1 files changed, 74 insertions, 0 deletions
diff --git a/spec/models/clusters/cluster_spec.rb b/spec/models/clusters/cluster_spec.rb
index 0f476e68698..4807957152c 100644
--- a/spec/models/clusters/cluster_spec.rb
+++ b/spec/models/clusters/cluster_spec.rb
@@ -10,6 +10,7 @@ RSpec.describe Clusters::Cluster, :use_clean_rails_memory_store_caching do
 
   subject { build(:cluster) }
 
+  it { is_expected.to include_module(HasEnvironmentScope) }
   it { is_expected.to belong_to(:user) }
   it { is_expected.to belong_to(:management_project).class_name('::Project') }
   it { is_expected.to have_many(:cluster_projects) }
@@ -289,6 +290,79 @@ RSpec.describe Clusters::Cluster, :use_clean_rails_memory_store_caching do
   describe 'validations' do
     subject { cluster.valid? }
 
+    context 'when validates unique_environment_scope' do
+      context 'for a project cluster' do
+        let(:project) { create(:project) }
+
+        before do
+          create(:cluster, projects: [project], environment_scope: 'product/*')
+        end
+
+        context 'when identical environment scope exists in project' do
+          let(:cluster) { build(:cluster, projects: [project], environment_scope: 'product/*') }
+
+          it { is_expected.to be_falsey }
+        end
+
+        context 'when identical environment scope does not exist in project' do
+          let(:cluster) { build(:cluster, projects: [project], environment_scope: '*') }
+
+          it { is_expected.to be_truthy }
+        end
+
+        context 'when identical environment scope exists in different project' do
+          let(:project2) { create(:project) }
+          let(:cluster) { build(:cluster, projects: [project2], environment_scope: 'product/*') }
+
+          it { is_expected.to be_truthy }
+        end
+      end
+
+      context 'for a group cluster' do
+        let(:group) { create(:group) }
+
+        before do
+          create(:cluster, cluster_type: :group_type, groups: [group], environment_scope: 'product/*')
+        end
+
+        context 'when identical environment scope exists in group' do
+          let(:cluster) { build(:cluster, cluster_type: :group_type, groups: [group], environment_scope: 'product/*') }
+
+          it { is_expected.to be_falsey }
+        end
+
+        context 'when identical environment scope does not exist in group' do
+          let(:cluster) { build(:cluster, cluster_type: :group_type, groups: [group], environment_scope: '*') }
+
+          it { is_expected.to be_truthy }
+        end
+
+        context 'when identical environment scope exists in different group' do
+          let(:cluster) { build(:cluster, :group, environment_scope: 'product/*') }
+
+          it { is_expected.to be_truthy }
+        end
+      end
+
+      context 'for an instance cluster' do
+        before do
+          create(:cluster, :instance, environment_scope: 'product/*')
+        end
+
+        context 'identical environment scope exists' do
+          let(:cluster) { build(:cluster, :instance, environment_scope: 'product/*') }
+
+          it { is_expected.to be_falsey }
+        end
+
+        context 'identical environment scope does not exist' do
+          let(:cluster) { build(:cluster, :instance, environment_scope: '*') }
+
+          it { is_expected.to be_truthy }
+        end
+      end
+    end
+
     context 'when validates name' do
       context 'when provided by user' do
         let!(:cluster) { build(:cluster, :provided_by_user, name: name) }