1 files changed, 41 insertions, 4 deletions

diff --git a/spec/graphql/resolvers/issues_resolver_spec.rb b/spec/graphql/resolvers/issues_resolver_spec.rb
index 6e802bf7d25..7c2ceb50066 100644
--- a/spec/graphql/resolvers/issues_resolver_spec.rb
+++ b/spec/graphql/resolvers/issues_resolver_spec.rb
@@ -46,10 +46,6 @@ RSpec.describe Resolvers::IssuesResolver do
         expect(resolve_issues(milestone_title: [milestone.title])).to contain_exactly(issue1)
       end
 
-      it 'filters by assignee_username' do
-        expect(resolve_issues(assignee_username: [assignee.username])).to contain_exactly(issue2)
-      end
-
       it 'filters by two assignees' do
         assignee2 = create(:user)
         issue2.update!(assignees: [assignee, assignee2])
@@ -78,6 +74,24 @@ RSpec.describe Resolvers::IssuesResolver do
         expect(resolve_issues(label_name: [label1.title, label2.title])).to contain_exactly(issue2)
       end
 
+      describe 'filters by assignee_username' do
+        it 'filters by assignee_username' do
+          expect(resolve_issues(assignee_username: [assignee.username])).to contain_exactly(issue2)
+        end
+
+        it 'filters by assignee_usernames' do
+          expect(resolve_issues(assignee_usernames: [assignee.username])).to contain_exactly(issue2)
+        end
+
+        context 'when both assignee_username and assignee_usernames are provided' do
+          it 'raises a mutually exclusive filter error' do
+            expect do
+              resolve_issues(assignee_usernames: [assignee.username], assignee_username: assignee.username)
+            end.to raise_error(Gitlab::Graphql::Errors::ArgumentError, 'only one of [assigneeUsernames, assigneeUsername] arguments is allowed at the same time.')
+          end
+        end
+      end
+
       describe 'filters by created_at' do
         it 'filters by created_before' do
           expect(resolve_issues(created_before: 2.hours.ago)).to contain_exactly(issue1)
@@ -144,6 +158,29 @@ RSpec.describe Resolvers::IssuesResolver do
         end
       end
 
+      describe 'filters by negated params' do
+        it 'returns issues without the specified iids' do
+          expect(resolve_issues(not: { iids: [issue1.iid] })).to contain_exactly(issue2)
+        end
+
+        it 'returns issues without the specified label names' do
+          expect(resolve_issues(not: { label_name: [label1.title] })).to be_empty
+          expect(resolve_issues(not: { label_name: [label2.title] })).to contain_exactly(issue1)
+        end
+
+        it 'returns issues without the specified milestone' do
+          expect(resolve_issues(not: { milestone_title: [milestone.title] })).to contain_exactly(issue2)
+        end
+
+        it 'returns issues without the specified assignee_usernames' do
+          expect(resolve_issues(not: { assignee_usernames: [assignee.username] })).to contain_exactly(issue1)
+        end
+
+        it 'returns issues without the specified assignee_id' do
+          expect(resolve_issues(not: { assignee_id: [assignee.id] })).to contain_exactly(issue1)
+        end
+      end
+
       describe 'sorting' do
         context 'when sorting by created' do
           it 'sorts issues ascending' do