Laravel 7x Testing. How to feature test with image posts

Show what you have that does not work

public function test_if_posts_are_created() {

    // First The user is created
    $user = factory(User::class)->make();

    Storage::fake('image');

    //act as user
    $this->actingAs($user)
        // Then we want to make sure a profile page is created
        ->post(route('post.store'), [
            'caption' => 'description of the post',
            'image' => UploadedFile::fake()->image('postimage.jpg')
        ]);

    $imagePath = request('image')->store('uploads', 'public');

    $image = Image::make(public_path("storage/{$imagePath}"))->fit(1200, 1200);

    Storage::assertExists("storage/{$imagePath}" .
        $image);

    $this->assertDatabaseCount('posts', 1);
}

public function store()

{
    $data = request()->validate([
        'caption' => 'required',
        'image' => ['required', 'image|mimes:jpeg,png,jpg,gif,svg,heic|max:2048']
    ]);

    $imagePath = request('image')->store('uploads', 'public');

    $image = Image::make
    (public_path("storage/{$imagePath}"))
        ->fit(1200, 1200);
    $image->save();

    auth()->user()->posts()->create([
        'caption' => $data['caption'],
        'image' => $imagePath,
    ]);

    return redirect('/profiles/' . auth()->user()->id);
}