Important: Test "Happy" and "Sad" Paths

The final part of this "philosophical" course section on "what to test" is about the happy/unhappy paths. The example is from our tests.

test('admin can see products create button', function () {
    $admin = User::factory()->create(['is_admin' => true]);
 
    actingAs($admin)
        ->get('/products')
        ->assertStatus(200)
        ->assertSee('Add new product');
});
 
test('non admin cannot see products create button', function () {
    actingAs($this->user)
        ->get('/products')
        ->assertStatus(200)
        ->assertDontSee('Add new product');
});

For example, we covered the create button for products in previous lessons.

I added two tests for the opposite cases:

• The "happy path": if I'm an admin, I can see the button
• The "non-happy path": if I'm not an admin, I cannot see the products create button.

And this is important.

Quite often...