Resolve "Allow filtering of issues by reaction emoji in GraphQL"

app/graphql/resolvers/concerns/issue_resolver_arguments.rb

@@ -30,7 +30,7 @@ module IssueResolverArguments
              description: 'Usernames of users assigned to the issue.'
     argument :assignee_id, GraphQL::Types::String,
              required: false,
-             description: 'ID of a user assigned to the issues, "none" and "any" values are supported.'
+             description: 'ID of a user assigned to the issues. Wildcard values "NONE" and "ANY" are supported.'
     argument :created_before, Types::TimeType,
              required: false,
              description: 'Issues created before this date.'
@@ -59,6 +59,9 @@ module IssueResolverArguments
     argument :milestone_wildcard_id, ::Types::MilestoneWildcardIdEnum,
               required: false,
               description: 'Filter issues by milestone ID wildcard.'
+    argument :my_reaction_emoji, GraphQL::Types::String,
+             required: false,
+             description: 'Filter by reaction emoji applied by the current user. Wildcard values "NONE" and "ANY" are supported.'
     argument :not, Types::Issues::NegatedIssueFilterInputType,
              description: 'Negated arguments.',
              prepare: ->(negated_args, ctx) { negated_args.to_h },

app/graphql/types/boards/board_issuable_input_base_type.rb

@@ -14,7 +14,7 @@ module Types
 
       argument :my_reaction_emoji, GraphQL::Types::String,
                required: false,
-               description: 'Filter by reaction emoji applied by the current user.'
+               description: 'Filter by reaction emoji applied by the current user. Wildcard values "NONE" and "ANY" are supported.'
     end
   end
 end

app/graphql/types/issues/negated_issue_filter_input_type.rb

@@ -23,6 +23,9 @@ module Types
       argument :milestone_wildcard_id, ::Types::NegatedMilestoneWildcardIdEnum,
                 required: false,
                 description: 'Filter by negated milestone wildcard values.'
+      argument :my_reaction_emoji, GraphQL::Types::String,
+                required: false,
+                description: 'Filter by reaction emoji applied by the current user.'
     end
   end
 end

spec/graphql/resolvers/issues_resolver_spec.rb

@@ -19,6 +19,7 @@ RSpec.describe Resolvers::IssuesResolver do
   let_it_be(:issue4)    { create(:issue) }
   let_it_be(:label1)    { create(:label, project: project) }
   let_it_be(:label2)    { create(:label, project: project) }
+  let_it_be(:upvote_award) { create(:award_emoji, :upvote, user: current_user, awardable: issue1) }
 
   specify do
     expect(described_class).to have_nullable_graphql_type(Types::IssueType.connection_type)
@@ -198,6 +199,27 @@ RSpec.describe Resolvers::IssuesResolver do
         end
       end
 
+      context 'filtering by reaction emoji' do
+        let_it_be(:downvoted_issue) { create(:issue, project: project) }
+        let_it_be(:downvote_award) { create(:award_emoji, :downvote, user: current_user, awardable: downvoted_issue) }
+
+        it 'filters by reaction emoji' do
+          expect(resolve_issues(my_reaction_emoji: upvote_award.name)).to contain_exactly(issue1)
+        end
+
+        it 'filters by reaction emoji wildcard "none"' do
+          expect(resolve_issues(my_reaction_emoji: 'none')).to contain_exactly(issue2)
+        end
+
+        it 'filters by reaction emoji wildcard "any"' do
+          expect(resolve_issues(my_reaction_emoji: 'any')).to contain_exactly(issue1, downvoted_issue)
+        end
+
+        it 'filters by negated reaction emoji' do
+          expect(resolve_issues(not: { my_reaction_emoji: downvote_award.name })).to contain_exactly(issue1, issue2)
+        end
+      end
+
       context 'when searching issues' do
         it 'returns correct issues' do
           expect(resolve_issues(search: 'foo')).to contain_exactly(issue2)

spec/requests/api/graphql/project/issues_spec.rb

@@ -61,6 +61,34 @@ RSpec.describe 'getting an issue list for a project' do
     end
   end
 
+  context 'filtering by my_reaction_emoji' do
+    using RSpec::Parameterized::TableSyntax
+
+    let_it_be(:upvote_award) { create(:award_emoji, :upvote, user: current_user, awardable: issue_a) }
+
+    let(:issue_a_gid) { issue_a.to_global_id.to_s }
+    let(:issue_b_gid) { issue_b.to_global_id.to_s }
+
+    where(:value, :gids) do
+      'thumbsup'   | lazy { [issue_a_gid] }
+      'ANY'        | lazy { [issue_a_gid] }
+      'any'        | lazy { [issue_a_gid] }
+      'AnY'        | lazy { [issue_a_gid] }
+      'NONE'       | lazy { [issue_b_gid] }
+      'thumbsdown' | lazy { [] }
+    end
+
+    with_them do
+      let(:issue_filter_params) { { my_reaction_emoji: value } }
+
+      it 'returns correctly filtered issues' do
+        post_graphql(query, current_user: current_user)
+
+        expect(graphql_dig_at(issues_data, :node, :id)).to eq(gids)
+      end
+    end
+  end
+
   context 'when limiting the number of results' do
     let(:query) do
       <<~GQL