Implement API sounds/create

spec/integration/api/sounds_spec.rb

@@ -1,4 +1,6 @@
 describe 'API sounds' do
+  subject { response }
+
   before { api_sign_in }
 
   describe 'sound show' do
@@ -6,7 +8,6 @@ describe 'API sounds' do
     let(:request_method)  { :get }
     let(:request_path)    { api_sound_path(sound) }
     let(:request_show)    { send request_method, request_path }
-    subject               { response }
 
     before { request_show }
 
@@ -36,4 +37,41 @@ describe 'API sounds' do
       it { is_expected.to have_http_status 200 }
     end
   end
+
+  describe 'sounds create' do
+    let(:file)    { attributes_for(:sound)[:file] }
+    let(:upload)  { fixture_file_upload file.path, file.content_type }
+    let(:sound)   { { file: upload } }
+
+    before { post api_sounds_path, sound: sound }
+
+    it { is_expected.to have_http_status 201 }
+
+    it 'creates the sound' do
+      get response.location
+      expect(response.body).to eq File.read(file.path, mode: 'rb')
+    end
+
+    it 'returns the sound' do
+      expect(json).to match(
+        sound: {
+          id:         an_instance_of(Fixnum),
+          sha256:     /\A\h+\z/,
+          mime_type: 'audio/mpeg'
+        }
+      )
+    end
+
+    context 'when sound is invalid' do
+      let(:sound) { { file: nil } }
+
+      it { is_expected.to have_http_status 422 }
+
+      it 'returns errors' do
+        expect(json :any).to include(
+          sha256: [an_instance_of(String)]
+        )
+      end
+    end
+  end
 end