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require 'default_constructor'
include Default_constructor
# Ruby 1.6 raises NameError if you try to call Class.new where no constructor
# is defined; Ruby 1.7 changed this to NoMethodError
NoConstructorError = Kernel.const_defined?("NoMethodError") ? NoMethodError : NameError
# This should be no problem
a = A.new
# Nor should this
aa = AA.new
# The default constructor for B is private, so this should raise an exception
begin
b = B.new
rescue ArgumentError
# pass
end
# The two-argument constructor for B should work
b = B.new(3, 4)
# BB shouldn't inherit B's default constructor, so this should raise an exception
begin
bb = BB.new
puts "Whoa. new BB created."
rescue NoConstructorError
# pass
end
# C's constructor is protected, so this should raise an exception
begin
c = C.new
print "Whoa. new C created."
rescue NoConstructorError
# pass
end
# CC gets a default constructor, so no problem here
cc = CC.new
# D's constructor is private, so this should fail
begin
d = D.new
puts "Whoa. new D created"
rescue NoConstructorError
# pass
end
# DD shouldn't get a default constructor, so this should fail
begin
dd = DD.new
puts "Whoa. new DD created"
rescue NoConstructorError
# pass
end
# AD shouldn't get a default constructor, so this should fail
begin
ad = AD.new
puts "Whoa. new AD created"
rescue NoConstructorError
# pass
end
# Both of the arguments to E's constructor have default values,
# so this should be fine.
e = E.new
# EE should get a default constructor
ee = EE.new
# EB should not get a default constructor (because B doesn't have one)
begin
eb = EB.new
puts "Whoa. new EB created"
rescue NoConstructorError
# pass
end
# This should work fine
f = F.new
# This should work fine
ff = FFF.new
# This should work fine
g = G.new
# This should work fine
gg = GG.new
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