Move shared examples into the only file where used

This will make it easier to perform in place adjustments, etc for future
MRs involving group clusters.

spec/services/clusters/create_service_spec.rb

@@ -2,33 +2,104 @@ require 'spec_helper'
 
 describe Clusters::CreateService do
   let(:access_token) { 'xxx' }
-  let(:project) { create(:project) }
   let(:user) { create(:user) }
+  let(:service) { described_class.new(user, params) }
 
-  subject { described_class.new(user, params).execute(project: project, access_token: access_token) }
+  describe '#execute' do
+    before do
+      allow(ClusterProvisionWorker).to receive(:perform_async)
+    end
 
-  context 'when provider is gcp' do
-    context 'when project has no clusters' do
-      context 'when correct params' do
-        include_context 'valid cluster create params'
+    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',
+            legacy_abac: 'true'
+          }
+        }
+      end
+    end
 
-        include_examples 'create cluster service success'
+    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
 
-      context 'when invalid params' do
-        include_context 'invalid cluster create params'
+    shared_examples 'create cluster service success' do
+      it 'creates a cluster object and performs a worker' do
+        expect(ClusterProvisionWorker).to receive(:perform_async)
 
-        include_examples 'create cluster service error'
+        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.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.provider).to be_legacy_abac
+        expect(subject.platform).to be_nil
       end
     end
 
-    context 'when project has a cluster' do
-      include_context 'valid cluster create params'
-      let!(:cluster) { create(:cluster, :provided_by_gcp, :production_environment, projects: [project]) }
-
-      it 'does not create a cluster' do
+    shared_examples 'create cluster service error' do
+      it 'returns an error' do
         expect(ClusterProvisionWorker).not_to receive(:perform_async)
-        expect { subject }.to raise_error(ArgumentError).and change { Clusters::Cluster.count }.by(0)
+        expect { subject }.to change { Clusters::Cluster.count }.by(0)
+        expect(subject.errors[:"provider_gcp.gcp_project_id"]).to be_present
+      end
+    end
+
+    context 'create cluster for project' do
+      let(:project) { create(:project) }
+
+      subject { service.execute(project: project, access_token: access_token) }
+
+      context 'when project has no clusters' do
+        context 'when correct params' do
+          include_context 'valid cluster create params'
+
+          include_examples 'create cluster service success'
+
+          it 'associates project to the cluster' do
+            expect(subject.project).to eq(project)
+          end
+        end
+
+        context 'when invalid params' do
+          include_context 'invalid cluster create params'
+
+          include_examples 'create cluster service error'
+        end
+      end
+
+      context 'when project has a cluster' do
+        include_context 'valid cluster create params'
+        let!(:cluster) { create(:cluster, :provided_by_gcp, :production_environment, projects: [project]) }
+
+        it 'does not create a cluster' do
+          expect(ClusterProvisionWorker).not_to receive(:perform_async)
+          expect { subject }.to raise_error(ArgumentError).and change { Clusters::Cluster.count }.by(0)
+        end
       end
     end
   end

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',
-        legacy_abac: 'true'
-      }
-    }
-  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.provider).to be_legacy_abac
-    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