# frozen_string_literal: true

require 'spec_helper'

describe Clusters::ClustersHierarchy do
  describe '#base_and_ancestors' do
    def base_and_ancestors(clusterable)
      described_class.new(clusterable).base_and_ancestors
    end

    context 'project in nested group with clusters at every level' do
      let!(:cluster) { create(:cluster, :project, projects: [project]) }
      let!(:child) { create(:cluster, :group, groups: [child_group]) }
      let!(:parent) { create(:cluster, :group, groups: [parent_group]) }
      let!(:ancestor) { create(:cluster, :group, groups: [ancestor_group]) }

      let(:ancestor_group) { create(:group) }
      let(:parent_group) { create(:group, parent: ancestor_group) }
      let(:child_group) { create(:group, parent: parent_group) }
      let(:project) { create(:project, group: child_group) }

      it 'returns clusters for project' do
        expect(base_and_ancestors(project)).to eq([cluster, child, parent, ancestor])
      end

      it 'returns clusters for child_group' do
        expect(base_and_ancestors(child_group)).to eq([child, parent, ancestor])
      end

      it 'returns clusters for parent_group' do
        expect(base_and_ancestors(parent_group)).to eq([parent, ancestor])
      end

      it 'returns clusters for ancestor_group' do
        expect(base_and_ancestors(ancestor_group)).to eq([ancestor])
      end
    end

    context 'project in a namespace' do
      let!(:cluster) { create(:cluster, :project) }

      it 'returns clusters for project' do
        expect(base_and_ancestors(cluster.project)).to eq([cluster])
      end
    end

    context 'project in nested group with clusters at some levels' do
      let!(:child) { create(:cluster, :group, groups: [child_group]) }
      let!(:ancestor) { create(:cluster, :group, groups: [ancestor_group]) }

      let(:ancestor_group) { create(:group) }
      let(:parent_group) { create(:group, parent: ancestor_group) }
      let(:child_group) { create(:group, parent: parent_group) }
      let(:project) { create(:project, group: child_group) }

      it 'returns clusters for project' do
        expect(base_and_ancestors(project)).to eq([child, ancestor])
      end

      it 'returns clusters for child_group' do
        expect(base_and_ancestors(child_group)).to eq([child, ancestor])
      end

      it 'returns clusters for parent_group' do
        expect(base_and_ancestors(parent_group)).to eq([ancestor])
      end

      it 'returns clusters for ancestor_group' do
        expect(base_and_ancestors(ancestor_group)).to eq([ancestor])
      end
    end
  end
end