# frozen_string_literal: true

require 'spec_helper'

describe Gitlab::Checks::DiffCheck do
  include_context 'change access checks context'

  describe '#validate!' do
    let(:owner) { create(:user) }
    let!(:lock) { create(:lfs_file_lock, user: owner, project: project, path: 'README') }

    before do
      allow(project.repository).to receive(:new_commits).and_return(
        project.repository.commits_between('be93687618e4b132087f430a4d8fc3a609c9b77c', '54fcc214b94e78d7a41a9a8fe6d87a5e59500e51')
      )
    end

    context 'with LFS not enabled' do
      before do
        allow(project).to receive(:lfs_enabled?).and_return(false)
      end

      it 'does not invoke :lfs_file_locks_validation' do
        expect(subject).not_to receive(:lfs_file_locks_validation)

        subject.validate!
      end
    end

    context 'with LFS enabled' do
      before do
        allow(project).to receive(:lfs_enabled?).and_return(true)
      end

      context 'when change is sent by a different user' do
        it 'raises an error if the user is not allowed to update the file' do
          expect { subject.validate! }.to raise_error(Gitlab::GitAccess::ForbiddenError, "The path 'README' is locked in Git LFS by #{lock.user.name}")
        end
      end

      context 'when change is sent by the author of the lock' do
        let(:user) { owner }

        it "doesn't raise any error" do
          expect { subject.validate! }.not_to raise_error
        end
      end
    end

    context 'commit diff validations' do
      before do
        allow(subject).to receive(:validations_for_diff).and_return([lambda { |diff| return }])

        expect_any_instance_of(Commit).to receive(:raw_deltas).and_call_original

        subject.validate!
      end

      context 'when request store is inactive' do
        it 'are run for every commit' do
          expect_any_instance_of(Commit).to receive(:raw_deltas).and_call_original

          subject.validate!
        end
      end

      context 'when request store is active', :request_store do
        it 'are cached for every commit' do
          expect_any_instance_of(Commit).not_to receive(:raw_deltas)

          subject.validate!
        end

        it 'are run for not cached commits' do
          allow(project.repository).to receive(:new_commits).and_return(
            project.repository.commits_between('be93687618e4b132087f430a4d8fc3a609c9b77c', 'a5391128b0ef5d21df5dd23d98557f4ef12fae20')
          )
          change_access.instance_variable_set(:@commits, project.repository.new_commits)

          expect(project.repository.new_commits.first).not_to receive(:raw_deltas).and_call_original
          expect(project.repository.new_commits.last).to receive(:raw_deltas).and_call_original

          subject.validate!
        end
      end
    end
  end
end