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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, $VERBOSE
end
def test_silence_stderr
old_stderr_position = STDERR.tell
silence_stderr { STDERR.puts 'hello world' }
assert_equal old_stderr_position, STDERR.tell
rescue Errno::ESPIPE
# Skip if we can't STDERR.tell
end
def test_silence_stderr_with_return_value
assert_equal 1, silence_stderr { 1 }
end
def test_singleton_class
o = Object.new
assert_equal class << o; self end, o.singleton_class
end
def test_class_eval
o = Object.new
class << o; @x = 1; end
assert_equal 1, o.class_eval { @x }
end
def test_capture
assert_equal 'STDERR', capture(:stderr) {$stderr.print 'STDERR'}
assert_equal 'STDOUT', capture(:stdout) {print 'STDOUT'}
end
end
class KernelSuppressTest < Test::Unit::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
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