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##
# Chapter 13 "Class and modules" ISO Test
assert('The undef statement', '13.3.7 a) 4)') do
# check that undef is undefining method
# based on the method name
def existing_method_a; true; end
def existing_method_b; true; end
def existing_method_c; true; end
def existing_method_d; true; end
def existing_method_e; true; end
def existing_method_f; true; end
# check that methods are defined
assert_true(existing_method_a, 'Method should be defined')
assert_true(existing_method_b, 'Method should be defined')
assert_true(existing_method_c, 'Method should be defined')
assert_true(existing_method_d, 'Method should be defined')
assert_true(existing_method_e, 'Method should be defined')
assert_true(existing_method_f, 'Method should be defined')
# undefine in all possible ways and check that method
# is undefined
undef existing_method_a
assert_raise(NoMethodError) do
existing_method_a
end
undef :existing_method_b
assert_raise(NoMethodError) do
existing_method_b
end
undef existing_method_c, existing_method_d
assert_raise(NoMethodError) do
existing_method_c
end
assert_raise(NoMethodError) do
existing_method_d
end
undef :existing_method_e, :existing_method_f
assert_raise(NoMethodError) do
existing_method_e
end
assert_raise(NoMethodError) do
existing_method_f
end
end
assert('The undef statement (method undefined)', '13.3.7 a) 5)') do
# check that undef is raising NameError if
# non-existing method should be undefined
assert_raise(NameError) do
undef non_existing_method
end
assert_raise(NameError) do
undef :non_existing_method
end
end
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