From ee60128cefae3122f21987b72c60a268ddc8f6b9 Mon Sep 17 00:00:00 2001
From: Lin Jen-Shin <godfat@godfat.org>
Date: Thu, 31 Jan 2019 01:18:18 +0800
Subject: Add argument iids to IssuesResolver

---
 app/graphql/resolvers/issues_resolver.rb             |  4 ++++
 ...w-arguments-iid-for-issuesresolver-in-graphql.yml |  5 +++++
 spec/graphql/resolvers/issues_resolver_spec.rb       | 20 ++++++++++++++++++++
 3 files changed, 29 insertions(+)
 create mode 100644 changelogs/unreleased/57063-implement-new-arguments-iid-for-issuesresolver-in-graphql.yml

diff --git a/app/graphql/resolvers/issues_resolver.rb b/app/graphql/resolvers/issues_resolver.rb
index 4ab3c13787a..95e66fb3b7c 100644
--- a/app/graphql/resolvers/issues_resolver.rb
+++ b/app/graphql/resolvers/issues_resolver.rb
@@ -4,6 +4,10 @@ module Resolvers
   class IssuesResolver < BaseResolver
     extend ActiveSupport::Concern
 
+    argument :iids, [GraphQL::ID_TYPE],
+              required: false,
+              description: 'The list of IIDs of issues, e.g., [1, 2]'
+
     argument :search, GraphQL::STRING_TYPE,
               required: false
     argument :sort, Types::Sort,
diff --git a/changelogs/unreleased/57063-implement-new-arguments-iid-for-issuesresolver-in-graphql.yml b/changelogs/unreleased/57063-implement-new-arguments-iid-for-issuesresolver-in-graphql.yml
new file mode 100644
index 00000000000..b05ab07e14c
--- /dev/null
+++ b/changelogs/unreleased/57063-implement-new-arguments-iid-for-issuesresolver-in-graphql.yml
@@ -0,0 +1,5 @@
+---
+title: Add argument iids for issues in GraphQL
+merge_request: 24802
+author:
+type: added
diff --git a/spec/graphql/resolvers/issues_resolver_spec.rb b/spec/graphql/resolvers/issues_resolver_spec.rb
index ca90673521c..1a54ab540fc 100644
--- a/spec/graphql/resolvers/issues_resolver_spec.rb
+++ b/spec/graphql/resolvers/issues_resolver_spec.rb
@@ -32,6 +32,26 @@ describe Resolvers::IssuesResolver do
 
       expect(resolve_issues).to contain_exactly(issue, issue2)
     end
+
+    it 'finds a specific issue with iids' do
+      expect(resolve_issues(iids: issue.iid)).to contain_exactly(issue)
+    end
+
+    it 'finds multiple issues with iids' do
+      expect(resolve_issues(iids: [issue.iid, issue2.iid]))
+        .to contain_exactly(issue, issue2)
+    end
+
+    it 'finds only the issues within the project we are looking at' do
+      another_project = create(:project)
+      iids = [issue, issue2].map(&:iid)
+
+      iids.each do |iid|
+        create(:issue, project: another_project, iid: iid)
+      end
+
+      expect(resolve_issues(iids: iids)).to contain_exactly(issue, issue2)
+    end
   end
 
   def resolve_issues(args = {}, context = { current_user: current_user })
-- 
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