brew/Library/Homebrew/test/rubocops/resource_requires_dependencies_spec.rb

# frozen_string_literal: true

require "rubocops/resource_requires_dependencies"

RSpec.describe RuboCop::Cop::FormulaAudit::ResourceRequiresDependencies do
  subject(:cop) { described_class.new }

  context "when a formula does not have any resources" do
    it "does not report offenses" do
      expect_no_offenses(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          uses_from_macos "libxml2"
        end
      RUBY
    end
  end

  context "when a formula does not have the lxml resource" do
    it "does not report offenses" do
      expect_no_offenses(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          uses_from_macos "libxml2"

          resource "not-lxml" do
            url "blah"
            sha256 "blah"
          end
        end
      RUBY
    end
  end

  context "when a formula has the lxml resource" do
    it "does not report offenses if the dependencies are present" do
      expect_no_offenses(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          uses_from_macos "libxml2"
          uses_from_macos "libxslt"

          resource "lxml" do
            url "blah"
            sha256 "blah"
          end
        end
      RUBY
    end

    it "reports offenses if missing a dependency" do
      expect_offense(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          uses_from_macos "libsomethingelse"
          uses_from_macos "not_libxml2"

          resource "lxml" do
          ^^^^^^^^^^^^^^^ FormulaAudit/ResourceRequiresDependencies: Add `uses_from_macos` lines above for `"libxml2"` and `"libxslt"`.
            url "blah"
            sha256 "blah"
          end
        end
      RUBY
    end
  end

  context "when a formula does not have the pyyaml resource" do
    it "does not report offenses" do
      expect_no_offenses(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          uses_from_macos "libxml2"

          resource "not-pyyaml" do
            url "blah"
            sha256 "blah"
          end
        end
      RUBY
    end
  end

  context "when a formula has the pyyaml resource" do
    it "does not report offenses if the dependencies are present" do
      expect_no_offenses(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          depends_on "libyaml"

          resource "pyyaml" do
            url "blah"
            sha256 "blah"
          end
        end
      RUBY
    end

    it "reports offenses if missing a dependency" do
      expect_offense(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          depends_on "not_libyaml"

          resource "pyyaml" do
          ^^^^^^^^^^^^^^^^^ FormulaAudit/ResourceRequiresDependencies: Add `depends_on` lines above for `"libyaml"`.
            url "blah"
            sha256 "blah"
          end
        end
      RUBY
    end
  end

  context "when a formula has multiple resources" do
    it "reports offenses for each resource that is missing a dependency" do
      expect_offense(<<~RUBY)
        class Foo < Formula
          url "https://brew.sh/foo-1.0.tgz"
          homepage "https://brew.sh"

          uses_from_macos "one"
          uses_from_macos "two"
          depends_on "three"

          resource "lxml" do
          ^^^^^^^^^^^^^^^ FormulaAudit/ResourceRequiresDependencies: Add `uses_from_macos` lines above for `"libxml2"` and `"libxslt"`.
            url "blah"
            sha256 "blah"
          end

          resource "pyyaml" do
          ^^^^^^^^^^^^^^^^^ FormulaAudit/ResourceRequiresDependencies: Add `depends_on` lines above for `"libyaml"`.
            url "blah"
            sha256 "blah"
          end
        end
      RUBY
    end
  end
end