Method: Minitest::Assertions#assert_instance_of

Defined in:
lib/minitest/assertions.rb

#assert_instance_of(cls, obj, msg = nil) ⇒ Object

Fails unless obj is an instance of cls.



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# File 'lib/minitest/assertions.rb', line 265

def assert_instance_of cls, obj, msg = nil
  msg = message(msg) {
    "Expected #{mu_pp obj} to be an instance of #{cls}, not #{obj.class}"
  }

  assert obj.instance_of?(cls), msg
end