assert_kind_of(cls, obj, msg = nil)
Fails unless obj is a kind of cls.
# File lib/minitest/unit.rb, line 279 def assert_kind_of cls, obj, msg = nil # TODO: merge with instance_of msg = message(msg) { "Expected #{mu_pp(obj)} to be a kind of #{cls}, not #{obj.class}" } assert obj.kind_of?(cls), msg end