require 'spec_helper'

describe Commit, models: true do
  let(:project) { create(:project) }
  let(:commit)  { project.commit }

  describe 'modules' do
    subject { described_class }

    it { is_expected.to include_module(Mentionable) }
    it { is_expected.to include_module(Participable) }
    it { is_expected.to include_module(Referable) }
    it { is_expected.to include_module(StaticModel) }
  end

  describe '#to_reference' do
    it 'returns a String reference to the object' do
      expect(commit.to_reference).to eq commit.id
    end

    it 'supports a cross-project reference' do
      cross = double('project')
      expect(commit.to_reference(cross)).to eq "#{project.to_reference}@#{commit.id}"
    end
  end

  describe '#reference_link_text' do
    it 'returns a String reference to the object' do
      expect(commit.reference_link_text).to eq commit.short_id
    end

    it 'supports a cross-project reference' do
      cross = double('project')
      expect(commit.reference_link_text(cross)).to eq "#{project.to_reference}@#{commit.short_id}"
    end
  end

  describe '#title' do
    it "returns no_commit_message when safe_message is blank" do
      allow(commit).to receive(:safe_message).and_return('')
      expect(commit.title).to eq("--no commit message")
    end

    it "truncates a message without a newline at 80 characters" do
      message = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sodales id felis id blandit. Vivamus egestas lacinia lacus, sed rutrum mauris.'

      allow(commit).to receive(:safe_message).and_return(message)
      expect(commit.title).to eq("#{message[0..79]}…")
    end

    it "truncates a message with a newline before 80 characters at the newline" do
      message = commit.safe_message.split(" ").first

      allow(commit).to receive(:safe_message).and_return(message + "\n" + message)
      expect(commit.title).to eq(message)
    end

    it "does not truncates a message with a newline after 80 but less 100 characters" do
      message =<<eos
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sodales id felis id blandit.
Vivamus egestas lacinia lacus, sed rutrum mauris.
eos

      allow(commit).to receive(:safe_message).and_return(message)
      expect(commit.title).to eq(message.split("\n").first)
    end
  end

  describe "delegation" do
    subject { commit }

    it { is_expected.to respond_to(:message) }
    it { is_expected.to respond_to(:authored_date) }
    it { is_expected.to respond_to(:committed_date) }
    it { is_expected.to respond_to(:committer_email) }
    it { is_expected.to respond_to(:author_email) }
    it { is_expected.to respond_to(:parents) }
    it { is_expected.to respond_to(:date) }
    it { is_expected.to respond_to(:diffs) }
    it { is_expected.to respond_to(:tree) }
    it { is_expected.to respond_to(:id) }
    it { is_expected.to respond_to(:to_patch) }
  end

  describe '#closes_issues' do
    let(:issue) { create :issue, project: project }
    let(:other_project) { create :project, :public }
    let(:other_issue) { create :issue, project: other_project }

    it 'detects issues that this commit is marked as closing' do
      ext_ref = "#{other_project.path_with_namespace}##{other_issue.iid}"
      allow(commit).to receive(:safe_message).and_return("Fixes ##{issue.iid} and #{ext_ref}")
      expect(commit.closes_issues).to include(issue)
      expect(commit.closes_issues).to include(other_issue)
    end
  end

  it_behaves_like 'a mentionable' do
    subject { create(:project).commit }

    let(:author) { create(:user, email: subject.author_email) }
    let(:backref_text) { "commit #{subject.id}" }
    let(:set_mentionable_text) do
      ->(txt) { allow(subject).to receive(:safe_message).and_return(txt) }
    end

    # Include the subject in the repository stub.
    let(:extra_commits) { [subject] }
  end

  describe '#hook_attrs' do
    let(:data) { commit.hook_attrs(with_changed_files: true) }

    it { expect(data).to be_a(Hash) }
    it { expect(data[:message]).to include('Add submodule from gitlab.com') }
    it { expect(data[:timestamp]).to eq('2014-02-27T11:01:38+02:00') }
    it { expect(data[:added]).to eq(["gitlab-grack"]) }
    it { expect(data[:modified]).to eq([".gitmodules"]) }
    it { expect(data[:removed]).to eq([]) }
  end

  describe '#reverts_commit?' do
    let(:another_commit) { double(:commit, revert_description: "This reverts commit #{commit.sha}") }

    it { expect(commit.reverts_commit?(another_commit)).to be_falsy }

    context 'commit has no description' do
      before { allow(commit).to receive(:description?).and_return(false) }

      it { expect(commit.reverts_commit?(another_commit)).to be_falsy }
    end

    context "another_commit's description does not revert commit" do
      before { allow(commit).to receive(:description).and_return("Foo Bar") }

      it { expect(commit.reverts_commit?(another_commit)).to be_falsy }
    end

    context "another_commit's description reverts commit" do
      before { allow(commit).to receive(:description).and_return("Foo #{another_commit.revert_description} Bar") }

      it { expect(commit.reverts_commit?(another_commit)).to be_truthy }
    end

    context "another_commit's description reverts merged merge request" do
      before do
        revert_description = "This reverts merge request !foo123"
        allow(another_commit).to receive(:revert_description).and_return(revert_description)
        allow(commit).to receive(:description).and_return("Foo #{another_commit.revert_description} Bar")
      end

      it { expect(commit.reverts_commit?(another_commit)).to be_truthy }
    end
  end
end
