brew/Library/Homebrew/test/cmd/uses_spec.rb

# frozen_string_literal: true

require "cli/named_args"
require "cmd/shared_examples/args_parse"
require "cmd/uses"
require "fileutils"

RSpec.describe Homebrew::Cmd::Uses do
  include FileUtils

  it_behaves_like "parseable arguments"

  it "prints the Formulae a given Formula is used by", :integration_test, :no_api do
    # Included in output
    setup_test_formula "bar"
    setup_test_formula "optional", <<~RUBY
      url "https://brew.sh/optional-1.0"
      depends_on "bar" => :optional
    RUBY

    # Excluded from output
    setup_test_formula "foo"
    setup_test_formula "test", <<~RUBY
      url "https://brew.sh/test-1.0"
      depends_on "foo" => :test
    RUBY
    setup_test_formula "build", <<~RUBY
      url "https://brew.sh/build-1.0"
      depends_on "foo" => :build
    RUBY
    setup_test_formula "installed", <<~RUBY
      url "https://brew.sh/installed-1.0"
      depends_on "foo"
    RUBY

    # Mock `Formula#any_version_installed?` by creating the tab in a plausible keg directory
    %w[foo installed].each do |formula_name|
      keg_dir = HOMEBREW_CELLAR/formula_name/"1.0"
      keg_dir.mkpath
      touch keg_dir/AbstractTab::FILENAME
    end

    expect { brew "uses", "foo", "--eval-all", "--include-optional", "--missing", "--recursive" }
      .to output(/^(bar\noptional|optional\nbar)$/).to_stdout
      .and not_to_output.to_stderr
      .and be_a_success
  end

  it "handles unavailable formula", :integration_test, :no_api do
    setup_test_formula "foo"
    setup_test_formula "bar"
    setup_test_formula "optional", <<~RUBY
      url "https://brew.sh/optional-1.0"
      depends_on "bar" => :optional
    RUBY

    expect_any_instance_of(Homebrew::CLI::NamedArgs)
      .to receive(:to_formulae)
      .and_raise(FormulaUnavailableError, "foo")
    cmd = described_class.new(%w[foo --eval-all --include-optional --recursive])
    expect { cmd.run }
      .to output(/^(bar\noptional|optional\nbar)$/).to_stdout
      .and output(/Error: Missing formulae should not have dependents!\n/).to_stderr
      .and raise_error SystemExit
  end
end