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##
# NilClass ISO Test
assert('NilClass', '15.2.4') do
NilClass.class == Class
end
assert('NilClass#&', '15.2.4.3.1') do
not nil.&(true) and not nil.&(nil)
end
assert('NilClass#^', '15.2.4.3.2') do
nil.^(true) and not nil.^(false)
end
assert('NilClass#|', '15.2.4.3.3') do
nil.|(true) and not nil.|(false)
end
assert('NilClass#nil?', '15.2.4.3.4') do
nil.nil?
end
assert('NilClass#to_s', '15.2.4.3.5') do
nil.to_s == ''
end
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