require "abstract_unit" require "active_support/core_ext/kernel" class KernelTest < ActiveSupport::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_class_eval o = Object.new class << o; @x = 1; end assert_equal 1, o.class_eval { @x } end end class KernelSuppressTest < ActiveSupport::TestCase def test_reraise assert_raise(LoadError) do suppress(ArgumentError) { raise LoadError } end end def test_suppression suppress(ArgumentError) { raise ArgumentError } suppress(LoadError) { raise LoadError } suppress(LoadError, ArgumentError) { raise LoadError } suppress(LoadError, ArgumentError) { raise ArgumentError } end end class MockStdErr attr_reader :output def puts(message) @output ||= [] @output << message end def info(message) puts(message) end def write(message) puts(message) end end