public function testGenerateRandStr() { $rand_array = array(); for ($i = 0; $i < 10000; $i++) { $rand_array[] = OAuth2Util::generateRandStr(); $this->assertNotNull($rand_array[$i]); $this->assertEquals(strlen($rand_array[$i]), 32); } $this->assertEquals($rand_array, array_unique($rand_array)); }