Add component spec for ImageInput

spec/components/image_input_spec.rb

@@ -4,7 +4,27 @@
 
 RSpec.describe ImageInput::ImageInput, type: :component do
   subject { render_inline(described_class.new(**params)) }
+  let(:params) { { id: :logo } }
 
-  let(:params) { {} }
   it { should have_css('.ImageInput') }
+  it { should have_css('input[type="file"][id="logo"][name="logo"][hidden]', visible: :all) }
+
+  context 'without existing upload' do
+    it { should have_text('Noch kein Bild hochgeladen') }
+    it { should have_css('svg.Icon') }
+    it { should have_button('Bild hochladen') }
+    it { should_not have_css('.ImageInput-selectedImage') }
+  end
+
+  context 'with existing upload' do
+    let(:file) { fixture_file_upload('example-image.png') }
+    let(:blob) { ActiveStorage::Blob.create_and_upload!(io: file, filename: file.original_filename) }
+
+    let(:params) { { id: :logo, value: blob } }
+
+    it { should have_text('example-image.png') }
+    it { should have_css('img[src$="/example-image.png"]') }
+    it { should have_button('Bild ersetzen') }
+    it { should_not have_css('.ImageInput-emptyState') }
+  end
 end