diff --git a/test/integration/reservations/create_as_admin_test.rb b/test/integration/reservations/create_as_admin_test.rb
index c70713a3e..96871896d 100644
--- a/test/integration/reservations/create_as_admin_test.rb
+++ b/test/integration/reservations/create_as_admin_test.rb
@@ -38,6 +38,7 @@ module Reservations
       assert_equal users_credit_count, UsersCredit.count
 
       # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
       assert_nil @user_without_subscription.subscribed_plan
 
       # reservation assertions
@@ -80,6 +81,7 @@ module Reservations
       assert_equal users_credit_count, UsersCredit.count
 
       # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
       assert_nil @user_without_subscription.subscribed_plan
 
       # reservation assertions
@@ -137,6 +139,7 @@ module Reservations
       assert_equal invoice_items_count + 1, InvoiceItem.count
 
       # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
       assert_nil @user_without_subscription.subscribed_plan
 
       # reservation assertions
@@ -201,6 +204,7 @@ module Reservations
       assert_equal users_credit_count + 1, UsersCredit.count
 
       # subscription assertions
+      assert_equal 1, @user_with_subscription.subscriptions.count
       assert_not_nil @user_with_subscription.subscribed_plan
       assert_equal plan.id, @user_with_subscription.subscribed_plan.id
 
@@ -270,6 +274,7 @@ module Reservations
       assert_equal users_credit_count, UsersCredit.count
 
       # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
       assert_nil @user_without_subscription.subscribed_plan
 
       # reservation assertions
@@ -343,6 +348,7 @@ module Reservations
       assert_equal wallet_transactions_count + 1, WalletTransaction.count
 
       # subscription assertions
+      assert_equal 1, @vlonchamp.subscriptions.count
       assert_not_nil @vlonchamp.subscribed_plan
       assert_equal plan.id, @vlonchamp.subscribed_plan.id
 
@@ -409,7 +415,8 @@ module Reservations
       assert_equal users_credit_count, UsersCredit.count
 
       # subscription assertions
-      assert_nil @user_without_subscription.subscribed_plan
+      assert_equal 0, @vlonchamp.subscriptions.count
+      assert_nil @vlonchamp.subscribed_plan
 
       # reservation assertions
       reservation = Reservation.last
@@ -458,6 +465,7 @@ module Reservations
       assert_equal users_credit_count + 1, UsersCredit.count
 
       # subscription assertions
+      assert_equal 1, @user_without_subscription.subscriptions.count
       assert_not_nil @user_without_subscription.subscribed_plan
       assert_equal plan.id, @user_without_subscription.subscribed_plan.id
 
diff --git a/test/integration/reservations/create_test.rb b/test/integration/reservations/create_test.rb
index b4856b637..52673061b 100644
--- a/test/integration/reservations/create_test.rb
+++ b/test/integration/reservations/create_test.rb
@@ -42,6 +42,7 @@ module Reservations
       assert_equal subscriptions_count, Subscription.count
 
       # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
       assert_nil @user_without_subscription.subscribed_plan
 
       # reservation assertions
@@ -104,6 +105,10 @@ module Reservations
       assert_equal invoice_count, Invoice.count
       assert_equal invoice_items_count, InvoiceItem.count
       assert_equal notifications_count, Notification.count
+
+      # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
+      assert_nil @user_without_subscription.subscribed_plan
     end
 
     test 'user without subscription reserves a training with success' do
@@ -138,6 +143,10 @@ module Reservations
       assert_equal invoice_count + 1, Invoice.count
       assert_equal invoice_items_count + 1, InvoiceItem.count
 
+      # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
+      assert_nil @user_without_subscription.subscribed_plan
+
       # reservation assertions
       reservation = Reservation.last
 
@@ -204,6 +213,11 @@ module Reservations
       assert_equal invoice_items_count + 2, InvoiceItem.count
       assert_equal users_credit_count + 1, UsersCredit.count
 
+      # subscription assertions
+      assert_equal 1, @user_with_subscription.subscriptions.count
+      assert_not_nil @user_with_subscription.subscribed_plan
+      assert_equal plan.id, @user_with_subscription.subscribed_plan.id
+
       # reservation assertions
       reservation = Reservation.last
 
@@ -273,6 +287,11 @@ module Reservations
       assert_equal invoice_count + 1, Invoice.count
       assert_equal invoice_items_count + 1, InvoiceItem.count
 
+      # subscription assertions
+      assert_equal 1, @user_with_subscription.subscriptions.count
+      assert_not_nil @user_with_subscription.subscribed_plan
+      assert_equal plan.id, @user_with_subscription.subscribed_plan.id
+
       # reservation assertions
       reservation = Reservation.last
 
@@ -339,6 +358,10 @@ module Reservations
       assert_equal users_credit_count, UsersCredit.count
       assert_equal wallet_transactions_count + 1, WalletTransaction.count
 
+      # subscription assertions
+      assert_equal 0, @vlonchamp.subscriptions.count
+      assert_nil @vlonchamp.subscribed_plan
+
       # reservation assertions
       reservation = Reservation.last
 
@@ -374,7 +397,7 @@ module Reservations
       assert_equal transaction.amount, invoice.wallet_amount / 100.0
     end
 
-    test 'user reserves a training and plan by wallet with success' do
+    test 'user reserves a training and a subscription by wallet with success' do
       @vlonchamp = User.find_by(username: 'vlonchamp')
       login_as(@vlonchamp, scope: :user)
 
@@ -411,6 +434,11 @@ module Reservations
       assert_equal invoice_items_count + 2, InvoiceItem.count
       assert_equal wallet_transactions_count + 1, WalletTransaction.count
 
+      # subscription assertions
+      assert_equal 1, @vlonchamp.subscriptions.count
+      assert_not_nil @vlonchamp.subscribed_plan
+      assert_equal plan.id, @vlonchamp.subscribed_plan.id
+
       # reservation assertions
       reservation = Reservation.last
 
@@ -482,6 +510,11 @@ module Reservations
       assert_equal users_credit_count, UsersCredit.count
       assert_equal subscriptions_count + 1, Subscription.count
 
+      # subscription assertions
+      assert_equal 1, @user_without_subscription.subscriptions.count
+      assert_not_nil @user_without_subscription.subscribed_plan
+      assert_equal plan.id, @user_without_subscription.subscribed_plan.id
+
       # reservation assertions
       reservation = Reservation.last
 
@@ -563,6 +596,10 @@ module Reservations
       assert_equal invoice_count, Invoice.count
       assert_equal invoice_items_count, InvoiceItem.count
       assert_equal notifications_count, Notification.count
+
+      # subscription assertions
+      assert_equal 0, @user_without_subscription.subscriptions.count
+      assert_nil @user_without_subscription.subscribed_plan
     end
   end
 end
diff --git a/test/integration/subscriptions/create_as_admin_test.rb b/test/integration/subscriptions/create_as_admin_test.rb
index c0cee90c9..13e0f8057 100644
--- a/test/integration/subscriptions/create_as_admin_test.rb
+++ b/test/integration/subscriptions/create_as_admin_test.rb
@@ -30,6 +30,9 @@ module Subscriptions
       subscription = json_response(response.body)
       assert_equal plan.id, subscription[:plan_id], 'subscribed plan does not match'
 
+      # Check that the user has only one subscription
+      assert_equal 1, user.subscriptions.count
+
       # Check that the user has the correct subscription
       assert_not_nil user.subscription, "user's subscription was not found"
       assert_not_nil user.subscription.plan, "user's subscribed plan was not found"
@@ -55,4 +58,4 @@ module Subscriptions
     end
 
   end
-end
\ No newline at end of file
+end
diff --git a/test/integration/subscriptions/create_as_user_test.rb b/test/integration/subscriptions/create_as_user_test.rb
index 5060eeb3d..fa8729649 100644
--- a/test/integration/subscriptions/create_as_user_test.rb
+++ b/test/integration/subscriptions/create_as_user_test.rb
@@ -9,7 +9,7 @@ class Subscriptions::CreateAsUserTest < ActionDispatch::IntegrationTest
   test 'user successfully takes a subscription' do
     plan = Plan.find_by(group_id: @user.group.id, type: 'Plan', base_name: 'Mensuel')
 
-    VCR.use_cassette("subscriptions_user_create_success") do
+    VCR.use_cassette('subscriptions_user_create_success') do
       post '/api/subscriptions',
            {
              subscription: {
@@ -28,6 +28,9 @@ class Subscriptions::CreateAsUserTest < ActionDispatch::IntegrationTest
     subscription = json_response(response.body)
     assert_equal plan.id, subscription[:plan_id], 'subscribed plan does not match'
 
+    # Check that the user has only one subscription
+    assert_equal 1, @user.subscriptions.count
+
     # Check that the user has the correct subscription
     assert_not_nil @user.subscription, "user's subscription was not found"
     assert_not_nil @user.subscription.plan, "user's subscribed plan was not found"
@@ -39,12 +42,18 @@ class Subscriptions::CreateAsUserTest < ActionDispatch::IntegrationTest
 
     # Check that the user benefit from prices of his plan
     printer = Machine.find_by(slug: 'imprimante-3d')
-    assert_equal 15, (printer.prices.find_by(group_id: @user.group_id, plan_id: @user.subscription.plan_id).amount / 100), 'machine hourly price does not match'
+    assert_equal 15,
+                 (printer.prices.find_by(group_id: @user.group_id, plan_id: @user.subscription.plan_id).amount / 100),
+                 'machine hourly price does not match'
 
     # Check notifications were sent for every admins
-    notifications = Notification.where(notification_type_id: NotificationType.find_by_name('notify_admin_subscribed_plan'), attached_object_type: 'Subscription', attached_object_id: subscription[:id])
+    notifications = Notification.where(
+      notification_type_id: NotificationType.find_by_name('notify_admin_subscribed_plan'),
+      attached_object_type: 'Subscription',
+      attached_object_id: subscription[:id]
+    )
     assert_not_empty notifications, 'no notifications were created'
-    notified_users_ids = notifications.map {|n| n.receiver_id }
+    notified_users_ids = notifications.map(&:receiver_id)
     User.admins.each do |adm|
       assert_includes notified_users_ids, adm.id, "Admin #{adm.id} was not notified"
     end
@@ -61,14 +70,14 @@ class Subscriptions::CreateAsUserTest < ActionDispatch::IntegrationTest
     # get plan for wrong group
     plan = Plan.where.not(group_id: @user.group.id).first
 
-    VCR.use_cassette("subscriptions_user_create_failed") do
+    VCR.use_cassette('subscriptions_user_create_failed') do
       post '/api/subscriptions',
            {
-               subscription: {
-                   plan_id: plan.id,
-                   user_id: @user.id,
-                   card_token: stripe_card_token
-               }
+             subscription: {
+               plan_id: plan.id,
+               user_id: @user.id,
+               card_token: stripe_card_token
+             }
            }.to_json, default_headers
     end
 
@@ -77,7 +86,7 @@ class Subscriptions::CreateAsUserTest < ActionDispatch::IntegrationTest
     assert_equal Mime::JSON, response.content_type
 
     # Check the error was handled
-    assert_match  /plan is not compatible/, response.body
+    assert_match /plan is not compatible/, response.body
 
     # Check that the user has no subscription
     assert_nil @user.subscription, "user's subscription was found"
@@ -89,7 +98,7 @@ class Subscriptions::CreateAsUserTest < ActionDispatch::IntegrationTest
     login_as(@vlonchamp, scope: :user)
     plan = Plan.find_by(group_id: @vlonchamp.group.id, type: 'Plan', base_name: 'Mensuel tarif réduit')
 
-    VCR.use_cassette("subscriptions_user_create_success_with_wallet") do
+    VCR.use_cassette('subscriptions_user_create_success_with_wallet') do
       post '/api/subscriptions',
            {
              subscription: {
@@ -115,16 +124,27 @@ class Subscriptions::CreateAsUserTest < ActionDispatch::IntegrationTest
 
     # Check that the training credits were set correctly
     assert_empty @vlonchamp.training_credits, 'training credits were not reset'
-    assert_equal @vlonchamp.subscription.plan.training_credit_nb, plan.training_credit_nb, 'trainings credits were not allocated'
+    assert_equal @vlonchamp.subscription.plan.training_credit_nb,
+                 plan.training_credit_nb,
+                 'trainings credits were not allocated'
 
     # Check that the user benefit from prices of his plan
     printer = Machine.find_by(slug: 'imprimante-3d')
-    assert_equal 10, (printer.prices.find_by(group_id: @vlonchamp.group_id, plan_id: @vlonchamp.subscription.plan_id).amount / 100), 'machine hourly price does not match'
+    assert_equal 10,
+                 (printer.prices.find_by(
+                   group_id: @vlonchamp.group_id,
+                   plan_id: @vlonchamp.subscription.plan_id).amount / 100
+                 ),
+                 'machine hourly price does not match'
 
     # Check notifications were sent for every admins
-    notifications = Notification.where(notification_type_id: NotificationType.find_by_name('notify_admin_subscribed_plan'), attached_object_type: 'Subscription', attached_object_id: subscription[:id])
+    notifications = Notification.where(
+      notification_type_id: NotificationType.find_by_name('notify_admin_subscribed_plan'),
+      attached_object_type: 'Subscription',
+      attached_object_id: subscription[:id]
+    )
     assert_not_empty notifications, 'no notifications were created'
-    notified_users_ids = notifications.map {|n| n.receiver_id }
+    notified_users_ids = notifications.map(&:receiver_id)
     User.admins.each do |adm|
       assert_includes notified_users_ids, adm.id, "Admin #{adm.id} was not notified"
     end
diff --git a/test/integration/subscriptions/renew_as_admin_test.rb b/test/integration/subscriptions/renew_as_admin_test.rb
index 05027c956..b2ba7883b 100644
--- a/test/integration/subscriptions/renew_as_admin_test.rb
+++ b/test/integration/subscriptions/renew_as_admin_test.rb
@@ -30,6 +30,7 @@ class Subscriptions::RenewAsAdminTest < ActionDispatch::IntegrationTest
 
     # Check that the user has the correct subscription
     assert_not_nil user.subscription, "user's subscription was not found"
+    assert_not_nil user.subscribed_plan, "user's subscribed plan was not found"
     assert_not_nil user.subscription.plan, "user's subscribed plan was not found"
     assert_equal plan.id, user.subscription.plan_id, "user's plan does not match"
 
@@ -38,6 +39,9 @@ class Subscriptions::RenewAsAdminTest < ActionDispatch::IntegrationTest
                  subscription[:expired_at],
                  'subscription expiration date does not match'
 
+    # Check the subscription was correctly saved
+    assert_equal 2, user.subscriptions.count
+
     # Check that the training credits were set correctly
     assert_empty user.training_credits, 'training credits were not reset'
     assert_equal user.subscription.plan.training_credit_nb, plan.training_credit_nb, 'trainings credits were not allocated'
@@ -88,6 +92,9 @@ class Subscriptions::RenewAsAdminTest < ActionDispatch::IntegrationTest
     assert_equal subscription.plan_id, res_subscription[:plan_id], 'subscribed plan does not match'
     assert_dates_equal new_date, res_subscription[:expired_at], 'subscription end date was not updated'
 
+    # Check the subscription was correctly saved
+    assert_equal 1, user.subscriptions.count
+
     # Check notification was sent to the user
     notification = Notification.find_by(
       notification_type_id: NotificationType.find_by_name('notify_member_subscription_extended'),
@@ -122,6 +129,9 @@ class Subscriptions::RenewAsAdminTest < ActionDispatch::IntegrationTest
     res_subscription = json_response(response.body)
     assert_equal subscription.plan_id, res_subscription[:plan_id], 'subscribed plan does not match'
 
+    # Check the subscription was correctly saved
+    assert_equal 2, user.subscriptions.count
+
     # Check that the subscription is new
     assert_not_equal subscription.id, res_subscription[:id], 'subscription id has not changed'
     assert_dates_equal new_date, res_subscription[:expired_at], 'subscription end date does not match'
diff --git a/test/integration/subscriptions/renew_as_user_test.rb b/test/integration/subscriptions/renew_as_user_test.rb
index cd440b7e0..b221c589a 100644
--- a/test/integration/subscriptions/renew_as_user_test.rb
+++ b/test/integration/subscriptions/renew_as_user_test.rb
@@ -30,6 +30,9 @@ class Subscriptions::RenewAsUserTest < ActionDispatch::IntegrationTest
     subscription = json_response(response.body)
     assert_equal plan.id, subscription[:plan_id], 'subscribed plan does not match'
 
+    # Check the subscription was correctly saved
+    assert_equal 2, @user.subscriptions.count
+
     # Check that the user has the correct subscription
     assert_not_nil @user.subscription, "user's subscription was not found"
 
@@ -93,6 +96,10 @@ class Subscriptions::RenewAsUserTest < ActionDispatch::IntegrationTest
 
     # Check that the user's subscription has not changed
     assert_equal previous_expiration, @user.subscription.expired_at.to_i, "user's subscription has changed"
+
+    # Check the subscription was not saved
+    assert_equal 1, @user.subscriptions.count
+
   end
 
 end