1 files changed, 94 insertions, 0 deletions
diff --git a/spec/graphql/resolvers/ci/group_runners_resolver_spec.rb b/spec/graphql/resolvers/ci/group_runners_resolver_spec.rb
new file mode 100644
index 00000000000..89a2437a189
--- /dev/null
+++ b/spec/graphql/resolvers/ci/group_runners_resolver_spec.rb
@@ -0,0 +1,94 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Resolvers::Ci::GroupRunnersResolver do
+  include GraphqlHelpers
+
+  describe '#resolve' do
+    subject { resolve(described_class, obj: obj, ctx: { current_user: user }, args: args) }
+
+    include_context 'runners resolver setup'
+
+    let(:obj) { group }
+    let(:args) { {} }
+
+    # First, we can do a couple of basic real tests to verify common cases. That ensures that the code works.
+    context 'when user cannot see runners' do
+      it 'returns no runners' do
+        expect(subject.items.to_a).to eq([])
+      end
+    end
+
+    context 'with user as group owner' do
+      before do
+        group.add_owner(user)
+      end
+
+      it 'returns all the runners' do
+        expect(subject.items.to_a).to contain_exactly(inactive_project_runner, offline_project_runner, group_runner, subgroup_runner)
+      end
+
+      context 'with membership direct' do
+        let(:args) { { membership: :direct } }
+
+        it 'returns only direct runners' do
+          expect(subject.items.to_a).to contain_exactly(group_runner)
+        end
+      end
+    end
+
+    # Then, we can check specific edge cases for this resolver
+    context 'with obj set to nil' do
+      let(:obj) { nil }
+
+      it 'raises an error' do
+        expect { subject }.to raise_error('Expected group missing')
+      end
+    end
+
+    context 'with obj not set to group' do
+      let(:obj) { build(:project) }
+
+      it 'raises an error' do
+        expect { subject }.to raise_error('Expected group missing')
+      end
+    end
+
+    # Here we have a mocked part. We assume that all possible edge cases are covered in RunnersFinder spec. So we don't need to test them twice.
+    # Only thing we can do is to verify that args from the resolver is correctly transformed to params of the Finder and we return the Finder's result back.
+    describe 'Allowed query arguments' do
+      let(:finder) { instance_double(::Ci::RunnersFinder) }
+      let(:args) do
+        {
+          status: 'active',
+          type: :group_type,
+          tag_list: ['active_runner'],
+          search: 'abc',
+          sort: :contacted_asc,
+          membership: :descendants
+        }
+      end
+
+      let(:expected_params) do
+        {
+          status_status: 'active',
+          type_type: :group_type,
+          tag_name: ['active_runner'],
+          preload: { tag_name: nil },
+          search: 'abc',
+          sort: 'contacted_asc',
+          membership: :descendants,
+          group: group
+        }
+      end
+
+      it 'calls RunnersFinder with expected arguments' do
+        allow(::Ci::RunnersFinder).to receive(:new).with(current_user: user, params: expected_params).once.and_return(finder)
+        allow(finder).to receive(:execute).once.and_return([:execute_return_value])
+
+        expect(subject.items.to_a).to eq([:execute_return_value])
+      end
+    end
+  end
+end