Extract shared components from Clusters::CreateService spec

spec/services/clusters/create_service_spec.rb

@@ -8,80 +8,22 @@ describe Clusters::CreateService do
   subject { described_class.new(project, user, params).execute(access_token) }
 
   context 'when provider is gcp' do
-    shared_context 'valid params' do
-      let(:params) do
-        {
-          name: 'test-cluster',
-          provider_type: :gcp,
-          provider_gcp_attributes: {
-            gcp_project_id: 'gcp-project',
-            zone: 'us-central1-a',
-            num_nodes: 1,
-            machine_type: 'machine_type-a'
-          }
-        }
-      end
-    end
-
-    shared_context 'invalid params' do
-      let(:params) do
-        {
-          name: 'test-cluster',
-          provider_type: :gcp,
-          provider_gcp_attributes: {
-            gcp_project_id: '!!!!!!!',
-            zone: 'us-central1-a',
-            num_nodes: 1,
-            machine_type: 'machine_type-a'
-          }
-        }
-      end
-    end
-
-    shared_examples 'create cluster' do
-      it 'creates a cluster object and performs a worker' do
-        expect(ClusterProvisionWorker).to receive(:perform_async)
-
-        expect { subject }
-          .to change { Clusters::Cluster.count }.by(1)
-          .and change { Clusters::Providers::Gcp.count }.by(1)
-
-        expect(subject.name).to eq('test-cluster')
-        expect(subject.user).to eq(user)
-        expect(subject.project).to eq(project)
-        expect(subject.provider.gcp_project_id).to eq('gcp-project')
-        expect(subject.provider.zone).to eq('us-central1-a')
-        expect(subject.provider.num_nodes).to eq(1)
-        expect(subject.provider.machine_type).to eq('machine_type-a')
-        expect(subject.provider.access_token).to eq(access_token)
-        expect(subject.platform).to be_nil
-      end
-    end
-
-    shared_examples 'error' do
-      it 'returns an error' do
-        expect(ClusterProvisionWorker).not_to receive(:perform_async)
-        expect { subject }.to change { Clusters::Cluster.count }.by(0)
-        expect(subject.errors[:"provider_gcp.gcp_project_id"]).to be_present
-      end
-    end
-
     context 'when project has no clusters' do
       context 'when correct params' do
-        include_context 'valid params'
+        include_context 'valid cluster create params'
 
-        include_examples 'create cluster'
+        include_examples 'create cluster service success'
       end
 
       context 'when invalid params' do
-        include_context 'invalid params'
+        include_context 'invalid cluster create params'
 
-        include_examples 'error'
+        include_examples 'create cluster service error'
       end
     end
 
     context 'when project has a cluster' do
-      include_context 'valid params'
+      include_context 'valid cluster create params'
       let!(:cluster) { create(:cluster, :provided_by_gcp, :production_environment, projects: [project]) }
 
       it 'does not create a cluster' do

spec/support/services/clusters/create_service_shared.rb

+shared_context 'valid cluster create params' do
+  let(:params) do
+    {
+      name: 'test-cluster',
+      provider_type: :gcp,
+      provider_gcp_attributes: {
+        gcp_project_id: 'gcp-project',
+        zone: 'us-central1-a',
+        num_nodes: 1,
+        machine_type: 'machine_type-a'
+      }
+    }
+  end
+end
+
+shared_context 'invalid cluster create params' do
+  let(:params) do
+    {
+      name: 'test-cluster',
+      provider_type: :gcp,
+      provider_gcp_attributes: {
+        gcp_project_id: '!!!!!!!',
+        zone: 'us-central1-a',
+        num_nodes: 1,
+        machine_type: 'machine_type-a'
+      }
+    }
+  end
+end
+
+shared_examples 'create cluster service success' do
+  it 'creates a cluster object and performs a worker' do
+    expect(ClusterProvisionWorker).to receive(:perform_async)
+
+    expect { subject }
+      .to change { Clusters::Cluster.count }.by(1)
+      .and change { Clusters::Providers::Gcp.count }.by(1)
+
+    expect(subject.name).to eq('test-cluster')
+    expect(subject.user).to eq(user)
+    expect(subject.project).to eq(project)
+    expect(subject.provider.gcp_project_id).to eq('gcp-project')
+    expect(subject.provider.zone).to eq('us-central1-a')
+    expect(subject.provider.num_nodes).to eq(1)
+    expect(subject.provider.machine_type).to eq('machine_type-a')
+    expect(subject.provider.access_token).to eq(access_token)
+    expect(subject.platform).to be_nil
+  end
+end
+
+shared_examples 'create cluster service error' do
+  it 'returns an error' do
+    expect(ClusterProvisionWorker).not_to receive(:perform_async)
+    expect { subject }.to change { Clusters::Cluster.count }.by(0)
+    expect(subject.errors[:"provider_gcp.gcp_project_id"]).to be_present
+  end
+end