diff --git a/spec/controllers/api/v1/apps_controller_spec.rb b/spec/requests/api/v1/apps_spec.rb
similarity index 69%
rename from spec/controllers/api/v1/apps_controller_spec.rb
rename to spec/requests/api/v1/apps_spec.rb
index de2a07f20..88f9eee36 100644
--- a/spec/controllers/api/v1/apps_controller_spec.rb
+++ b/spec/requests/api/v1/apps_spec.rb
@@ -2,16 +2,18 @@
 
 require 'rails_helper'
 
-RSpec.describe Api::V1::AppsController do
-  render_views
+RSpec.describe 'Apps' do
+  describe 'POST /api/v1/apps' do
+    subject do
+      post '/api/v1/apps', params: params
+    end
 
-  describe 'POST #create' do
-    let(:client_name) { 'Test app' }
-    let(:scopes) { nil }
+    let(:client_name)   { 'Test app' }
+    let(:scopes)        { nil }
     let(:redirect_uris) { 'urn:ietf:wg:oauth:2.0:oob' }
-    let(:website) { nil }
+    let(:website)       { nil }
 
-    let(:app_params) do
+    let(:params) do
       {
         client_name: client_name,
         redirect_uris: redirect_uris,
@@ -20,24 +22,26 @@ RSpec.describe Api::V1::AppsController do
       }
     end
 
-    before do
-      post :create, params: app_params
-    end
-
     context 'with valid params' do
       it 'returns http success' do
+        subject
+
         expect(response).to have_http_status(200)
       end
 
       it 'creates an OAuth app' do
-        expect(Doorkeeper::Application.find_by(name: client_name)).to_not be_nil
+        subject
+
+        expect(Doorkeeper::Application.find_by(name: client_name)).to be_present
       end
 
       it 'returns client ID and client secret' do
-        json = body_as_json
+        subject
 
-        expect(json[:client_id]).to_not be_blank
-        expect(json[:client_secret]).to_not be_blank
+        body = body_as_json
+
+        expect(body[:client_id]).to be_present
+        expect(body[:client_secret]).to be_present
       end
     end
 
@@ -45,6 +49,8 @@ RSpec.describe Api::V1::AppsController do
       let(:scopes) { 'hoge' }
 
       it 'returns http unprocessable entity' do
+        subject
+
         expect(response).to have_http_status(422)
       end
     end
@@ -53,10 +59,14 @@ RSpec.describe Api::V1::AppsController do
       let(:scopes) { (%w(read) * 40).join(' ') }
 
       it 'returns http success' do
+        subject
+
         expect(response).to have_http_status(200)
       end
 
       it 'only saves the scope once' do
+        subject
+
         expect(Doorkeeper::Application.find_by(name: client_name).scopes.to_s).to eq 'read'
       end
     end
@@ -65,6 +75,8 @@ RSpec.describe Api::V1::AppsController do
       let(:client_name) { 'hoge' * 20 }
 
       it 'returns http unprocessable entity' do
+        subject
+
         expect(response).to have_http_status(422)
       end
     end
@@ -73,6 +85,8 @@ RSpec.describe Api::V1::AppsController do
       let(:website) { "https://foo.bar/#{'hoge' * 2_000}" }
 
       it 'returns http unprocessable entity' do
+        subject
+
         expect(response).to have_http_status(422)
       end
     end
@@ -81,6 +95,19 @@ RSpec.describe Api::V1::AppsController do
       let(:redirect_uris) { "https://foo.bar/#{'hoge' * 2_000}" }
 
       it 'returns http unprocessable entity' do
+        subject
+
+        expect(response).to have_http_status(422)
+      end
+    end
+
+    context 'without required params' do
+      let(:client_name)   { '' }
+      let(:redirect_uris) { '' }
+
+      it 'returns http unprocessable entity' do
+        subject
+
         expect(response).to have_http_status(422)
       end
     end