1 files changed, 92 insertions, 0 deletions
diff --git a/spec/graphql/mutations/ci/runner/delete_spec.rb b/spec/graphql/mutations/ci/runner/delete_spec.rb
new file mode 100644
index 00000000000..82873c96c3e
--- /dev/null
+++ b/spec/graphql/mutations/ci/runner/delete_spec.rb
@@ -0,0 +1,92 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Ci::Runner::Delete do
+  include GraphqlHelpers
+
+  let_it_be(:user) { create(:user) }
+  let_it_be(:runner) { create(:ci_runner) }
+
+  let(:current_ctx) { { current_user: user } }
+
+  let(:mutation_params) do
+    {
+      id: runner.to_global_id
+    }
+  end
+
+  specify { expect(described_class).to require_graphql_authorizations(:delete_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 delete owned runner' do
+      let_it_be(:project) { create(:project, creator_id: user.id) }
+      let_it_be(:project_runner, reload: true) { create(:ci_runner, :project, description: 'Project runner', projects: [project]) }
+
+      before_all do
+        project.add_maintainer(user)
+      end
+
+      context 'with one associated project' do
+        it 'deletes runner' do
+          mutation_params[:id] = project_runner.to_global_id
+
+          expect { subject }.to change { Ci::Runner.count }.by(-1)
+          expect(subject[:errors]).to be_empty
+        end
+      end
+
+      context 'with more than one associated project' do
+        let_it_be(:project2) { create(:project, creator_id: user.id) }
+        let_it_be(:two_projects_runner) { create(:ci_runner, :project, description: 'Two projects runner', projects: [project, project2]) }
+
+        before_all do
+          project2.add_maintainer(user)
+        end
+
+        it 'does not delete project runner' do
+          mutation_params[:id] = two_projects_runner.to_global_id
+
+          expect { subject }.not_to change { Ci::Runner.count }
+          expect(subject[:errors]).to contain_exactly("Runner #{two_projects_runner.to_global_id} associated with more than one project")
+        end
+      end
+    end
+
+    context 'when admin can delete runner', :enable_admin_mode do
+      let(:admin_user) { create(:user, :admin) }
+      let(:current_ctx) { { current_user: admin_user } }
+
+      it 'deletes runner' do
+        expect { subject }.to change { Ci::Runner.count }.by(-1)
+        expect(subject[:errors]).to be_empty
+      end
+    end
+  end
+end