brew/Library/Homebrew/test/test_requirement.rb

require 'testing_env'
require 'dependencies'

class RequirementTests < Test::Unit::TestCase
  def test_accepts_single_tag
    dep = Requirement.new("bar")
    assert_equal %w{bar}, dep.tags
  end

  def test_accepts_multiple_tags
    dep = Requirement.new(%w{bar baz})
    assert_equal %w{bar baz}.sort, dep.tags.sort
    dep = Requirement.new(*%w{bar baz})
    assert_equal %w{bar baz}.sort, dep.tags.sort
  end

  def test_preserves_symbol_tags
    dep = Requirement.new(:build)
    assert_equal [:build], dep.tags
  end

  def test_accepts_symbol_and_string_tags
    dep = Requirement.new([:build, "bar"])
    assert_equal [:build, "bar"], dep.tags
    dep = Requirement.new(:build, "bar")
    assert_equal [:build, "bar"], dep.tags
  end

  def test_dsl_fatal
    req = Class.new(Requirement) { fatal true }.new
    assert req.fatal?
  end

  def test_satisfy_true
    req = Class.new(Requirement) do
      satisfy(:build_env => false) { true }
    end.new
    assert req.satisfied?
  end

  def test_satisfy_false
    req = Class.new(Requirement) do
      satisfy(:build_env => false) { false }
    end.new
    assert !req.satisfied?
  end

  def test_satisfy_with_userpaths_from_env
    ENV.expects(:with_build_environment).yields.returns(true)
    ENV.expects(:userpaths!)
    req = Class.new(Requirement) do
      env :userpaths
      satisfy(:build_env => true) { true }
    end.new
    assert req.satisfied?
  end

  def test_satisfy_with_userpaths_from_options
    ENV.expects(:with_build_environment).yields.returns(true)
    ENV.expects(:userpaths!)
    req = Class.new(Requirement) do
      satisfy(:build_env => true, :userpaths => true) { true }
    end.new
    assert req.satisfied?
  end

  def test_satisfy_with_boolean
    req = Class.new(Requirement) do
      satisfy true
    end.new
    assert req.satisfied?
  end
end