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require 'test/unit'
class TestBacktrace < Test::Unit::TestCase
def test_exception
bt = Fiber.new{
begin
raise
rescue => e
e.backtrace
end
}.resume
assert_equal(1, bt.size)
assert_match(/.+:\d+:.+/, bt[0])
end
def test_caller_lev
cs = []
Fiber.new{
Proc.new{
cs << caller(0)
cs << caller(1)
cs << caller(2)
cs << caller(3)
cs << caller(4)
cs << caller(5)
}.call
}.resume
assert_equal(3, cs[0].size)
assert_equal(2, cs[1].size)
assert_equal(1, cs[2].size)
assert_equal(0, cs[3].size)
assert_equal(nil, cs[4])
#
max = 20
rec = lambda{|n|
if n > 0
1.times{
rec[n-1]
}
else
max.times{|i|
total_size = caller(0).size
c = caller(i)
if c
assert_equal(total_size - i, caller(i).size, "[ruby-dev:45673]")
end
}
end
}
bt = Fiber.new{
rec[max]
}.resume
end
end
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