public function testCountSubordinates() { $empInfo = new EmpInfo(); $result[] = $empInfo->countSubordinates('001'); $result[] = $empInfo->countSubordinates('002'); $result[] = $empInfo->countSubordinates('003'); $this->assertEquals(0, $result[0]); $this->assertEquals(1, $result[1]); $this->assertEquals(3, $result[2]); }