assertNotNull($r->generateEntropy()); $this->assertNotEquals($r->generateEntropy(), $r->generateEntropy()); } function testGenerateHash() { $r = new RandomGenerator(); $this->assertNotNull($r->generateHash()); $this->assertNotEquals($r->generateHash(), $r->generateHash()); } function testGenerateHashWithAlgorithm() { $r = new RandomGenerator(); $this->assertNotNull($r->generateHash('md5')); $this->assertNotEquals($r->generateHash(), $r->generateHash('md5')); } }