1 files changed, 95 insertions, 0 deletions
diff --git a/spec/graphql/mutations/ci/runner/update_spec.rb b/spec/graphql/mutations/ci/runner/update_spec.rb
new file mode 100644
index 00000000000..3db0d552a05
--- /dev/null
+++ b/spec/graphql/mutations/ci/runner/update_spec.rb
@@ -0,0 +1,95 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Ci::Runner::Update do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+  let_it_be(:runner) { create(:ci_runner, active: true, locked: false, run_untagged: true) }
+
+  let(:current_ctx) { { current_user: user } }
+  let(:mutated_runner) { subject[:runner] }
+
+  let(:mutation_params) do
+    {
+      id: runner.to_global_id,
+      description: 'updated description'
+    }
+  end
+
+  specify { expect(described_class).to require_graphql_authorizations(:update_runner) }
+
+  describe '#resolve' do
+    subject do
+      sync(resolve(described_class, args: mutation_params, ctx: current_ctx))
+    end
+
+    context 'when the user cannot admin the runner' do
+      it 'raises an error' do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+    end
+
+    context 'with invalid params' do
+      it 'raises an error' do
+        mutation_params[:id] = "invalid-id"
+
+        expect { subject }.to raise_error(::GraphQL::CoercionError)
+      end
+    end
+
+    context 'when required arguments are missing' do
+      let(:mutation_params) { {} }
+
+      it 'raises an error' do
+        expect { subject }.to raise_error(ArgumentError, "missing keyword: :id")
+      end
+    end
+
+    context 'when user can update runner', :enable_admin_mode do
+      let(:admin_user) { create(:user, :admin) }
+      let(:current_ctx) { { current_user: admin_user } }
+
+      let(:mutation_params) do
+        {
+          id: runner.to_global_id,
+          description: 'updated description',
+          maximum_timeout: 900,
+          access_level: 'ref_protected',
+          active: false,
+          locked: true,
+          run_untagged: false,
+          tag_list: %w(tag1 tag2)
+        }
+      end
+
+      context 'with valid arguments' do
+        it 'updates runner with correct values' do
+          expected_attributes = mutation_params.except(:id, :tag_list)
+
+          subject
+
+          expect(subject[:errors]).to be_empty
+          expect(subject[:runner]).to be_an_instance_of(Ci::Runner)
+          expect(subject[:runner]).to have_attributes(expected_attributes)
+          expect(subject[:runner].tag_list).to contain_exactly(*mutation_params[:tag_list])
+          expect(runner.reload).to have_attributes(expected_attributes)
+          expect(runner.tag_list).to contain_exactly(*mutation_params[:tag_list])
+        end
+      end
+
+      context 'with out-of-range maximum_timeout and missing tag_list' do
+        it 'returns a descriptive error' do
+          mutation_params[:maximum_timeout] = 100
+          mutation_params.delete(:tag_list)
+
+          expect(subject[:errors]).to contain_exactly(
+            'Maximum timeout needs to be at least 10 minutes',
+            'Tags list can not be empty when runner is not allowed to pick untagged jobs'
+          )
+        end
+      end
+    end
+  end
+end