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require 'test/unit'
require 'thread'
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 helper_test_exception_backtrace_locations
raise
end
def test_exception_backtrace_locations
backtrace, backtrace_locations = Fiber.new{
begin
raise
rescue => e
[e.backtrace, e.backtrace_locations]
end
}.resume
assert_equal(backtrace, backtrace_locations.map{|e| e.to_s})
backtrace, backtrace_locations = Fiber.new{
begin
begin
helper_test_exception_backtrace_locations
rescue
raise
end
rescue => e
[e.backtrace, e.backtrace_locations]
end
}.resume
assert_equal(backtrace, backtrace_locations.map{|e| e.to_s})
end
def call_helper_test_exception_backtrace_locations
helper_test_exception_backtrace_locations(:bad_argument)
end
def test_argument_error_backtrace_locations
backtrace, backtrace_locations = Fiber.new{
begin
helper_test_exception_backtrace_locations(1)
rescue ArgumentError => e
[e.backtrace, e.backtrace_locations]
end
}.resume
assert_equal(backtrace, backtrace_locations.map{|e| e.to_s})
backtrace, backtrace_locations = Fiber.new{
begin
call_helper_test_exception_backtrace_locations
rescue ArgumentError => e
[e.backtrace, e.backtrace_locations]
end
}.resume
assert_equal(backtrace, backtrace_locations.map{|e| e.to_s})
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 = 7
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_with_nil_length
assert_equal caller(0), caller(0, nil)
end
def test_caller_locations
cs = caller(0); locs = caller_locations(0).map{|loc|
loc.to_s
}
assert_equal(cs, locs)
end
def test_caller_locations_with_range
cs = caller(0,2); locs = caller_locations(0..1).map { |loc|
loc.to_s
}
assert_equal(cs, locs)
end
def test_caller_locations_to_s_inspect
cs = caller(0); locs = caller_locations(0)
cs.zip(locs){|str, loc|
assert_equal(str, loc.to_s)
assert_equal(str.inspect, loc.inspect)
}
end
def th_rec q, n=10
if n > 1
th_rec q, n-1
else
q.pop
end
end
def test_thread_backtrace
begin
q = Queue.new
th = Thread.new{
th_rec q
}
sleep 0.5
th_backtrace = th.backtrace
th_locations = th.backtrace_locations
assert_equal(10, th_backtrace.count{|e| e =~ /th_rec/})
assert_equal(th_backtrace, th_locations.map{|e| e.to_s})
assert_equal(th_backtrace, th.backtrace(0))
assert_equal(th_locations.map{|e| e.to_s},
th.backtrace_locations(0).map{|e| e.to_s})
th_backtrace.size.times{|n|
assert_equal(n, th.backtrace(0, n).size)
assert_equal(n, th.backtrace_locations(0, n).size)
}
n = th_backtrace.size
assert_equal(n, th.backtrace(0, n + 1).size)
assert_equal(n, th.backtrace_locations(0, n + 1).size)
ensure
q << true
end
end
def test_thread_backtrace_locations_with_range
begin
q = Queue.new
th = Thread.new{
th_rec q
}
sleep 0.5
bt = th.backtrace(0,2)
locs = th.backtrace_locations(0..1).map { |loc|
loc.to_s
}
assert_equal(bt, locs)
ensure
q << true
end
end
def test_core_backtrace_alias
obj = BasicObject.new
e = assert_raise(NameError) do
class << obj
alias foo bar
end
end
assert_not_match(/\Acore#/, e.backtrace_locations[0].base_label)
end
def test_core_backtrace_undef
obj = BasicObject.new
e = assert_raise(NameError) do
class << obj
undef foo
end
end
assert_not_match(/\Acore#/, e.backtrace_locations[0].base_label)
end
def test_core_backtrace_hash_merge
e = assert_raise(TypeError) do
{**nil}
end
assert_not_match(/\Acore#/, e.backtrace_locations[0].base_label)
end
end
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