Contents

##
# Extra assertions for Test::Unit

module Test::Unit::Assertions

  ##
  # Asserts that +boolean+ is not false or nil.

  def deny(boolean, message = nil)
    _wrap_assertion do
      assert_block(build_message(message, "<?> is not false or nil.", boolean)) { not boolean }
    end
  end

  ##
  # Alias for assert_not_equal

  alias deny_equal assert_not_equal

  ##
  # Asserts that +obj+ responds to #empty? and #empty? returns true.

  def assert_empty(obj)
    assert_respond_to obj, :empty?
    assert_equal true, obj.empty?
  end

  ##
  # Asserts that +obj+ responds to #empty? and #empty? returns false.

  def deny_empty(obj)
    assert_respond_to obj, :empty?
    assert_equal false, obj.empty?
  end

  ##
  # Asserts that +obj+ responds to #include? and that obj includes +item+.

  def assert_includes(obj, item, message = nil)
    assert_respond_to obj, :include?
    assert_equal true, obj.include?(item), message
  end

  ##
  # Asserts that +obj+ responds to #include? and that obj does not include
  # +item+.

  def deny_includes(obj, item, message = nil)
    assert_respond_to obj, :include?
    assert_equal false, obj.include?(item), message
  end

  ##
  # Captures $stdout and $stderr to StringIO objects and returns them.
  # Restores $stdout and $stderr when done.
  #
  # Usage:
  #   def test_puts
  #     out, err = capture do
  #       puts 'hi'
  #       STDERR.puts 'bye!'
  #     end
  #     assert_equal "hi\n", out.string
  #     assert_equal "bye!\n", err.string
  #   end

  def util_capture
    require 'stringio'
    orig_stdout = $stdout.dup
    orig_stderr = $stderr.dup
    captured_stdout = StringIO.new
    captured_stderr = StringIO.new
    $stdout = captured_stdout
    $stderr = captured_stderr
    yield
    captured_stdout.rewind
    captured_stderr.rewind
    return captured_stdout, captured_stderr
  ensure
    $stdout = orig_stdout
    $stderr = orig_stderr
  end

end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
ZenTest-3.3.0	lib/test/zentest_assertions.rb
ZenTest-3.4.0	lib/test/zentest_assertions.rb