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Show backtraces when failed

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If `assert_equal(backtrace_locations.size, profile_frames.size)` in
`TestProfileFrames#test_matches_backtrace_locations_main_thread`
failed, we do not have enough information about it like that:

```
    1) Failure:
  TestProfileFrames#test_matches_backtrace_locations_main_thread [/home/runner/work/ruby/ruby/src/test/-ext-/debug/test_profile_frames.rb:148]:
  <31> expected but was
  <30>.
```

This patch shows both `backtrace_locations` and `profile_frames`
if failed.
This commit is contained in:
Koichi Sasada 2023-10-18 10:28:44 +09:00
parent f546fe15d5
commit 46b8846b5c
1 changed files with 9 additions and 1 deletions
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10
test/-ext-/debug/test_profile_frames.rb
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@ -145,7 +145,15 @@ class TestProfileFrames < Test::Unit::TestCase
# Keep these in the same line, so the backtraces match exactly
backtrace_locations, profile_frames = [Thread.current.backtrace_locations, Bug::Debug.profile_frames(0, 100)]
assert_equal(backtrace_locations.size, profile_frames.size)
errmsg = "backtrace_locations:\n " + backtrace_locations.map.with_index{|loc, i| "#{i} #{loc}"}.join("\n ")
errmsg += "\n\nprofile_frames:\n " + profile_frames.map.with_index{|(path, absolute_path, _, base_label, _, _, _, _, _, full_label, lineno), i|
if lineno
"#{i} #{absolute_path}:#{lineno} // #{full_label}"
else
"#{i} #{absolute_path} #{full_label}"
end
}.join("\n ")
assert_equal(backtrace_locations.size, profile_frames.size, errmsg)
# The first entries are not going to match, since one is #backtrace_locations and the other #profile_frames
backtrace_locations.shift