1 files changed, 60 insertions, 0 deletions
diff --git a/spec/requests/api/graphql/mutations/incident_management/timeline_event/create_spec.rb b/spec/requests/api/graphql/mutations/incident_management/timeline_event/create_spec.rb
new file mode 100644
index 00000000000..3ea8b38e20f
--- /dev/null
+++ b/spec/requests/api/graphql/mutations/incident_management/timeline_event/create_spec.rb
@@ -0,0 +1,60 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Creating an incident timeline event' do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+  let_it_be(:project) { create(:project) }
+  let_it_be(:incident) { create(:incident, project: project) }
+  let_it_be(:event_occurred_at) { Time.current }
+  let_it_be(:note) { 'demo note' }
+
+  let(:input) { { incident_id: incident.to_global_id.to_s, note: note, occurred_at: event_occurred_at } }
+  let(:mutation) do
+    graphql_mutation(:timeline_event_create, input) do
+      <<~QL
+        clientMutationId
+        errors
+        timelineEvent {
+          id
+          author { id username }
+          incident { id title }
+          note
+          editable
+          action
+          occurredAt
+        }
+      QL
+    end
+  end
+
+  let(:mutation_response) { graphql_mutation_response(:timeline_event_create) }
+
+  before do
+    project.add_developer(user)
+  end
+
+  it 'creates incident timeline event', :aggregate_failures do
+    post_graphql_mutation(mutation, current_user: user)
+
+    timeline_event_response = mutation_response['timelineEvent']
+
+    expect(response).to have_gitlab_http_status(:success)
+    expect(timeline_event_response).to include(
+      'author' => {
+        'id' => user.to_global_id.to_s,
+        'username' => user.username
+      },
+      'incident' => {
+        'id' => incident.to_global_id.to_s,
+        'title' => incident.title
+      },
+      'note' => note,
+      'action' => 'comment',
+      'editable' => false,
+      'occurredAt' => event_occurred_at.iso8601
+    )
+  end
+end