brew/Library/Homebrew/test/test_build_environment.rb

require 'testing_env'
require 'build_environment'

class BuildEnvironmentTests < Homebrew::TestCase
  def setup
    @env = BuildEnvironment.new
  end

  def test_shovel_returns_self
    assert_same @env, (@env << :foo)
  end

  def test_std?
    @env << :std
    assert_predicate @env, :std?
  end

  def test_userpaths?
    @env << :userpaths
    assert_predicate @env, :userpaths?
  end

  def test_modify_build_environment
    @env.proc = Proc.new { raise StandardError }
    assert_raises(StandardError) do
      @env.modify_build_environment(self)
    end
  end

  def test_marshal
    @env << :userpaths
    @env.proc = Proc.new {}
    assert_predicate Marshal.load(Marshal.dump(@env)), :userpaths?
  end

  def test_env_block
    error = Class.new(StandardError)
    @env.proc = Proc.new { raise error }
    assert_raises(error) { @env.modify_build_environment(self) }
  end

  def test_env_block_with_argument
    error = Class.new(StandardError)
    @env.proc = Proc.new { |x| raise x }
    assert_raises(error) { @env.modify_build_environment(error) }
  end
end

class BuildEnvironmentDSLTests < Homebrew::TestCase
  def make_instance(&block)
    Class.new do
      extend BuildEnvironmentDSL
      def env; self.class.env end
      class_eval(&block)
    end.new
  end

  def test_env_single_argument
    obj = make_instance { env :userpaths }
    assert_predicate obj.env, :userpaths?
  end

  def test_env_multiple_arguments
    obj = make_instance { env :userpaths, :std }
    assert_predicate obj.env, :userpaths?
    assert_predicate obj.env, :std?
  end
end