what is the difference of Unit test and Feature Test

A unit test should just test one method like checking that a sum method returns the sum of two numbers while a feature test can test the functionality of a chain of methods.

Unit test example

    /**
    * @test
    */
    public function name_property_returns_the_authors_last_name_and_first_name()
    {
        $author = factory(Author::class)->create([
            'first_name' => 'Robert',
            'last_name' => 'Jordan'
        ]);

        $this->assertEquals('Jordan, Robert', $author->name);
    }

Feature test example

    /**
    * @test
    */
    public function when_users_update_a_book_they_are_redirected_to_the_book_index_and_are_shown_a_success_message()
    {
        $this->createForeignKeys();
        $this->signIn();
        $book = factory(Book::class)->create();
        $book->title = 'Kalle';

        $response = $this->patch('/books/' . $book->id, $book->toArray());

        $response->assertStatus(302);
        $response->assertLocation('/books');

        $response = $this->get('/books');
        $response->assertSee(e($book->title) . ' successfully updated.');
    }

Thank you :)

@tray2 ,

Is this built in method in laravel ?

$this->createForeignKeys(); $this->signIn();

also where I could find in the documentation the command for testing like assertsee ?

I think those two methods are made by @tray2 .

It uses phpunit to test. All base assertions are found here

https://phpunit.de/manual/6.5/en/appendixes.assertions.html

Laravel adds more on top that can be found in the documentation for laravel https://laravel.com/docs/6.x/http-tests#available-assertions

Thank you @sinnbeck

Yes those are not part of standard Laravel.

The $this->createForeignKeys(); is a method that creates all the necessary foreign keys for that and other tests. I didn't want to use the regular setUp()method since I don't want them in all my tests in that test class.

The this->signIn() method creates a user and signs that user in. Jeffrey uses that one in a couple of his series on TDD.

assertSee is a Laravel specific assertion just like @sinnbeck stated.