php-kitchen / platform

    /**

     * @test

     */

    public function calculateProductBehavior() {

        $I = $this->tester;

        $I->describe('`calculateProduct` behavior');

        $collection = Collection::of([2, 4, 3]);

        $I->expectThat('numeric collection product can be calculated');

        $collectionProduct = $collection->calculateProduct();

        $I->seeNumber($collectionProduct)

          ->isEqualTo(24);

        $collection = Collection::of([2, 'hi', 'there']);

        $I->expectThat('mixed collection product can be calculated');

        $collectionProduct = $collection->calculateProduct();

        $I->seeNumber($collectionProduct)

          ->isEqualTo(0);

    }

    /**

     * @test

    /**

     * @test

     */

    public function popBehavior() {

        $I = $this->tester;

        $I->describe('`pop` behavior');

        $collection = Collection::of([2, 4, 3]);

        $I->expectThat('`pop` ejects last element fro the collection');

        $poppedElement = $collection->pop();

        $I->lookAt('popped element');

        $I->seeNumber($poppedElement)

          ->isEqualTo($lastCollectionElement = 3);

        $I->lookAt('collection without last(popped) element');

        $I->see($collection)

          ->isEqualTo(Collection::of([2, 4]));

    }

    /**

     * @test

    /**

     * @test

     */

    public function shiftBehavior() {

        $I = $this->tester;

        $I->describe('`shift` behavior');

        $collection = Collection::of([2, 4, 3]);

        $I->expectThat('`shift` ejects first element fro the collection');

        $poppedElement = $collection->shift();

        $I->lookAt('shifted element');

        $I->seeNumber($poppedElement)

          ->isEqualTo($firstCollectionElement = 2);

        $I->lookAt('collection without first(shifted) element');

        $I->see($collection)

          ->isEqualTo(Collection::of([4, 3]));

    }

    /**

     * @test