fix: 24982- Remove'Signed in successfully' message

After this change the sign-in-success flash message will not be shown

refactor: set flash message to be nil while signing in

test: changed tests to reflect removal of sign-in message

refactor: adding signed_in message back

See Merge Request !7837

issue#24982

app/controllers/sessions_controller.rb

@@ -31,6 +31,8 @@ class SessionsController < Devise::SessionsController
         resource.update_attributes(reset_password_token: nil,
                                    reset_password_sent_at: nil)
       end
+      # hide the signed-in notification
+      flash[:notice] = nil
       log_audit_event(current_user, with: authentication_method)
     end
   end

changelogs/unreleased/24982-ux-improvement-sign-in-success-message.yml

+---
+title: 'fix: 24982- Remove''Signed in successfully'' message After this change the
+  sign-in-success flash message will not be shown'
+merge_request: 7837
+author: jnoortheen

spec/controllers/sessions_controller_spec.rb

@@ -22,7 +22,6 @@ describe SessionsController do
         it 'authenticates user correctly' do
           post(:create, user: { login: user.username, password: user.password })
 
-          expect(response).to set_flash.to /Signed in successfully/
           expect(subject.current_user). to eq user
         end
 

spec/features/u2f_spec.rb

@@ -163,8 +163,7 @@ feature 'Using U2F (Universal 2nd Factor) Devices for Authentication', feature:
         click_on "Sign in via U2F device"
         expect(page.body).to match('We heard back from your U2F device')
         click_on "Authenticate via U2F Device"
-
-        expect(page.body).to match('Signed in successfully')
+        expect(page.body).to match('href="/users/sign_out"')
       end
     end
 
@@ -178,7 +177,7 @@ feature 'Using U2F (Universal 2nd Factor) Devices for Authentication', feature:
         expect(page.body).to match('We heard back from your U2F device')
         click_on "Authenticate via U2F Device"
 
-        expect(page.body).to match('Signed in successfully')
+        expect(page.body).to match('href="/users/sign_out"')
       end
     end
 
@@ -234,7 +233,7 @@ feature 'Using U2F (Universal 2nd Factor) Devices for Authentication', feature:
           expect(page.body).to match('We heard back from your U2F device')
           click_on "Authenticate via U2F Device"
 
-          expect(page.body).to match('Signed in successfully')
+          expect(page.body).to match('href="/users/sign_out"')
         end
       end
     end
@@ -275,7 +274,7 @@ feature 'Using U2F (Universal 2nd Factor) Devices for Authentication', feature:
           expect(page.body).to match('We heard back from your U2F device')
           click_on "Authenticate via U2F Device"
 
-          expect(page.body).to match('Signed in successfully')
+          expect(page.body).to match('href="/users/sign_out"')
 
           logout
         end