require 'abstract_unit' require 'active_support/core_ext/kernel' class KernelTest < Test::Unit::TestCase def test_silence_warnings silence_warnings { assert_nil $VERBOSE } assert_equal 1234, silence_warnings { 1234 } end def test_silence_warnings_verbose_invariant old_verbose = $VERBOSE silence_warnings { raise } flunk rescue assert_equal old_verbose, $VERBOSE end def test_enable_warnings enable_warnings { assert_equal true, $VERBOSE } assert_equal 1234, enable_warnings { 1234 } end def test_enable_warnings_verbose_invariant old_verbose = $VERBOSE enable_warnings { raise } flunk rescue assert_equal old_verbose, $VERBOSE end def test_silence_stderr old_stderr_position = STDERR.tell silence_stderr { STDERR.puts 'hello world' } assert_equal old_stderr_position, STDERR.tell rescue Errno::ESPIPE # Skip if we can't STDERR.tell end def test_silence_stderr_with_return_value assert_equal 1, silence_stderr { 1 } end def test_singleton_class o = Object.new assert_equal class << o; self end, o.singleton_class end def test_class_eval o = Object.new class << o; @x = 1; end assert_equal 1, o.class_eval { @x } end end class KernelSupressTest < Test::Unit::TestCase def test_reraise assert_raise(LoadError) do suppress(ArgumentError) { raise LoadError } end end def test_supression suppress(ArgumentError) { raise ArgumentError } suppress(LoadError) { raise LoadError } suppress(LoadError, ArgumentError) { raise LoadError } suppress(LoadError, ArgumentError) { raise ArgumentError } end end