# frozen_string_literal: true

require 'spec_helper'

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

  describe '#validate!' do
    it 'does not raise any error' do
      expect { subject.validate! }.not_to raise_error
    end

    context 'trying to delete the default branch' do
      let(:newrev) { '0000000000000000000000000000000000000000' }
      let(:ref) { 'refs/heads/master' }

      it 'raises an error' do
        expect { subject.validate! }.to raise_error(Gitlab::GitAccess::UnauthorizedError, 'The default branch of a project cannot be deleted.')
      end
    end

    context 'protected branches check' do
      before do
        allow(ProtectedBranch).to receive(:protected?).with(project, 'master').and_return(true)
        allow(ProtectedBranch).to receive(:protected?).with(project, 'feature').and_return(true)
      end

      it 'raises an error if the user is not allowed to do forced pushes to protected branches' do
        expect(Gitlab::Checks::ForcePush).to receive(:force_push?).and_return(true)

        expect { subject.validate! }.to raise_error(Gitlab::GitAccess::UnauthorizedError, 'You are not allowed to force push code to a protected branch on this project.')
      end

      it 'raises an error if the user is not allowed to merge to protected branches' do
        expect_any_instance_of(Gitlab::Checks::MatchingMergeRequest).to receive(:match?).and_return(true)
        expect(user_access).to receive(:can_merge_to_branch?).and_return(false)
        expect(user_access).to receive(:can_push_to_branch?).and_return(false)

        expect { subject.validate! }.to raise_error(Gitlab::GitAccess::UnauthorizedError, 'You are not allowed to merge code into protected branches on this project.')
      end

      it 'raises an error if the user is not allowed to push to protected branches' do
        expect(user_access).to receive(:can_push_to_branch?).and_return(false)

        expect { subject.validate! }.to raise_error(Gitlab::GitAccess::UnauthorizedError, 'You are not allowed to push code to protected branches on this project.')
      end

      context 'when project repository is empty' do
        let(:project) { create(:project) }

        it 'raises an error if the user is not allowed to push to protected branches' do
          expect(user_access).to receive(:can_push_to_branch?).and_return(false)

          expect { subject.validate! }.to raise_error(Gitlab::GitAccess::UnauthorizedError, /Ask a project Owner or Maintainer to create a default branch/)
        end
      end

      context 'branch deletion' do
        let(:newrev) { '0000000000000000000000000000000000000000' }
        let(:ref) { 'refs/heads/feature' }

        context 'if the user is not allowed to delete protected branches' do
          it 'raises an error' do
            expect { subject.validate! }.to raise_error(Gitlab::GitAccess::UnauthorizedError, 'You are not allowed to delete protected branches from this project. Only a project maintainer or owner can delete a protected branch.')
          end
        end

        context 'if the user is allowed to delete protected branches' do
          before do
            project.add_maintainer(user)
          end

          context 'through the web interface' do
            let(:protocol) { 'web' }

            it 'allows branch deletion' do
              expect { subject.validate! }.not_to raise_error
            end
          end

          context 'over SSH or HTTP' do
            it 'raises an error' do
              expect { subject.validate! }.to raise_error(Gitlab::GitAccess::UnauthorizedError, 'You can only delete protected branches using the web interface.')
            end
          end
        end
      end
    end
  end
end
