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require 'test/unit'
require 'continuation'
require 'fiber'
require_relative 'envutil'
class TestContinuation < Test::Unit::TestCase
def test_create
assert_equal(:ok, callcc{:ok})
assert_equal(:ok, callcc{|c| c.call :ok})
end
def test_call
assert_equal(:ok, callcc{|c| c.call :ok})
ary = []
ary << callcc{|c|
@cont = c
:a
}
@cont.call :b if ary.length < 3
assert_equal([:a, :b, :b], ary)
end
def test_check_localvars
vv = 0
@v = 0
@ary = []
[1, 2, 3].each{|i|
callcc {|k| @k = k}
@v += 1
vv += 1
}
@ary << [vv, @v]
@k.call if @v < 10
assert_equal((3..10).map{|e| [e, e]}, @ary)
end
def test_error
cont = callcc{|c| c}
assert_raise(RuntimeError){
Thread.new{cont.call}.join
}
assert_raise(LocalJumpError){
callcc
}
assert_raise(RuntimeError){
c = nil
Fiber.new do
callcc {|c2| c = c2 }
end.resume
c.call
}
end
def test_sort
assert_normal_exit(<<-'End')
require 'continuation'
n = 1000
ary = (1..100).to_a
ary.sort! {|a,b|
callcc {|k| $k = k } if !defined? $k
a <=> b
}
n -= 1
$k.call if 0 < n
End
end
end
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