Test::Unit:
assert(boolean, message=nil)
assert_block(message="assert_block failed.") do ... end
assert_equal(expected, actual, message=nil)
assert_in_delta(expected_float, actual_float, delta, message="")
assert_instance_of(klass, object, message="")
assert_kind_of(klass, object, message="")
assert_match(pattern, string, message="")
assert_nil(object, message="")
assert_no_match(regexp, string, message="")
assert_not_equal(expected, actual, message="")
assert_not_nil(object, message="")
assert_not_same(expected, actual, message="")
assert_nothing_raised(*args)
assert_nothing_thrown(message="") do ... end
assert_operator(object1, operator, object2, message="")
assert_raises(expected_exception_klass, message="") do ... end
assert_respond_to(object, method, message="")
assert_same(expected, actual, message="")
assert_send(send_array, message="")
assert_throws(expected_symbol, message="") do ... end
flunk(message="Flunked")