1 files changed, 57 insertions, 0 deletions

diff --git a/spec/requests/api/graphql/mutations/issues/set_severity_spec.rb b/spec/requests/api/graphql/mutations/issues/set_severity_spec.rb
new file mode 100644
index 00000000000..96fd2368765
--- /dev/null
+++ b/spec/requests/api/graphql/mutations/issues/set_severity_spec.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Setting severity level of an incident' do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+  let(:incident) { create(:incident) }
+  let(:project) { incident.project }
+  let(:input) { { severity: 'CRITICAL' } }
+
+  let(:mutation) do
+    variables = {
+      project_path: project.full_path,
+      iid: incident.iid.to_s
+    }
+
+    graphql_mutation(:issue_set_severity, variables.merge(input),
+                     <<-QL.strip_heredoc
+                       clientMutationId
+                       errors
+                       issue {
+                         iid
+                         severity
+                       }
+                     QL
+    )
+  end
+
+  def mutation_response
+    graphql_mutation_response(:issue_set_severity)
+  end
+
+  context 'when the user is not allowed to update the incident' do
+    it 'returns an error' do
+      error = "The resource that you are attempting to access does not exist or you don't have permission to perform this action"
+      post_graphql_mutation(mutation, current_user: user)
+
+      expect(response).to have_gitlab_http_status(:success)
+      expect(graphql_errors).to include(a_hash_including('message' => error))
+    end
+  end
+
+  context 'when the user is allowed to update the incident' do
+    before do
+      project.add_developer(user)
+    end
+
+    it 'updates the issue' do
+      post_graphql_mutation(mutation, current_user: user)
+
+      expect(response).to have_gitlab_http_status(:success)
+      expect(mutation_response.dig('issue', 'severity')).to eq('CRITICAL')
+    end
+  end
+end