1 files changed, 57 insertions, 0 deletions
diff --git a/spec/services/clusters/build_kubernetes_namespace_service_spec.rb b/spec/services/clusters/build_kubernetes_namespace_service_spec.rb
new file mode 100644
index 00000000000..36c05469542
--- /dev/null
+++ b/spec/services/clusters/build_kubernetes_namespace_service_spec.rb
@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Clusters::BuildKubernetesNamespaceService do
+  let(:cluster) { create(:cluster, :project, :provided_by_gcp) }
+  let(:environment) { create(:environment) }
+  let(:project) { environment.project }
+
+  let(:namespace_generator) { double(from_environment_slug: namespace) }
+  let(:namespace) { 'namespace' }
+
+  subject { described_class.new(cluster, environment: environment).execute }
+
+  before do
+    allow(Gitlab::Kubernetes::DefaultNamespace).to receive(:new).and_return(namespace_generator)
+  end
+
+  shared_examples 'shared attributes' do
+    it 'initializes a new namespace and sets default values' do
+      expect(subject).to be_new_record
+      expect(subject.cluster).to eq cluster
+      expect(subject.project).to eq project
+      expect(subject.namespace).to eq namespace
+      expect(subject.service_account_name).to eq "#{namespace}-service-account"
+    end
+  end
+
+  include_examples 'shared attributes'
+
+  it 'sets cluster_project and environment' do
+    expect(subject.cluster_project).to eq cluster.cluster_project
+    expect(subject.environment).to eq environment
+  end
+
+  context 'namespace per environment is disabled' do
+    let(:cluster) { create(:cluster, :project, :provided_by_gcp, :namespace_per_environment_disabled) }
+
+    include_examples 'shared attributes'
+
+    it 'does not set environment' do
+      expect(subject.cluster_project).to eq cluster.cluster_project
+      expect(subject.environment).to be_nil
+    end
+  end
+
+  context 'group cluster' do
+    let(:cluster) { create(:cluster, :group, :provided_by_gcp) }
+
+    include_examples 'shared attributes'
+
+    it 'does not set cluster_project' do
+      expect(subject.cluster_project).to be_nil
+      expect(subject.environment).to eq environment
+    end
+  end
+end