public function testDivide() { $divideWith = P::flip('P::divide', 2); $perCent = $divideWith(100); $reciprocal = P::divide(1); $this->assertEquals(9000, P::divide(900000, 100)); $this->assertEquals(9000, $perCent(900000)); $this->assertEquals(1 / 10, $reciprocal(10)); }