Module: Test::Unit::Util::BacktraceFilter

Included in:
Assertions::AssertionMessage, Error, Notification, Omission, Pending, TestCase
Defined in:
lib/test/unit/util/backtracefilter.rb

Constant Summary collapse

TESTUNIT_FILE_SEPARATORS = 
%r{[\\/:]}
TESTUNIT_PREFIX = 
__FILE__.split(TESTUNIT_FILE_SEPARATORS)[0..-3]
TESTUNIT_RB_FILE = 
/\.rb\Z/

Class Method Summary collapse

Class Method Details

.filter_backtrace(backtrace, prefix = nil) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/test/unit/util/backtracefilter.rb', line 10

def filter_backtrace(backtrace, prefix=nil)
  return ["No backtrace"] unless backtrace
  return backtrace if ENV["TEST_UNIT_ALL_BACKTRACE"]

  if prefix
    split_prefix = prefix.split(TESTUNIT_FILE_SEPARATORS)
  else
    split_prefix = TESTUNIT_PREFIX
  end
  test_unit_internal_p = lambda do |entry|
    components = entry.split(TESTUNIT_FILE_SEPARATORS)
    split_entry = components[0, split_prefix.size]
    next false unless split_entry[0..-2] == split_prefix[0..-2]
    split_entry[-1].sub(TESTUNIT_RB_FILE, '') == split_prefix[-1]
  end

  in_user_code = false
  new_backtrace = backtrace.reverse.reject do |entry|
    if test_unit_internal_p.call(entry)
      in_user_code = true
      true
    else
      not in_user_code
    end
  end.reverse

  if new_backtrace.empty?
    new_backtrace = backtrace.reject do |entry|
      test_unit_internal_p.call(entry)
    end
    new_backtrace = backtrace if new_backtrace.empty?
  end
  new_backtrace
end