59 lines
1.1 KiB
Ruby
59 lines
1.1 KiB
Ruby
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require 'test/unit'
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$KCODE = 'none'
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class TestVariable < Test::Unit::TestCase
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class Gods
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@@rule = "Uranus"
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def ruler0
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@@rule
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end
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def self.ruler1 # <= per method definition style
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@@rule
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end
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class << self # <= multiple method definition style
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def ruler2
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@@rule
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end
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end
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end
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module Olympians
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@@rule ="Zeus"
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def ruler3
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@@rule
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end
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end
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class Titans < Gods
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@@rule = "Cronus"
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include Olympians # OK to cause warning (intentional)
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end
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def test_variable
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assert($$.instance_of?(Fixnum))
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# read-only variable
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begin
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$$ = 5
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assert false
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rescue NameError
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assert true
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end
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foobar = "foobar"
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$_ = foobar
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assert($_ == foobar)
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assert(Gods.new.ruler0 == "Cronus")
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assert(Gods.ruler1 == "Cronus")
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assert(Gods.ruler2 == "Cronus")
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assert(Titans.ruler1 == "Cronus")
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assert(Titans.ruler2 == "Cronus")
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atlas = Titans.new
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assert(atlas.ruler0 == "Cronus")
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assert(atlas.ruler3 == "Zeus")
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end
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end
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