rubyspec (owner)

Revisions

  • 331a0a Thu Dec 18 16:00:33 -0800 2008
  • a67fb8 Thu Dec 18 15:53:11 -0800 2008
  • fffd1e Thu Dec 18 14:59:03 -0800 2008
  • d48dc4 Thu Dec 18 12:18:11 -0800 2008
gist: 37636 Download_button fork
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puts "1. Getting or checking a constant"
 
puts "  a. Simple class"
 
class A
  X = 1
 
  def self.c; X; end
  def c; X; end
end
 
p A.c == 1
p A.const_defined?(:X)
p A.const_get(:X) == 1
p A.new.c == 1
 
puts "  b. Subclass does not override"
 
class B < A
end
 
p B.c == 1
p B.const_defined?(:X) == false
p B.const_get(:X) == 1
p B.new.c == 1
 
class C < A
  def self.c; X; end
  def c; X; end
end
 
p C.c == 1
p C.const_defined?(:X) == false
p C.const_get(:X) == 1
p C.new.c == 1
 
puts "  c. Subclass does override"
 
class D < A
  X = 2
end
 
p D.c == 1
p D.const_defined?(:X)
p D.const_get(:X) == 2
p D.new.c == 1
 
class E < A
  X = 3
 
  def self.c; X; end
  def c; X; end
end
 
p E.c == 3
p E.const_defined?(:X)
p E.const_get(:X) == 3
p E.new.c == 3
 
puts "  d. Containing class is reopened and const defined"
 
class F
  X = 4
end
 
class G
  class H < F
    def self.c; X; end
    def c; X; end
  end
end
 
p G.const_defined?(:X) == false
 
p G::H.c == 4
p G::H.const_defined?(:X) == false
p G::H.const_get(:X) == 4
p G::H.new.c == 4
 
class G
  X = 5
end
 
p G.const_defined?(:X)
 
p G::H.c == 5
p G::H.const_defined?(:X) == false
p G::H.const_get(:X) == 4
p G::H.new.c == 5
 
puts "  e. Superclass is reopened and const value changed"
 
class K
  X = 8
end
 
class L < K
  def self.c; X; end
  def c; X; end
end
 
p K.const_defined?(:X)
 
p L.c == 8
p L.const_defined?(:X) == false
p L.const_get(:X) == 8
p L.new.c == 8
 
class K
  X = 9
end
 
p L.c == 9
p L.const_defined?(:X) == false
p L.const_get(:X) == 9
p L.new.c == 9
 
puts "  f. Included module does not define const"
 
module N
end
 
class A
  include N
end
 
p A.c == 1
p A.const_defined?(:X)
p A.const_get(:X) == 1
p A.new.c == 1
 
class B
  include N
end
 
p B.c == 1
p B.const_defined?(:X) == false
p B.const_get(:X) == 1
p B.new.c == 1
 
class C
  include N
end
 
p C.c == 1
p C.const_defined?(:X) == false
p C.const_get(:X) == 1
p C.new.c == 1
 
class D
  include N
end
 
p D.c == 1
p D.const_defined?(:X)
p D.const_get(:X) == 2
p D.new.c == 1
 
class E
  include N
end
 
p E.c == 3
p E.const_defined?(:X)
p E.const_get(:X) == 3
p E.new.c == 3
 
class G
  include N
end
 
p G.const_defined?(:X)
 
p G::H.c == 5
p G::H.const_defined?(:X) == false
p G::H.const_get(:X) == 4
p G::H.new.c == 5
 
puts "  g. Included module defines const"
 
module M
  X = 6
end
 
class A
  include M
end
 
p A.c == 1
p A.const_defined?(:X)
p A.const_get(:X) == 1
 
a = A.new
p a.c == 1
a.extend M
p a.c == 1
 
class B
  include M
end
 
p B.c == 1
p B.const_defined?(:X) == false
p B.const_get(:X) == 1
 
b = B.new
p b.c == 1
b.extend M
p b.c == 1
 
class C
  include M
end
 
p C.c == 1
p C.const_defined?(:X) == false
p C.const_get(:X) == 1
 
c = C.new
p c.c == 1
c.extend M
p c.c == 1
 
class D
  include M
end
 
p D.c == 1
p D.const_defined?(:X)
p D.const_get(:X) == 2
 
d = D.new
p d.c == 1
d.extend M
p d.c == 1
 
class E
  include M
end
 
p E.c == 3
p E.const_defined?(:X)
p E.const_get(:X) == 3
 
e = E.new
p e.c == 3
e.extend M
p e.c == 3
 
class G
  include M
end
 
p G.const_defined?(:X)
 
p G::H.c == 5
p G::H.const_defined?(:X) == false
p G::H.const_get(:X) == 4
 
h = G::H.new
p h.c == 5
h.extend M
p h.c == 5
 
class I
  include M
 
  def self.c; X; end
  def c; X; end
end
 
p I.c == 6
p I.const_defined?(:X) == false
p I.const_get(:X) == 6
 
i = I.new
p i.c == 6
i.extend M
p i.c == 6
 
class J
  include M
  X = 7
 
  def self.c; X; end
  def c; X; end
end
 
p J.c == 7
p J.const_defined?(:X)
p J.const_get(:X) == 7
 
j = J.new
p j.c == 7
j.extend M
p j.c == 7
 
puts "2. Dynamically setting constant"
 
 
puts "3. Removing constant"