsize, lpop
    public function testlistTrim()
    {

    	$this->redis->delete('list');

        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
        $this->redis->lPush('list', 'val3');
        $this->redis->lPush('list', 'val4');

	$this->assertEquals(TRUE, $this->redis->listTrim('list', 0, 2));
	$this->assertEquals(3, $this->redis->lSize('list'));

        $this->redis->listTrim('list', 0, 0);
        $this->assertEquals(1, $this->redis->lSize('list'));
	$this->assertEquals('val4', $this->redis->lPop('list'));

	$this->assertEquals(TRUE, $this->redis->listTrim('list', 10, 10000));
	$this->assertEquals(TRUE, $this->redis->listTrim('list', 10000, 10));

	// test invalid type
	$this->redis->set('list', 'not a list...');
	$this->assertEquals(FALSE, $this->redis->listTrim('list', 0, 2));

    }

    public function setupSort() {
	// people with name, age, salary
	$this->redis->set('person:name_1', 'Alice');
	$this->redis->set('person:age_1', 27);
	$this->redis->set('person:salary_1', 2500);

	$this->redis->set('person:name_2', 'Bob');
	$this->redis->set('person:age_2', 34);
	$this->redis->set('person:salary_2', 2000);

	$this->redis->set('person:name_3', 'Carol');
	$this->redis->set('person:age_3', 25);
	$this->redis->set('person:salary_3', 2800);

	$this->redis->set('person:name_4', 'Dave');
	$this->redis->set('person:age_4', 41);
	$this->redis->set('person:salary_4', 3100);

	// set-up
	$this->redis->delete('person:id');
	foreach(array(1,2,3,4) as $id) {
	    $this->redis->lPush('person:id', $id);
	}

    }

    public function testSortAsc() {

	$this->setupSort();

	$this->assertTrue(FALSE === $this->redis->sortAsc(NULL));

	// sort by age and get IDs
	$byAgeAsc = array('3','1','2','4');
	$this->assertEquals($byAgeAsc, $this->redis->sortAsc('person:id', 'person:age_*'));
	$this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'sort' => 'asc')));
	$this->assertEquals(array('1', '2', '3', '4'), $this->redis->sortAsc('person:id', NULL));	// check that NULL works.
	$this->assertEquals(array('1', '2', '3', '4'), $this->redis->sortAsc('person:id', NULL, NULL));	// for all fields.
	$this->assertEquals(array('1', '2', '3', '4'), $this->redis->sort('person:id', array('sort' => 'asc')));

	// sort by age and get names
	$byAgeAsc = array('Carol','Alice','Bob','Dave');
	$this->assertEquals($byAgeAsc, $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*'));
	$this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'sort' => 'asc')));

	$this->assertEquals(array_slice($byAgeAsc, 0, 2), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', 0, 2));
	$this->assertEquals(array_slice($byAgeAsc, 0, 2), $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array(0, 2), 'sort' => 'asc')));

	$this->assertEquals(array_slice($byAgeAsc, 1, 2), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', 1, 2));
	$this->assertEquals(array_slice($byAgeAsc, 1, 2), $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array(1, 2), 'sort' => 'asc')));
	$this->assertEquals(array_slice($byAgeAsc, 0, 3), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', NULL, 3)); // NULL is transformed to 0 if there is something after it.
	$this->assertEquals($byAgeAsc, $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', 0, 4));
	$this->assertEquals($byAgeAsc, $this->redis->sort('person:id', array('by' => 'person:age_*', 'get' => 'person:name_*', 'limit' => array(0, 4))));
	$this->assertEquals(array(), $this->redis->sortAsc('person:id', 'person:age_*', 'person:name_*', NULL, NULL)); // NULL, NULL is the same as (0,0). That returns no element.

	// sort by salary and get ages
	$agesBySalaryAsc = array('34', '27', '25', '41');
	$this->assertEquals($agesBySalaryAsc, $this->redis->sortAsc('person:id', 'person:salary_*', 'person:age_*'));
	$this->assertEquals($agesBySalaryAsc, $this->redis->sort('person:id', array('by' => 'person:salary_*', 'get' => 'person:age_*', 'sort' => 'asc')));

	$agesAndSalaries = $this->redis->sort('person:id', array('by' => 'person:salary_*', 'get' => array('person:age_*', 'person:salary_*'), 'sort' => 'asc'));
	$this->assertEquals(array('34', '2000', '27', '2500', '25', '2800', '41', '3100'), $agesAndSalaries);


	// sort non-alpha doesn't change all-string lists
	// list → [ghi, def, abc]
	$list = array('abc', 'def', 'ghi');
	$this->redis->delete('list');
	foreach($list as $i) {
	    $this->redis->lPush('list', $i);
	}

	// SORT list → [ghi, def, abc]
	$this->assertEquals(array_reverse($list), $this->redis->sortAsc('list'));
	$this->assertEquals(array_reverse($list), $this->redis->sort('list', array('sort' => 'asc')));

	// SORT list ALPHA → [abc, def, ghi]
	$this->assertEquals($list, $this->redis->sortAscAlpha('list'));
	$this->assertEquals($list, $this->redis->sort('list', array('sort' => 'asc', 'alpha' => TRUE)));
    }

    public function testSortDesc() {

	$this->setupSort();

	// sort by age and get IDs
	$byAgeDesc = array('4','2','1','3');
	$this->assertEquals($byAgeDesc, $this->redis->sortDesc('person:id', 'person:age_*'));

	// sort by age and get names
	$byAgeDesc = array('Dave', 'Bob', 'Alice', 'Carol');
	$this->assertEquals($byAgeDesc, $this->redis->sortDesc('person:id', 'person:age_*', 'person:name_*'));

	$this->assertEquals(array_slice($byAgeDesc, 0, 2), $this->redis->sortDesc('person:id', 'person:age_*', 'person:name_*', 0, 2));
	$this->assertEquals(array_slice($byAgeDesc, 1, 2), $this->redis->sortDesc('person:id', 'person:age_*', 'person:name_*', 1, 2));

	// sort by salary and get ages
	$agesBySalaryDesc = array('41', '25', '27', '34');
	$this->assertEquals($agesBySalaryDesc, $this->redis->sortDesc('person:id', 'person:salary_*', 'person:age_*'));

	// sort non-alpha doesn't change all-string lists
	$list = array('def', 'abc', 'ghi');
	$this->redis->delete('list');
	foreach($list as $i) {
	    $this->redis->lPush('list', $i);
	}

	// SORT list → [ghi, abc, def]
	$this->assertEquals(array_reverse($list), $this->redis->sortDesc('list'));

	// SORT list ALPHA → [abc, def, ghi]
	$this->assertEquals(array('ghi', 'def', 'abc'), $this->redis->sortDescAlpha('list'));
    }

    // LINDEX
    public function testlGet() {

        $this->redis->delete('list');

        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
        $this->redis->lPush('list', 'val3');

	$this->assertEquals('val3', $this->redis->lGet('list', 0));
        $this->assertEquals('val2', $this->redis->lGet('list', 1));
	$this->assertEquals('val', $this->redis->lGet('list', 2));
	$this->assertEquals('val', $this->redis->lGet('list', -1));
	$this->assertEquals('val2', $this->redis->lGet('list', -2));
	$this->assertEquals('val3', $this->redis->lGet('list', -3));
	$this->assertEquals(FALSE, $this->redis->lGet('list', -4));

        $this->redis->rPush('list', 'val4');
	$this->assertEquals('val4', $this->redis->lGet('list', 3));
	$this->assertEquals('val4', $this->redis->lGet('list', -1));
    }

    // lRem testing
    public function testlRemove() {
    	$this->redis->delete('list');
        $this->redis->lPush('list', 'a');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
	// ['c', 'b', 'c', 'c', 'b', 'a']
	$return = $this->redis->lRemove('list', 'b', 2);
	// ['c', 'c', 'c', 'a']
	$this->assertEquals(2, $return);
	$this->assertEquals('c', $this->redis->lGET('list', 0));
	$this->assertEquals('c', $this->redis->lGET('list', 1));
	$this->assertEquals('c', $this->redis->lGET('list', 2));
	$this->assertEquals('a', $this->redis->lGET('list', 3));

    	$this->redis->delete('list');
        $this->redis->lPush('list', 'a');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'c');
        $this->redis->lPush('list', 'b');
        $this->redis->lPush('list', 'c');
	// ['c', 'b', 'c', 'c', 'b', 'a']
	$this->redis->lRemove('list', 'c', -2);
	// ['c', 'b', 'b', 'a']
	$this->assertEquals(2, $return);
	$this->assertEquals('c', $this->redis->lGET('list', 0));
	$this->assertEquals('b', $this->redis->lGET('list', 1));
	$this->assertEquals('b', $this->redis->lGET('list', 2));
	$this->assertEquals('a', $this->redis->lGET('list', 3));

	// remove each element
	$this->assertEquals(1, $this->redis->lRemove('list', 'a', 0));
	$this->assertEquals(0, $this->redis->lRemove('list', 'x', 0));
	$this->assertEquals(2, $this->redis->lRemove('list', 'b', 0));
	$this->assertEquals(1, $this->redis->lRemove('list', 'c', 0));
	$this->assertEquals(FALSE, $this->redis->get('list'));

	$this->redis->set('list', 'actually not a list');
	$this->assertEquals(FALSE, $this->redis->lRemove('list', 'x'));

    }

    public function testsAdd()
    {
        $this->redis->delete('set');

	$this->assertEquals(TRUE, $this->redis->sAdd('set', 'val'));
	$this->assertEquals(FALSE, $this->redis->sAdd('set', 'val'));

        $this->assertTrue($this->redis->sContains('set', 'val'));
        $this->assertFalse($this->redis->sContains('set', 'val2'));

	$this->assertEquals(TRUE, $this->redis->sAdd('set', 'val2'));

        $this->assertTrue($this->redis->sContains('set', 'val2'));
    }
    public function testsSize()
    {
        $this->redis->delete('set');

	$this->assertEquals(TRUE, $this->redis->sAdd('set', 'val'));

        $this->assertEquals(1, $this->redis->sSize('set'));

	$this->assertEquals(TRUE, $this->redis->sAdd('set', 'val2'));

        $this->assertEquals(2, $this->redis->sSize('set'));
    }

    public function testsRemove()
    {
        $this->redis->delete('set');

        $this->redis->sAdd('set', 'val');
        $this->redis->sAdd('set', 'val2');

        $this->redis->sRemove('set', 'val');

        $this->assertEquals(1, $this->redis->sSize('set'));

        $this->redis->sRemove('set', 'val2');

        $this->assertEquals(0, $this->redis->sSize('set'));
    }

    public function testsMove()
    {
        $this->redis->delete('set0');
        $this->redis->delete('set1');

        $this->redis->sAdd('set0', 'val');
        $this->redis->sAdd('set0', 'val2');

        $this->assertTrue($this->redis->sMove('set0', 'set1', 'val'));
        $this->assertFalse($this->redis->sMove('set0', 'set1', 'val'));
        $this->assertFalse($this->redis->sMove('set0', 'set1', 'val-what'));

        $this->assertEquals(1, $this->redis->sSize('set0'));
        $this->assertEquals(1, $this->redis->sSize('set1'));

	$this->assertEquals(array('val2'), $this->redis->sGetMembers('set0'));
	$this->assertEquals(array('val'), $this->redis->sGetMembers('set1'));
    }

    public function testsPop()
    {
        $this->redis->delete('set0');
	$this->assertTrue($this->redis->sPop('set0') === FALSE);

        $this->redis->sAdd('set0', 'val');
        $this->redis->sAdd('set0', 'val2');

	$v0 = $this->redis->sPop('set0');
	$this->assertTrue(1 === $this->redis->sSize('set0'));
	$this->assertTrue($v0 === 'val' || $v0 === 'val2');
	$v1 = $this->redis->sPop('set0');
	$this->assertTrue(0 === $this->redis->sSize('set0'));
	$this->assertTrue(($v0 === 'val' && $v1 === 'val2') || ($v1 === 'val' && $v0 === 'val2'));

	$this->assertTrue($this->redis->sPop('set0') === FALSE);
    }

    public function testsRandMember() {
	$this->redis->delete('set0');
	$this->assertTrue($this->redis->sRandMember('set0') === FALSE);

	$this->redis->sAdd('set0', 'val');
	$this->redis->sAdd('set0', 'val2');

	$got = array();
	while(true) {
	    $v = $this->redis->sRandMember('set0');
	    $this->assertTrue(2 === $this->redis->sSize('set0')); // no change.
	    $this->assertTrue($v === 'val' || $v === 'val2');

	    $got[$v] = $v;
	    if(count($got) == 2) {
	        break;
	    }
	}
    }

    public function testsContains()
    {
        $this->redis->delete('set');

        $this->redis->sAdd('set', 'val');

        $this->assertTrue($this->redis->sContains('set', 'val'));
        $this->assertFalse($this->redis->sContains('set', 'val2'));
    }

    public function testsGetMembers()
    {
        $this->redis->delete('set');

        $this->redis->sAdd('set', 'val');
        $this->redis->sAdd('set', 'val2');
        $this->redis->sAdd('set', 'val3');

        $array = array('val', 'val2', 'val3');

        $this->assertEquals($array, $this->redis->sGetMembers('set'));
	$this->assertEquals($array, $this->redis->sMembers('set'));	// test alias
    }

    public function testlSet() {

      	$this->redis->delete('list');
        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
	$this->redis->lPush('list', 'val3');

	$this->assertEquals($this->redis->lGet('list', 0), 'val3');
	$this->assertEquals($this->redis->lGet('list', 1), 'val2');
	$this->assertEquals($this->redis->lGet('list', 2), 'val');

	$this->assertEquals(TRUE, $this->redis->lSet('list', 1, 'valx'));

	$this->assertEquals($this->redis->lGet('list', 0), 'val3');
	$this->assertEquals($this->redis->lGet('list', 1), 'valx');
	$this->assertEquals($this->redis->lGet('list', 2), 'val');

    }

    public function testsInter() {
        $this->redis->delete('x');	// set of odd numbers
        $this->redis->delete('y');	// set of prime numbers
        $this->redis->delete('z');	// set of squares
        $this->redis->delete('t');	// set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('t', $i);
        }

        $xy = $this->redis->sInter('x', 'y');	// odd prime numbers
	foreach($xy as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($x, $y)));
	}
	$xy = $this->redis->sInter(array('x', 'y'));	// odd prime numbers, as array.
	foreach($xy as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($x, $y)));
	}

        $yz = $this->redis->sInter('y', 'z');	// set of odd squares
        foreach($yz as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($y, $z)));
        }
	$yz = $this->redis->sInter(array('y', 'z'));	// set of odd squares, as array
        foreach($yz as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_intersect($y, $z)));
        }

        $zt = $this->redis->sInter('z', 't');	// prime squares
        $this->assertTrue($zt === array());
	$zt = $this->redis->sInter(array('z', 't'));	// prime squares, as array
        $this->assertTrue($zt === array());

        $xyz = $this->redis->sInter('x', 'y', 'z');// odd prime squares
        $this->assertTrue($xyz === array('1'));

	$xyz = $this->redis->sInter(array('x', 'y', 'z'));// odd prime squares, with an array as a parameter
        $this->assertTrue($xyz === array('1'));

        $nil = $this->redis->sInter();
        $this->assertTrue($nil === FALSE);
	$nil = $this->redis->sInter(array());
        $this->assertTrue($nil === FALSE);
    }

    public function testsInterStore() {
        $this->redis->delete('x');	// set of odd numbers
        $this->redis->delete('y');	// set of prime numbers
        $this->redis->delete('z');	// set of squares
        $this->redis->delete('t');	// set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('t', $i);
        }

        $count = $this->redis->sInterStore('k', 'x', 'y');	// odd prime numbers
	$this->assertEquals($count, $this->redis->sSize('k'));
        foreach(array_intersect($x, $y) as $i) {
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sInterStore('k', 'y', 'z');	// set of odd squares
	$this->assertEquals($count, $this->redis->sSize('k'));
        foreach(array_intersect($y, $z) as $i) {
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sInterStore('k', 'z', 't');	// squares of the form n^2 + 1
	$this->assertEquals($count, 0);
	$this->assertEquals($count, $this->redis->sSize('k'));

	$this->redis->delete('z');
	$xyz = $this->redis->sInterStore('k', 'x', 'y', 'z'); // only z missing, expect 0.
	$this->assertTrue($xyz === 0);

	$this->redis->delete('y');
	$xyz = $this->redis->sInterStore('k', 'x', 'y', 'z'); // y and z missing, expect 0.
	$this->assertTrue($xyz === 0);

	$this->redis->delete('x');
	$xyz = $this->redis->sInterStore('k', 'x', 'y', 'z'); // x y and z ALL missing, expect 0.
	$this->assertTrue($xyz === 0);

        $o = $this->redis->sInterStore('k');
	$this->assertTrue($o === FALSE);	// error, wrong parameter count
    }

    public function testsUnion() {
        $this->redis->delete('x');	// set of odd numbers
        $this->redis->delete('y');	// set of prime numbers
        $this->redis->delete('z');	// set of squares
        $this->redis->delete('t');	// set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('t', $i);
        }

        $xy = $this->redis->sUnion('x', 'y');	// x U y
        foreach($xy as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($x, $y)));
        }

        $yz = $this->redis->sUnion('y', 'z');	// y U Z
        foreach($yz as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($y, $z)));
        }

        $zt = $this->redis->sUnion('z', 't');	// z U t
        foreach($zt as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($z, $t)));
        }

        $xyz = $this->redis->sUnion('x', 'y', 'z'); // x U y U z
        foreach($xyz as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_merge($x, $y, $z)));
        }

        $nil = $this->redis->sUnion();
        $this->assertTrue($nil === FALSE);
    }

    public function testsUnionStore() {
        $this->redis->delete('x');	// set of odd numbers
        $this->redis->delete('y');	// set of prime numbers
        $this->redis->delete('z');	// set of squares
        $this->redis->delete('t');	// set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('t', $i);
        }

        $count = $this->redis->sUnionStore('k', 'x', 'y');	// x U y
	$xy = array_unique(array_merge($x, $y));
	$this->assertEquals($count, count($xy));
        foreach($xy as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sUnionStore('k', 'y', 'z');	// y U z
	$yz = array_unique(array_merge($y, $z));
	$this->assertEquals($count, count($yz));
        foreach($yz as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sUnionStore('k', 'z', 't');	// z U t
	$zt = array_unique(array_merge($z, $t));
	$this->assertEquals($count, count($zt));
        foreach($zt as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sUnionStore('k', 'x', 'y', 'z');	// x U y U z
	$xyz = array_unique(array_merge($x, $y, $z));
	$this->assertEquals($count, count($xyz));
        foreach($xyz as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

	$this->redis->delete('x');	// x missing now
        $count = $this->redis->sUnionStore('k', 'x', 'y', 'z');	// x U y U z
	$this->assertTrue($count === count(array_unique(array_merge($y, $z))));

	$this->redis->delete('y');	// x and y missing
        $count = $this->redis->sUnionStore('k', 'x', 'y', 'z');	// x U y U z
	$this->assertTrue($count === count(array_unique($z)));

	$this->redis->delete('z');	// x, y, and z ALL missing
        $count = $this->redis->sUnionStore('k', 'x', 'y', 'z');	// x U y U z
	$this->assertTrue($count === 0);

        $count = $this->redis->sUnionStore('k');	// Union on nothing...
	$this->assertTrue($count === FALSE);
    }

    public function testsDiff() {
        $this->redis->delete('x');	// set of odd numbers
        $this->redis->delete('y');	// set of prime numbers
        $this->redis->delete('z');	// set of squares
        $this->redis->delete('t');	// set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('t', $i);
        }

        $xy = $this->redis->sDiff('x', 'y');	// x U y
        foreach($xy as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($x, $y)));
        }

        $yz = $this->redis->sDiff('y', 'z');	// y U Z
        foreach($yz as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($y, $z)));
        }

        $zt = $this->redis->sDiff('z', 't');	// z U t
        foreach($zt as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($z, $t)));
        }

        $xyz = $this->redis->sDiff('x', 'y', 'z'); // x U y U z
        foreach($xyz as $i) {
	    $i = (int)$i;
            $this->assertTrue(in_array($i, array_diff($x, $y, $z)));
        }

        $nil = $this->redis->sDiff();
        $this->assertTrue($nil === FALSE);
    }

    public function testsDiffStore() {
        $this->redis->delete('x');	// set of odd numbers
        $this->redis->delete('y');	// set of prime numbers
        $this->redis->delete('z');	// set of squares
        $this->redis->delete('t');	// set of numbers of the form n^2 - 1

        $x = array(1,3,5,7,9,11,13,15,17,19,21,23,25);
        foreach($x as $i) {
            $this->redis->sAdd('x', $i);
        }

        $y = array(1,2,3,5,7,11,13,17,19,23);
        foreach($y as $i) {
            $this->redis->sAdd('y', $i);
        }

        $z = array(1,4,9,16,25);
        foreach($z as $i) {
            $this->redis->sAdd('z', $i);
        }

        $t = array(2,5,10,17,26);
        foreach($t as $i) {
            $this->redis->sAdd('t', $i);
        }

        $count = $this->redis->sDiffStore('k', 'x', 'y');	// x - y
	$xy = array_unique(array_diff($x, $y));
	$this->assertEquals($count, count($xy));
        foreach($xy as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sDiffStore('k', 'y', 'z');	// y - z
	$yz = array_unique(array_diff($y, $z));
	$this->assertEquals($count, count($yz));
        foreach($yz as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sDiffStore('k', 'z', 't');	// z - t
	$zt = array_unique(array_diff($z, $t));
	$this->assertEquals($count, count($zt));
        foreach($zt as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

        $count = $this->redis->sDiffStore('k', 'x', 'y', 'z');	// x - y - z
	$xyz = array_unique(array_diff($x, $y, $z));
	$this->assertEquals($count, count($xyz));
        foreach($xyz as $i) {
	    $i = (int)$i;
            $this->assertTrue($this->redis->sContains('k', $i));
        }

	$this->redis->delete('x');	// x missing now
        $count = $this->redis->sDiffStore('k', 'x', 'y', 'z');	// x - y - z
	$this->assertTrue($count === 0);

	$this->redis->delete('y');	// x and y missing
        $count = $this->redis->sDiffStore('k', 'x', 'y', 'z');	// x - y - z
	$this->assertTrue($count === 0);

	$this->redis->delete('z');	// x, y, and z ALL missing
        $count = $this->redis->sDiffStore('k', 'x', 'y', 'z');	// x - y - z
	$this->assertTrue($count === 0);

        $count = $this->redis->sDiffStore('k');	// diff on nothing...
	$this->assertTrue($count === FALSE);
    }

    public function testlGetRange() {

      	$this->redis->delete('list');
        $this->redis->lPush('list', 'val');
        $this->redis->lPush('list', 'val2');
	$this->redis->lPush('list', 'val3');

	// pos :   0     1     2
	// pos :  -3    -2    -1
	// list: [val3, val2, val]

	$this->assertEquals($this->redis->lGetRange('list', 0, 0), array('val3'));
	$this->assertEquals($this->redis->lGetRange('list', 0, 1), array('val3', 'val2'));
	$this->assertEquals($this->redis->lGetRange('list', 0, 2), array('val3', 'val2', 'val'));
	$this->assertEquals($this->redis->lGetRange('list', 0, 3), array('val3', 'val2', 'val'));

	$this->assertEquals($this->redis->lGetRange('list', 0, -1), array('val3', 'val2', 'val'));
	$this->assertEquals($this->redis->lGetRange('list', 0, -2), array('val3', 'val2'));
	$this->assertEquals($this->redis->lGetRange('list', -2, -1), array('val2', 'val'));

	$this->redis->delete('list');
	$this->assertEquals($this->redis->lGetRange('list', 0, -1), array());
    }


//    public function testsave() {
//	$this->assertTrue($this->redis->save() === TRUE);	// don't really know how else to test this...
//    }
//    public function testbgSave() {
//	// let's try to fill the DB and then bgSave twice. We expect the second one to fail.
//	for($i = 0; $i < 10e+4; $i++) {
//	    $s = md5($i);
//	    $this->redis->set($s, $s);
//	}
//	$this->assertTrue($this->redis->bgSave() === TRUE);	// the first one should work.
//	$this->assertTrue($this->redis->bgSave() === FALSE);	// the second one should fail (still working on the first one)
//    }
//
//    public function testlastSave() {
//	while(!$this->redis->save()) {
//	    sleep(1);
//	}
//	$t_php = microtime(TRUE);
//	$t_redis = $this->redis->lastSave();
//
//	$this->assertTrue($t_php - $t_redis < 10000); // check that it's approximately what we've measured in PHP.
//    }
//
//    public function testflushDb() {
//	$this->redis->set('x', 'y');
//	$this->assertTrue($this->redis->flushDb());
//	$this->assertTrue($this->redis->getKeys('*') === array());
//    }
//
//    public function testflushAll() {
//	$this->redis->set('x', 'y');
//	$this->asse…