diff --git a/spec/fixtures/errors/duplicate_idempotence_key.json b/spec/fixtures/errors/duplicate_idempotence_key.json
new file mode 100644
index 0000000..76c61a7
--- /dev/null
+++ b/spec/fixtures/errors/duplicate_idempotence_key.json
@@ -0,0 +1,7 @@
+{
+  "type": "error",
+  "id": "afd4a246-ba97-4412-aa19-f5def9322f8b",
+  "code": "invalid_request",
+  "description": "Idempotence key duplicated",
+  "parameter": "Idempotence-Key"
+}
diff --git a/spec/fixtures/errors/invalid_request.json b/spec/fixtures/errors/invalid_request.json
new file mode 100644
index 0000000..248bef3
--- /dev/null
+++ b/spec/fixtures/errors/invalid_request.json
@@ -0,0 +1,7 @@
+{
+  "type": "error",
+  "id": "85e254dd-e1e5-40c9-82c0-9f59f4130828",
+  "code": "invalid_request",
+  "description": "Payment not found or forbidden",
+  "parameter": "payment_id"
+}
diff --git a/spec/yandex-checkout/payment_spec.rb b/spec/yandex-checkout/payment_spec.rb
index acc6329..770e10f 100644
--- a/spec/yandex-checkout/payment_spec.rb
+++ b/spec/yandex-checkout/payment_spec.rb
@@ -1,10 +1,43 @@
 # frozen_string_literal: true
 
 RSpec.describe YandexCheckout::Payment do
+  let(:settings) { { shop_id: 'SHOP_ID', api_key: 'API_KEY' } }
+  let(:idempotency_key) { 12_345 }
+  let(:payment) { described_class.new(settings) }
+
+  shared_examples 'returns_payment_object' do
+    it 'returns success' do
+      expect(subject).to be_kind_of YandexCheckout::Response
+      expect(subject.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
+      expect(subject.test).to eq true
+      expect(subject.paid).to eq false
+      expect(subject.status).to eq 'pending'
+      expect(subject.captured_at).to eq nil
+      expect(subject.created_at).to eq '2019-06-10T21:26:41.395Z'
+      expect(subject.description).to eq nil
+      expect(subject.expires_at).to eq nil
+      expect(subject.metadata).to eq Hash[]
+
+      expect(subject.amount).to be_kind_of YandexCheckout::Entity::Amount
+      expect(subject.amount.currency).to eq 'RUB'
+      expect(subject.amount.value).to eq 10.0
+
+      expect(subject.confirmation).to be_kind_of YandexCheckout::Entity::Confirmation
+      expect(subject.confirmation.confirmation_url).to eq 'https://money.yandex.ru/payments/external/confirmation?orderId=2490ded1-000f-5000-8000-1f64111bc63e'
+      expect(subject.confirmation.type).to eq 'redirect'
+      expect(subject.confirmation.return_url).to eq 'https://url.test'
+      expect(subject.confirmation.enforce).to eq nil
+
+      expect(subject.payment_method).to be_kind_of YandexCheckout::Entity::PaymentMethod
+      expect(subject.payment_method.card).to eq nil
+      expect(subject.payment_method.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
+      expect(subject.payment_method.saved).to eq false
+      expect(subject.payment_method.type).to eq 'bank_card'
+      expect(subject.payment_method.title).to eq nil
+    end
+  end
+
   describe '#create' do
-    let(:settings) { { shop_id: 'SHOP_ID', api_key: 'API_KEY' } }
-    let(:idempotency_key) { 12_345 }
-    let(:payment) { described_class.new(settings) }
     let(:params) { { payment: File.read('spec/fixtures/payment.json') } }
     let(:url) { 'https://payment.yandex.net/api/v3/payments' }
     let(:body) { File.read('spec/fixtures/payment_response.json') }
@@ -17,41 +50,11 @@ RSpec.describe YandexCheckout::Payment do
       expect(a_request(:post, url)).to have_been_made
     end
 
-    it 'returns success' do
-      expect(subject).to be_kind_of YandexCheckout::Response
-      expect(subject.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.test).to eq true
-      expect(subject.paid).to eq false
-      expect(subject.status).to eq 'pending'
-      expect(subject.captured_at).to eq nil
-      expect(subject.created_at).to eq '2019-06-10T21:26:41.395Z'
-      expect(subject.description).to eq nil
-      expect(subject.expires_at).to eq nil
-      expect(subject.metadata).to eq Hash[]
-
-      expect(subject.amount).to be_kind_of YandexCheckout::Entity::Amount
-      expect(subject.amount.currency).to eq 'RUB'
-      expect(subject.amount.value).to eq 10.0
-
-      expect(subject.confirmation).to be_kind_of YandexCheckout::Entity::Confirmation
-      expect(subject.confirmation.confirmation_url).to eq 'https://money.yandex.ru/payments/external/confirmation?orderId=2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.confirmation.type).to eq 'redirect'
-      expect(subject.confirmation.return_url).to eq 'https://url.test'
-      expect(subject.confirmation.enforce).to eq nil
-
-      expect(subject.payment_method).to be_kind_of YandexCheckout::Entity::PaymentMethod
-      expect(subject.payment_method.card).to eq nil
-      expect(subject.payment_method.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.payment_method.saved).to eq false
-      expect(subject.payment_method.type).to eq 'bank_card'
-      expect(subject.payment_method.title).to eq nil
-    end
+    it_behaves_like 'returns_payment_object'
   end
 
   describe '#get_payment_info' do
-    let(:settings) { { shop_id: 'SHOP_ID', api_key: 'API_KEY' } }
     let(:payment_id) { '2490ded1-000f-5000-8000-1f64111bc63e' }
-    let(:payment) { described_class.new(settings) }
     let(:url) { "https://payment.yandex.net/api/v3/payments/#{payment_id}" }
     let(:body) { File.read('spec/fixtures/payment_response.json') }
 
@@ -63,130 +66,39 @@ RSpec.describe YandexCheckout::Payment do
       expect(a_request(:get, url)).to have_been_made
     end
 
-    it 'returns success' do
-      expect(subject).to be_kind_of YandexCheckout::Response
-      expect(subject.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.test).to eq true
-      expect(subject.paid).to eq false
-      expect(subject.status).to eq 'pending'
-      expect(subject.captured_at).to eq nil
-      expect(subject.created_at).to eq '2019-06-10T21:26:41.395Z'
-      expect(subject.description).to eq nil
-      expect(subject.expires_at).to eq nil
-      expect(subject.metadata).to eq Hash[]
-
-      expect(subject.amount).to be_kind_of YandexCheckout::Entity::Amount
-      expect(subject.amount.currency).to eq 'RUB'
-      expect(subject.amount.value).to eq 10.0
-
-      expect(subject.confirmation).to be_kind_of YandexCheckout::Entity::Confirmation
-      expect(subject.confirmation.confirmation_url).to eq 'https://money.yandex.ru/payments/external/confirmation?orderId=2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.confirmation.type).to eq 'redirect'
-      expect(subject.confirmation.return_url).to eq 'https://url.test'
-      expect(subject.confirmation.enforce).to eq nil
-
-      expect(subject.payment_method).to be_kind_of YandexCheckout::Entity::PaymentMethod
-      expect(subject.payment_method.card).to eq nil
-      expect(subject.payment_method.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.payment_method.saved).to eq false
-      expect(subject.payment_method.type).to eq 'bank_card'
-      expect(subject.payment_method.title).to eq nil
-    end
+    it_behaves_like 'returns_payment_object'
   end
 
   describe '#capture' do
-    let(:settings) { { shop_id: 'SHOP_ID', api_key: 'API_KEY' } }
-    let(:idempotence_key) { 12_345 }
-    let(:payment) { described_class.new(settings) }
     let(:payment_id) { '2490ded1-000f-5000-8000-1f64111bc63e' }
     let(:params) { { payment: File.read('spec/fixtures/payment.json') } }
     let(:url) { "https://payment.yandex.net/api/v3/payments/#{payment_id}/capture" }
     let(:body) { File.read('spec/fixtures/payment_response.json') }
 
     before  { stub_request(:any, //).to_return(body: body) }
-    subject { payment.capture(payment_id: payment_id, idempotency_key: idempotence_key) }
+    subject { payment.capture(payment_id: payment_id, idempotency_key: idempotency_key) }
 
     it 'sends a request' do
       subject
       expect(a_request(:post, url)).to have_been_made
     end
 
-    it 'returns success' do
-      expect(subject).to be_kind_of YandexCheckout::Response
-      expect(subject.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.test).to eq true
-      expect(subject.paid).to eq false
-      expect(subject.status).to eq 'pending'
-      expect(subject.captured_at).to eq nil
-      expect(subject.created_at).to eq '2019-06-10T21:26:41.395Z'
-      expect(subject.description).to eq nil
-      expect(subject.expires_at).to eq nil
-      expect(subject.metadata).to eq Hash[]
-
-      expect(subject.amount).to be_kind_of YandexCheckout::Entity::Amount
-      expect(subject.amount.currency).to eq 'RUB'
-      expect(subject.amount.value).to eq 10.0
-
-      expect(subject.confirmation).to be_kind_of YandexCheckout::Entity::Confirmation
-      expect(subject.confirmation.confirmation_url).to eq 'https://money.yandex.ru/payments/external/confirmation?orderId=2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.confirmation.type).to eq 'redirect'
-      expect(subject.confirmation.return_url).to eq 'https://url.test'
-      expect(subject.confirmation.enforce).to eq nil
-
-      expect(subject.payment_method).to be_kind_of YandexCheckout::Entity::PaymentMethod
-      expect(subject.payment_method.card).to eq nil
-      expect(subject.payment_method.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.payment_method.saved).to eq false
-      expect(subject.payment_method.type).to eq 'bank_card'
-      expect(subject.payment_method.title).to eq nil
-    end
+    it_behaves_like 'returns_payment_object'
   end
 
   describe '#cancel' do
-    let(:settings) { { shop_id: 'SHOP_ID', api_key: 'API_KEY' } }
-    let(:idempotence_key) { 12_345 }
     let(:payment_id) { '2490ded1-000f-5000-8000-1f64111bc63e' }
-    let(:payment) { described_class.new(settings) }
-    # let(:params) { { payment: File.read('spec/fixtures/payment.json') } }
     let(:url) { "https://payment.yandex.net/api/v3/payments/#{payment_id}/cancel" }
     let(:body) { File.read('spec/fixtures/payment_response.json') }
 
     before  { stub_request(:any, //).to_return(body: body) }
-    subject { payment.cancel(payment_id: payment_id, idempotency_key: idempotence_key) }
+    subject { payment.cancel(payment_id: payment_id, idempotency_key: idempotency_key) }
 
     it 'sends a request' do
       subject
       expect(a_request(:post, url)).to have_been_made
     end
 
-    it 'returns success' do
-      expect(subject).to be_kind_of YandexCheckout::Response
-      expect(subject.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.test).to eq true
-      expect(subject.paid).to eq false
-      expect(subject.status).to eq 'pending'
-      expect(subject.captured_at).to eq nil
-      expect(subject.created_at).to eq '2019-06-10T21:26:41.395Z'
-      expect(subject.description).to eq nil
-      expect(subject.expires_at).to eq nil
-      expect(subject.metadata).to eq Hash[]
-
-      expect(subject.amount).to be_kind_of YandexCheckout::Entity::Amount
-      expect(subject.amount.currency).to eq 'RUB'
-      expect(subject.amount.value).to eq 10.0
-
-      expect(subject.confirmation).to be_kind_of YandexCheckout::Entity::Confirmation
-      expect(subject.confirmation.confirmation_url).to eq 'https://money.yandex.ru/payments/external/confirmation?orderId=2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.confirmation.type).to eq 'redirect'
-      expect(subject.confirmation.return_url).to eq 'https://url.test'
-      expect(subject.confirmation.enforce).to eq nil
-
-      expect(subject.payment_method).to be_kind_of YandexCheckout::Entity::PaymentMethod
-      expect(subject.payment_method.card).to eq nil
-      expect(subject.payment_method.id).to eq '2490ded1-000f-5000-8000-1f64111bc63e'
-      expect(subject.payment_method.saved).to eq false
-      expect(subject.payment_method.type).to eq 'bank_card'
-      expect(subject.payment_method.title).to eq nil
-    end
+    it_behaves_like 'returns_payment_object'
   end
 end