1 files changed, 24 insertions, 0 deletions
diff --git a/spec/models/issue_spec.rb b/spec/models/issue_spec.rb
index 6ae33fe2642..a3d015fd768 100644
--- a/spec/models/issue_spec.rb
+++ b/spec/models/issue_spec.rb
@@ -2002,6 +2002,30 @@ RSpec.describe Issue, feature_category: :team_planning do
     it { is_expected.to eq(WorkItems::Type.default_by_type(::Issue::DEFAULT_ISSUE_TYPE)) }
   end
 
+  describe '#unsubscribe_email_participant' do
+    let_it_be(:email) { 'email@example.com' }
+
+    let_it_be(:issue1) do
+      create(:issue, project: reusable_project, external_author: email) do |issue|
+        issue.issue_email_participants.create!(email: email)
+      end
+    end
+
+    let_it_be(:issue2) do
+      create(:issue, project: reusable_project, external_author: email) do |issue|
+        issue.issue_email_participants.create!(email: email)
+      end
+    end
+
+    it 'deletes email for issue1' do
+      expect { issue1.unsubscribe_email_participant(email) }.to change { issue1.issue_email_participants.count }.by(-1)
+    end
+
+    it 'does not delete email for issue2 when issue1 is used' do
+      expect { issue1.unsubscribe_email_participant(email) }.not_to change { issue2.issue_email_participants.count }
+    end
+  end
+
   describe 'issue_type enum generated methods' do
     using RSpec::Parameterized::TableSyntax