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# frozen_string_literal: true
require 'spec_helper'
describe GroupDescendant do
let(:parent) { create(:group) }
let(:subgroup) { create(:group, parent: parent) }
let(:subsub_group) { create(:group, parent: subgroup) }
def all_preloaded_groups(*groups)
groups + [parent, subgroup, subsub_group]
end
context 'for a group' do
describe '#hierarchy' do
it 'only queries once for the ancestors' do
# make sure the subsub_group does not have anything cached
test_group = create(:group, parent: subsub_group).reload
query_count = ActiveRecord::QueryRecorder.new { test_group.hierarchy }.count
expect(query_count).to eq(1)
end
it 'only queries once for the ancestors when a top is given' do
test_group = create(:group, parent: subsub_group).reload
recorder = ActiveRecord::QueryRecorder.new { test_group.hierarchy(subgroup) }
expect(recorder.count).to eq(1)
end
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(build_stubbed(:group)) }
.to raise_error('specified top is not part of the tree')
end
end
describe '.build_hierarchy' do
it 'combines hierarchies until the top' do
other_subgroup = create(:group, parent: parent)
other_subsub_group = create(:group, parent: subgroup)
groups = all_preloaded_groups(other_subgroup, subsub_group, other_subsub_group)
expected_hierarchy = { parent => [other_subgroup, { subgroup => [subsub_group, other_subsub_group] }] }
expect(described_class.build_hierarchy(groups)).to eq(expected_hierarchy)
end
it 'combines upto a given parent' do
other_subgroup = create(:group, parent: parent)
other_subsub_group = create(:group, parent: subgroup)
groups = [other_subgroup, subsub_group, other_subsub_group]
groups << subgroup # Add the parent as if it was preloaded
expected_hierarchy = [other_subgroup, { subgroup => [subsub_group, other_subsub_group] }]
expect(described_class.build_hierarchy(groups, parent)).to eq(expected_hierarchy)
end
it 'handles building a tree out of order' do
other_subgroup = create(:group, parent: parent)
other_subgroup2 = create(:group, parent: parent)
other_subsub_group = create(:group, parent: other_subgroup)
groups = all_preloaded_groups(subsub_group, other_subgroup2, other_subsub_group, other_subgroup)
expected_hierarchy = { parent => [{ subgroup => subsub_group }, other_subgroup2, { other_subgroup => other_subsub_group }] }
expect(described_class.build_hierarchy(groups)).to eq(expected_hierarchy)
end
it 'tracks the exception when a parent was not preloaded' do
expect(Gitlab::Sentry).to receive(:track_exception).and_call_original
expect { described_class.build_hierarchy([subsub_group]) }.to raise_error(ArgumentError)
end
it 'recovers if a parent was not reloaded by querying for the parent' do
expected_hierarchy = { parent => { subgroup => subsub_group } }
# this does not raise in production, so stubbing it here.
allow(Gitlab::Sentry).to receive(:track_exception)
expect(described_class.build_hierarchy([subsub_group])).to eq(expected_hierarchy)
end
it 'raises an error if not all elements were preloaded' do
expect { described_class.build_hierarchy([subsub_group]) }
.to raise_error(/was not preloaded/)
end
end
end
context 'for a project' do
let(:project) { create(:project, namespace: subsub_group) }
describe '#hierarchy' do
it 'builds a hierarchy for a project' 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
end
describe '.build_hierarchy' do
it 'combines hierarchies until the top' do
other_project = create(:project, namespace: parent)
other_subgroup_project = create(:project, namespace: subgroup)
elements = all_preloaded_groups(other_project, subsub_group, other_subgroup_project)
expected_hierarchy = { parent => [other_project, { subgroup => [subsub_group, other_subgroup_project] }] }
expect(described_class.build_hierarchy(elements)).to eq(expected_hierarchy)
end
it 'combines upto a given parent' do
other_project = create(:project, namespace: parent)
other_subgroup_project = create(:project, namespace: subgroup)
elements = [other_project, subsub_group, other_subgroup_project]
elements << subgroup # Added as if it was preloaded
expected_hierarchy = [other_project, { subgroup => [subsub_group, other_subgroup_project] }]
expect(described_class.build_hierarchy(elements, parent)).to eq(expected_hierarchy)
end
it 'merges to elements in the same hierarchy' do
expected_hierarchy = { parent => subgroup }
expect(described_class.build_hierarchy([parent, subgroup])).to eq(expected_hierarchy)
end
it 'merges complex hierarchies' do
project = create(:project, namespace: parent)
sub_project = create(:project, namespace: subgroup)
subsubsub_group = create(:group, parent: subsub_group)
subsub_project = create(:project, namespace: subsub_group)
subsubsub_project = create(:project, namespace: subsubsub_group)
other_subgroup = create(:group, parent: parent)
other_subproject = create(:project, namespace: other_subgroup)
elements = [project, subsubsub_project, sub_project, other_subproject, subsub_project]
# Add parent groups as if they were preloaded
elements += [other_subgroup, subsubsub_group, subsub_group, subgroup]
expected_hierarchy = [
project,
{
subgroup => [
{ subsub_group => [{ subsubsub_group => subsubsub_project }, subsub_project] },
sub_project
]
},
{ other_subgroup => other_subproject }
]
actual_hierarchy = described_class.build_hierarchy(elements, parent)
expect(actual_hierarchy).to eq(expected_hierarchy)
end
end
end
end
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