Test to ensure that falsy objects aren't wrapped by deprecation proxies
user
```ruby
require 'abstract_unit'
require 'active_support/deprecation'

class ProxyWrappersTest < Test::Unit::TestCase
  Waffles     = false
  NewWaffles  = :hamburgers
  
  def test_deprecated_object_proxy_doesnt_wrap_falsy_objects
    proxy = ActiveSupport::Deprecation::DeprecatedObjectProxy.new(nil, "message")
    assert !proxy
  end
  
  def test_deprecated_instance_variable_proxy_doesnt_wrap_falsy_objects
    proxy = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(nil, :waffles)
    assert !proxy
  end
  
  def test_deprecated_constant_proxy_doesnt_wrap_falsy_objects
    proxy = ActiveSupport::Deprecation::DeprecatedConstantProxy.new(Waffles, NewWaffles)
    assert !proxy
  end
end```
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