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path: root/spec/models/protected_branch_spec.rb
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# frozen_string_literal: true

require 'spec_helper'

describe ProtectedBranch do
  subject { build_stubbed(:protected_branch) }

  describe 'Associations' do
    it { is_expected.to belong_to(:project) }
  end

  describe 'Validation' do
    it { is_expected.to validate_presence_of(:project) }
    it { is_expected.to validate_presence_of(:name) }
  end

  describe "#matches?" do
    context "when the protected branch setting is not a wildcard" do
      let(:protected_branch) { build(:protected_branch, name: "production/some-branch") }

      it "returns true for branch names that are an exact match" do
        expect(protected_branch.matches?("production/some-branch")).to be true
      end

      it "returns false for branch names that are not an exact match" do
        expect(protected_branch.matches?("staging/some-branch")).to be false
      end
    end

    context "when the protected branch name contains wildcard(s)" do
      context "when there is a single '*'" do
        let(:protected_branch) { build(:protected_branch, name: "production/*") }

        it "returns true for branch names matching the wildcard" do
          expect(protected_branch.matches?("production/some-branch")).to be true
          expect(protected_branch.matches?("production/")).to be true
        end

        it "returns false for branch names not matching the wildcard" do
          expect(protected_branch.matches?("staging/some-branch")).to be false
          expect(protected_branch.matches?("production")).to be false
        end
      end

      context "when the wildcard contains regex symbols other than a '*'" do
        let(:protected_branch) { build(:protected_branch, name: "pro.duc.tion/*") }

        it "returns true for branch names matching the wildcard" do
          expect(protected_branch.matches?("pro.duc.tion/some-branch")).to be true
        end

        it "returns false for branch names not matching the wildcard" do
          expect(protected_branch.matches?("production/some-branch")).to be false
          expect(protected_branch.matches?("proXducYtion/some-branch")).to be false
        end
      end

      context "when there are '*'s at either end" do
        let(:protected_branch) { build(:protected_branch, name: "*/production/*") }

        it "returns true for branch names matching the wildcard" do
          expect(protected_branch.matches?("gitlab/production/some-branch")).to be true
          expect(protected_branch.matches?("/production/some-branch")).to be true
          expect(protected_branch.matches?("gitlab/production/")).to be true
          expect(protected_branch.matches?("/production/")).to be true
        end

        it "returns false for branch names not matching the wildcard" do
          expect(protected_branch.matches?("gitlabproductionsome-branch")).to be false
          expect(protected_branch.matches?("production/some-branch")).to be false
          expect(protected_branch.matches?("gitlab/production")).to be false
          expect(protected_branch.matches?("production")).to be false
        end
      end

      context "when there are arbitrarily placed '*'s" do
        let(:protected_branch) { build(:protected_branch, name: "pro*duction/*/gitlab/*") }

        it "returns true for branch names matching the wildcard" do
          expect(protected_branch.matches?("production/some-branch/gitlab/second-branch")).to be true
          expect(protected_branch.matches?("proXYZduction/some-branch/gitlab/second-branch")).to be true
          expect(protected_branch.matches?("proXYZduction/gitlab/gitlab/gitlab")).to be true
          expect(protected_branch.matches?("proXYZduction//gitlab/")).to be true
          expect(protected_branch.matches?("proXYZduction/some-branch/gitlab/")).to be true
          expect(protected_branch.matches?("proXYZduction//gitlab/some-branch")).to be true
        end

        it "returns false for branch names not matching the wildcard" do
          expect(protected_branch.matches?("production/some-branch/not-gitlab/second-branch")).to be false
          expect(protected_branch.matches?("prodXYZuction/some-branch/gitlab/second-branch")).to be false
          expect(protected_branch.matches?("proXYZduction/gitlab/some-branch/gitlab")).to be false
          expect(protected_branch.matches?("proXYZduction/gitlab//")).to be false
          expect(protected_branch.matches?("proXYZduction/gitlab/")).to be false
          expect(protected_branch.matches?("proXYZduction//some-branch/gitlab")).to be false
        end
      end
    end
  end

  describe "#matching" do
    context "for direct matches" do
      it "returns a list of protected branches matching the given branch name" do
        production = create(:protected_branch, name: "production")
        staging = create(:protected_branch, name: "staging")

        expect(described_class.matching("production")).to include(production)
        expect(described_class.matching("production")).not_to include(staging)
      end

      it "accepts a list of protected branches to search from, so as to avoid a DB call" do
        production = build(:protected_branch, name: "production")
        staging = build(:protected_branch, name: "staging")

        expect(described_class.matching("production")).to be_empty
        expect(described_class.matching("production", protected_refs: [production, staging])).to include(production)
        expect(described_class.matching("production", protected_refs: [production, staging])).not_to include(staging)
      end
    end

    context "for wildcard matches" do
      it "returns a list of protected branches matching the given branch name" do
        production = create(:protected_branch, name: "production/*")
        staging = create(:protected_branch, name: "staging/*")

        expect(described_class.matching("production/some-branch")).to include(production)
        expect(described_class.matching("production/some-branch")).not_to include(staging)
      end

      it "accepts a list of protected branches to search from, so as to avoid a DB call" do
        production = build(:protected_branch, name: "production/*")
        staging = build(:protected_branch, name: "staging/*")

        expect(described_class.matching("production/some-branch")).to be_empty
        expect(described_class.matching("production/some-branch", protected_refs: [production, staging])).to include(production)
        expect(described_class.matching("production/some-branch", protected_refs: [production, staging])).not_to include(staging)
      end
    end
  end

  describe '#protected?' do
    context 'existing project' do
      let(:project) { create(:project, :repository) }

      it 'returns true when the branch matches a protected branch via direct match' do
        create(:protected_branch, project: project, name: "foo")

        expect(described_class.protected?(project, 'foo')).to eq(true)
      end

      it 'returns true when the branch matches a protected branch via wildcard match' do
        create(:protected_branch, project: project, name: "production/*")

        expect(described_class.protected?(project, 'production/some-branch')).to eq(true)
      end

      it 'returns false when the branch does not match a protected branch via direct match' do
        expect(described_class.protected?(project, 'foo')).to eq(false)
      end

      it 'returns false when the branch does not match a protected branch via wildcard match' do
        create(:protected_branch, project: project, name: "production/*")

        expect(described_class.protected?(project, 'staging/some-branch')).to eq(false)
      end
    end

    context 'new project' do
      using RSpec::Parameterized::TableSyntax

      let(:project) { create(:project) }

      context 'when the group has set their own default_branch_protection level' do
        where(:default_branch_protection_level, :result) do
          Gitlab::Access::PROTECTION_NONE          | false
          Gitlab::Access::PROTECTION_DEV_CAN_PUSH  | false
          Gitlab::Access::PROTECTION_DEV_CAN_MERGE | true
          Gitlab::Access::PROTECTION_FULL          | true
        end

        with_them do
          it 'protects the default branch based on the default branch protection setting of the group' do
            expect(project.namespace).to receive(:default_branch_protection).and_return(default_branch_protection_level)

            expect(described_class.protected?(project, 'master')).to eq(result)
          end
        end
      end

      context 'when the group has not set their own default_branch_protection level' do
        where(:default_branch_protection_level, :result) do
          Gitlab::Access::PROTECTION_NONE          | false
          Gitlab::Access::PROTECTION_DEV_CAN_PUSH  | false
          Gitlab::Access::PROTECTION_DEV_CAN_MERGE | true
          Gitlab::Access::PROTECTION_FULL          | true
        end

        with_them do
          before do
            stub_application_setting(default_branch_protection: default_branch_protection_level)
          end

          it 'protects the default branch based on the instance level default branch protection setting' do
            expect(described_class.protected?(project, 'master')).to eq(result)
          end
        end
      end
    end
  end

  describe '#any_protected?' do
    context 'existing project' do
      let(:project) { create(:project, :repository) }

      it 'returns true when any of the branch names match a protected branch via direct match' do
        create(:protected_branch, project: project, name: 'foo')

        expect(described_class.any_protected?(project, ['foo', 'production/some-branch'])).to eq(true)
      end

      it 'returns true when any of the branch matches a protected branch via wildcard match' do
        create(:protected_branch, project: project, name: 'production/*')

        expect(described_class.any_protected?(project, ['foo', 'production/some-branch'])).to eq(true)
      end

      it 'returns false when none of branches does not match a protected branch via direct match' do
        expect(described_class.any_protected?(project, ['foo'])).to eq(false)
      end

      it 'returns false when none of the branches does not match a protected branch via wildcard match' do
        create(:protected_branch, project: project, name: 'production/*')

        expect(described_class.any_protected?(project, ['staging/some-branch'])).to eq(false)
      end
    end
  end

  describe '.by_name' do
    let!(:protected_branch) { create(:protected_branch, name: 'master') }
    let!(:another_protected_branch) { create(:protected_branch, name: 'stable') }

    it 'returns protected branches with a matching name' do
      expect(described_class.by_name(protected_branch.name))
        .to eq([protected_branch])
    end

    it 'returns protected branches with a partially matching name' do
      expect(described_class.by_name(protected_branch.name[0..2]))
        .to eq([protected_branch])
    end

    it 'returns protected branches with a matching name regardless of the casing' do
      expect(described_class.by_name(protected_branch.name.upcase))
        .to eq([protected_branch])
    end

    it 'returns nothing when nothing matches' do
      expect(described_class.by_name('unknown')).to be_empty
    end

    it 'return nothing when query is blank' do
      expect(described_class.by_name('')).to be_empty
    end
  end
end