58 lines
1.1 KiB
Ruby
58 lines
1.1 KiB
Ruby
require 'test/unit'
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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" # do not affect @@rule in Gods
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include Olympians
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def ruler4
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@@rule
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end
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end
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def test_variable
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assert_instance_of(Fixnum, $$)
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# read-only variable
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assert_raises(NameError) do
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$$ = 5
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end
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foobar = "foobar"
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$_ = foobar
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assert_equal(foobar, $_)
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assert_equal("Uranus", Gods.new.ruler0)
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assert_equal("Uranus", Gods.ruler1)
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assert_equal("Uranus", Gods.ruler2)
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assert_equal("Uranus", Titans.ruler1)
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assert_equal("Uranus", Titans.ruler2)
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atlas = Titans.new
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assert_equal("Uranus", atlas.ruler0)
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assert_equal("Zeus", atlas.ruler3)
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assert_equal("Cronus", atlas.ruler4)
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end
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end
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