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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Network::Graph, feature_category: :source_code_management do
let(:project) { create(:project, :repository) }
describe '#initialize' do
let(:graph) do
described_class.new(project, 'refs/heads/master', project.repository.commit, nil)
end
it 'has initialized' do
expect(graph).to be_a(described_class)
end
end
describe '#commits' do
let(:graph) { described_class.new(project, 'refs/heads/master', project.repository.commit, nil) }
it 'returns a list of commits' do
commits = graph.commits
expect(commits).not_to be_empty
expect(commits).to all(be_kind_of(Network::Commit))
end
it 'only fetches the commits once', :request_store do
expect(Gitlab::Git::Commit).to receive(:find_all).once.and_call_original
graph
end
it 'sorts commits by commit date (descending)' do
# Remove duplicate timestamps because they make it harder to
# assert that the commits are sorted as expected.
commits = graph.commits.uniq(&:date)
sorted_commits = commits.sort_by(&:date).reverse
expect(commits).not_to be_empty
expect(commits.map(&:id)).to eq(sorted_commits.map(&:id))
end
it 'sorts children before parents for commits with the same timestamp' do
commits_by_time = graph.commits.group_by(&:date)
commits_by_time.each do |time, commits|
commit_ids = commits.map(&:id)
commits.each_with_index do |commit, index|
parent_indexes = commit.parent_ids.map { |parent_id| commit_ids.find_index(parent_id) }.compact
# All parents of the current commit should appear after it
expect(parent_indexes).to all(be > index)
end
end
end
end
end
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