Simple test: It passes when it should actually fail

This is my first attempt at writing tests and I'm super confused about what's going on. Here's my first test -

/** @test */
    public function an_authenticated_user_can_view_add_a_question_form() {
        $this->withExceptionHandling();
        $this->signIn();
        $this->get('questions/add')
            ->assertSee('Add New Question');
    }

I haven't yet defined the route and yet, phpUnit returns green. I'm expecting an error that says round doesn't exist.

PS: Commenting $this->withExceptionHandling(); doesn't change anything.