public function testPriceCode()
 {
     $sw = new Movie('Star Wars', Movie::REGULAR);
     $this->assertEquals(Movie::REGULAR, $sw->getPriceCode());
     $toystory = new Movie('Toy Story', Movie::CHILDREN);
     $this->assertEquals(Movie::CHILDREN, $toystory->getPriceCode());
     $skyfall = new Movie('Skyfall', Movie::NEW_RELEASE);
     $this->assertEquals(Movie::NEW_RELEASE, $skyfall->getPriceCode());
 }
         $sw = new Movie('Star Wars', Movie::REGULAR);
         expect($sw->getTitle())->toBe('Star Wars');
     });
 });
 describe("->getPriceCode()", function () {
     it("returns the `Movie::REGULAR` price for regular movies", function () {
         $sw = new Movie('Star Wars', Movie::REGULAR);
         expect($sw->getPriceCode())->toBe(Movie::REGULAR);
     });
     it("returns the `Movie::CHILDREN` price for children's movies", function () {
         $toystory = new Movie('Toy Story', Movie::CHILDREN);
         expect($toystory->getPriceCode())->toBe(Movie::CHILDREN);
     });
     it("returns the `Movie::NEW_RELEASE` price for newly released movies", function () {
         $skyfall = new Movie('Skyfall', Movie::NEW_RELEASE);
         expect($skyfall->getPriceCode())->toBe(Movie::NEW_RELEASE);
     });
     it("throws an `InvalidArgumentException` when using an invalid price code", function () {
         $closure = function () {
             $killbill = new Movie('Kill Bill', 999);
         };
         expect($closure)->toThrow(new InvalidArgumentException("Incorrect Price Code"));
     });
 });
 describe("->getCharge()", function () {
     it("gets regular movie charge", function () {
         $sw = new Movie('Star Wars', Movie::REGULAR);
         expect($sw->getCharge(1))->toBe(2);
         expect($sw->getCharge(3))->toBe(3.5);
     });
     it("gets children movie charge", function () {