function testPayments() { $x = new Consultation(1); $y = $x->payments(); $this->assertType('array', $y); $this->assertEquals(1, count($y)); $z = array_shift($y); $this->assertType('Payment', $z); $this->assertEquals(5, $z->id); $x = new Consultation(2); $y = $x->payments(); $this->assertEquals(0, count($y)); }