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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 = 10
rec = lambda{|n|
if n > 0
1.times{
rec[n-1]
}
else
(max*3).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
def test_caller_lev_and_n
m = 10
rec = lambda{|n|
if n < 0
(m*6).times{|lev|
(m*6).times{|n|
t = caller(0).size
r = caller(lev, n)
r = r.size if r.respond_to? :size
# STDERR.puts [t, lev, n, r].inspect
if n == 0
assert_equal(0, r, [t, lev, n, r].inspect)
elsif t < lev
assert_equal(nil, r, [t, lev, n, r].inspect)
else
if t - lev > n
assert_equal(n, r, [t, lev, n, r].inspect)
else
assert_equal(t - lev, r, [t, lev, n, r].inspect)
end
end
}
}
else
rec[n-1]
end
}
rec[m]
end
def test_caller_frame_info
fis = RubyVM::FrameInfo.caller(0); cs = caller(0)
assert_equal(cs.size, fis.size)
fis.zip(cs).each{|fi, s|
assert_match(/#{fi.name}/, s)
assert_match(/#{fi.filename}/, s)
assert_match(/#{fi.line_no}/, s)
}
end
end
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