require 'spec_helper'

describe SnippetsFinder do
  include Gitlab::Allowable
  using RSpec::Parameterized::TableSyntax

  describe '#initialize' do
    it 'raises ArgumentError when a project and author are given' do
      user = build(:user)
      project = build(:project)

      expect { described_class.new(user, author: user, project: project) }
        .to raise_error(ArgumentError)
    end
  end

  context 'filter by scope' do
    let(:user) { create :user }
    let!(:snippet1) { create(:personal_snippet, :private, author: user) }
    let!(:snippet2) { create(:personal_snippet, :internal, author: user) }
    let!(:snippet3) { create(:personal_snippet, :public, author: user) }

    it "returns all snippets for 'all' scope" do
      snippets = described_class.new(user, scope: :all).execute

      expect(snippets).to include(snippet1, snippet2, snippet3)
    end

    it "returns all snippets for 'are_private' scope" do
      snippets = described_class.new(user, scope: :are_private).execute

      expect(snippets).to include(snippet1)
      expect(snippets).not_to include(snippet2, snippet3)
    end

    it "returns all snippets for 'are_internal' scope" do
      snippets = described_class.new(user, scope: :are_internal).execute

      expect(snippets).to include(snippet2)
      expect(snippets).not_to include(snippet1, snippet3)
    end

    it "returns all snippets for 'are_private' scope" do
      snippets = described_class.new(user, scope: :are_public).execute

      expect(snippets).to include(snippet3)
      expect(snippets).not_to include(snippet1, snippet2)
    end
  end

  context 'filter by author' do
    let(:user) { create :user }
    let(:user1) { create :user }
    let!(:snippet1) { create(:personal_snippet, :private, author: user) }
    let!(:snippet2) { create(:personal_snippet, :internal, author: user) }
    let!(:snippet3) { create(:personal_snippet, :public, author: user) }

    it "returns all public and internal snippets" do
      snippets = described_class.new(user1, author: user).execute

      expect(snippets).to include(snippet2, snippet3)
      expect(snippets).not_to include(snippet1)
    end

    it "returns internal snippets" do
      snippets = described_class.new(user, author: user, scope: :are_internal).execute

      expect(snippets).to include(snippet2)
      expect(snippets).not_to include(snippet1, snippet3)
    end

    it "returns private snippets" do
      snippets = described_class.new(user, author: user, scope: :are_private).execute

      expect(snippets).to include(snippet1)
      expect(snippets).not_to include(snippet2, snippet3)
    end

    it "returns public snippets" do
      snippets = described_class.new(user, author: user, scope: :are_public).execute

      expect(snippets).to include(snippet3)
      expect(snippets).not_to include(snippet1, snippet2)
    end

    it "returns all snippets" do
      snippets = described_class.new(user, author: user).execute

      expect(snippets).to include(snippet1, snippet2, snippet3)
    end

    it "returns only public snippets if unauthenticated user" do
      snippets = described_class.new(nil, author: user).execute

      expect(snippets).to include(snippet3)
      expect(snippets).not_to include(snippet2, snippet1)
    end

    it 'returns all snippets for an admin' do
      admin = create(:user, :admin)
      snippets = described_class.new(admin, author: user).execute

      expect(snippets).to include(snippet1, snippet2, snippet3)
    end
  end

  context 'filter by project' do
    let(:user) { create :user }
    let(:group) { create :group, :public }
    let(:project1) { create(:project, :public,  group: group) }

    before do
      @snippet1 = create(:project_snippet, :private,  project: project1)
      @snippet2 = create(:project_snippet, :internal, project: project1)
      @snippet3 = create(:project_snippet, :public,   project: project1)
    end

    it "returns public snippets for unauthorized user" do
      snippets = described_class.new(nil, project: project1).execute

      expect(snippets).to include(@snippet3)
      expect(snippets).not_to include(@snippet1, @snippet2)
    end

    it "returns public and internal snippets for non project members" do
      snippets = described_class.new(user, project: project1).execute

      expect(snippets).to include(@snippet2, @snippet3)
      expect(snippets).not_to include(@snippet1)
    end

    it "returns public snippets for non project members" do
      snippets = described_class.new(user, project: project1, scope: :are_public).execute

      expect(snippets).to include(@snippet3)
      expect(snippets).not_to include(@snippet1, @snippet2)
    end

    it "returns internal snippets for non project members" do
      snippets = described_class.new(user, project: project1, scope: :are_internal).execute

      expect(snippets).to include(@snippet2)
      expect(snippets).not_to include(@snippet1, @snippet3)
    end

    it "does not return private snippets for non project members" do
      snippets = described_class.new(user, project: project1, scope: :are_private).execute

      expect(snippets).not_to include(@snippet1, @snippet2, @snippet3)
    end

    it "returns all snippets for project members" do
      project1.add_developer(user)

      snippets = described_class.new(user, project: project1).execute

      expect(snippets).to include(@snippet1, @snippet2, @snippet3)
    end

    it "returns private snippets for project members" do
      project1.add_developer(user)

      snippets = described_class.new(user, project: project1, scope: :are_private).execute

      expect(snippets).to include(@snippet1)
    end

    it 'returns all snippets for an admin' do
      admin = create(:user, :admin)
      snippets = described_class.new(admin, project: project1).execute

      expect(snippets).to include(@snippet1, @snippet2, @snippet3)
    end
  end

  describe '#execute' do
    let(:project) { create(:project, :public) }
    let!(:project_snippet) { create(:project_snippet, :public, project: project) }
    let!(:personal_snippet) { create(:personal_snippet, :public) }
    let(:user) { create(:user) }
    subject(:finder) { described_class.new(user) }

    it 'returns project- and personal snippets' do
      expect(finder.execute).to contain_exactly(project_snippet, personal_snippet)
    end

    context 'when the user cannot read cross project' do
      before do
        allow(Ability).to receive(:allowed?).and_call_original
        allow(Ability).to receive(:allowed?).with(user, :read_cross_project) { false }
      end

      it 'returns only personal snippets when the user cannot read cross project' do
        expect(finder.execute).to contain_exactly(personal_snippet)
      end
    end
  end

  it_behaves_like 'snippet visibility'
end