Add a concern to build hierarchies of groups

1 files changed, 61 insertions, 0 deletions

diff --git a/spec/models/concerns/group_hierarchy_spec.rb b/spec/models/concerns/group_hierarchy_spec.rb
new file mode 100644
index 00000000000..14ac910c90d
--- /dev/null
+++ b/spec/models/concerns/group_hierarchy_spec.rb
@@ -0,0 +1,61 @@
+require 'spec_helper'
+
+describe GroupHierarchy, :nested_groups do
+  let(:parent) { create(:group) }
+  let(:subgroup) { create(:group, parent: parent) }
+  let(:subsub_group) { create(:group, parent: subgroup) }
+
+  context 'for a group' do
+    describe '#hierarchy' do
+      it 'builds a hierarchy for a group' do
+        expected_hierarchy = { parent => { subgroup => subsub_group } }
+
+        expect(subsub_group.hierarchy).to eq(expected_hierarchy)
+      end
+
+      it 'builds a hierarchy upto a specified parent' do
+        expected_hierarchy = { subgroup => subsub_group }
+
+        expect(subsub_group.hierarchy(parent)).to eq(expected_hierarchy)
+      end
+
+      it 'raises an error if specifying a base that is not part of the tree' do
+        expect { subsub_group.hierarchy(double) }.to raise_error('specified base is not part of the tree')
+      end
+    end
+
+    describe '#parent' do
+      it 'returns the correct parent' do
+        expect(subsub_group.parent).to eq(subgroup)
+      end
+    end
+  end
+
+  context 'for a project' do
+    let(:project) { create(:project, namespace: subsub_group) }
+
+    describe '#hierarchy' do
+      it 'builds a hierarchy for a group' do
+        expected_hierarchy = { parent => { subgroup => { subsub_group => project } } }
+
+        expect(project.hierarchy).to eq(expected_hierarchy)
+      end
+
+      it 'builds a hierarchy upto a specified parent' do
+        expected_hierarchy = { subsub_group => project }
+
+        expect(project.hierarchy(subgroup)).to eq(expected_hierarchy)
+      end
+
+      it 'raises an error if specifying a base that is not part of the tree' do
+        expect { project.hierarchy(double) }.to raise_error('specified base is not part of the tree')
+      end
+    end
+
+    describe '#parent' do
+      it 'returns the correct parent' do
+        expect(project.parent).to eq(subsub_group)
+      end
+    end
+  end
+end