1 files changed, 114 insertions, 0 deletions
diff --git a/spec/requests/api/graphql/project/jira_projects_spec.rb b/spec/requests/api/graphql/project/jira_projects_spec.rb
new file mode 100644
index 00000000000..d67c89f18c9
--- /dev/null
+++ b/spec/requests/api/graphql/project/jira_projects_spec.rb
@@ -0,0 +1,114 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'query Jira projects' do
+  include GraphqlHelpers
+
+  let_it_be(:current_user) { create(:user) }
+  let_it_be(:project) { create(:project) }
+
+  include_context 'jira projects request context'
+
+  let(:services) { graphql_data_at(:project, :services, :edges) }
+  let(:jira_projects) { services.first.dig('node', 'projects', 'nodes') }
+  let(:projects_query) { 'projects' }
+  let(:query) do
+    %(
+      query {
+        project(fullPath: "#{project.full_path}") {
+          services(active: true, type: JIRA_SERVICE) {
+            edges {
+              node {
+                ... on JiraService {
+                  %{projects_query} {
+                    nodes {
+                      key
+                      name
+                      projectId
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    ) % { projects_query: projects_query }
+  end
+
+  context 'when user does not have access' do
+    it_behaves_like 'unauthorized users cannot read services'
+  end
+
+  context 'when user can access project services' do
+    before do
+      project.add_maintainer(current_user)
+      post_graphql(query, current_user: current_user)
+    end
+
+    it_behaves_like 'a working graphql query'
+
+    it 'retuns list of jira projects' do
+      project_keys = jira_projects.map { |jp| jp['key'] }
+      project_names = jira_projects.map { |jp| jp['name'] }
+      project_ids = jira_projects.map { |jp| jp['projectId'] }
+
+      expect(jira_projects.size).to eq(2)
+      expect(project_keys).to eq(%w(EX ABC))
+      expect(project_names).to eq(%w(Example Alphabetical))
+      expect(project_ids).to eq([10000, 10001])
+    end
+
+    context 'with pagination' do
+      context 'when fetching limited number of projects' do
+        shared_examples_for 'fetches first project' do
+          it 'retuns first project from list of fetched projects' do
+            project_keys = jira_projects.map { |jp| jp['key'] }
+            project_names = jira_projects.map { |jp| jp['name'] }
+            project_ids = jira_projects.map { |jp| jp['projectId'] }
+
+            expect(jira_projects.size).to eq(1)
+            expect(project_keys).to eq(%w(EX))
+            expect(project_names).to eq(%w(Example))
+            expect(project_ids).to eq([10000])
+          end
+        end
+
+        context 'without cursor' do
+          let(:projects_query) { 'projects(first: 1)' }
+
+          it_behaves_like 'fetches first project'
+        end
+
+        context 'with before cursor' do
+          let(:projects_query) { 'projects(before: "Mg==", first: 1)' }
+
+          it_behaves_like 'fetches first project'
+        end
+
+        context 'with after cursor' do
+          let(:projects_query) { 'projects(after: "MA==", first: 1)' }
+
+          it_behaves_like 'fetches first project'
+        end
+      end
+
+      context 'with valid but inexistent after cursor' do
+        let(:projects_query) { 'projects(after: "MTk==")' }
+
+        it 'retuns empty list of jira projects' do
+          expect(jira_projects.size).to eq(0)
+        end
+      end
+
+      context 'with invalid after cursor' do
+        let(:projects_query) { 'projects(after: "invalid==")' }
+
+        it 'treats the invalid cursor as no cursor and returns list of jira projects' do
+          expect(jira_projects.size).to eq(2)
+        end
+      end
+    end
+  end
+end