# Automatically drop into debugger or infiltrate on test error or failure
**URL:** https://discourse.julialang.org/t/automatically-drop-into-debugger-or-infiltrate-on-test-error-or-failure/98423
**Category:** New to Julia
**Created:** [May 6, 2023, 10:33pm UTC](https://discourse.julialang.org/t/automatically-drop-into-debugger-or-infiltrate-on-test-error-or-failure/98423 "2023-05-06T22:33:41Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@jwkvam](https://discourse.julialang.org/u/jwkvam)
#### Post date: [May 6, 2023, 10:33pm UTC](https://discourse.julialang.org/t/automatically-drop-into-debugger-or-infiltrate-on-test-error-or-failure/98423/1 "2023-05-06T22:33:41Z")
tl;dr: I’m looking for roughly the equivalent of `pytest --pdb` for those familiar with pytest.
I would like to drop into a debugger or infiltrator when a unit test fails. If I run a test and it fails and I can’t immediately figure it out, I rerun the test with `@infiltrate` sprinkled in. I feel like it would greatly improve my workflow if I could just have that as an option when I run my unit tests. Then I wouldn’t need to add and remove `@infiltrate`.
I was trying to wrap the `@test` macro, such that if it returned a fail or error result, it would run `@infiltrate`. I haven’t been clever enough to figure out how to do that however.
Edit: After some more thinking, this seems to work for me so far.
```julia
using Test
using Infiltrator
macro itest(ex, kws...)
quote
o = @test($(esc(ex)), $(esc.(kws)...))
typeof(o) != Test.Pass && @infiltrate
o
end
end
```
Then I can just use `@itest` instead of `@test`.
---
### Author:  [@hendri54](https://discourse.julialang.org/u/hendri54)
#### Post date: [May 7, 2023, 12:44pm UTC](https://discourse.julialang.org/t/automatically-drop-into-debugger-or-infiltrate-on-test-error-or-failure/98423/2 "2023-05-07T12:44:46Z")
If something like this could be done outside of unit testing, that would be useful as well.
The use case would be, for example, a long running simulation with edge cases that I may not have anticipated. When the simulation fails, not having to rerun it after inserting `@infiltrate` would be a time saver.
---
### Author:  [@tim.holy](https://discourse.julialang.org/u/tim.holy)
#### Post date: [May 7, 2023, 1:03pm UTC](https://discourse.julialang.org/t/automatically-drop-into-debugger-or-infiltrate-on-test-error-or-failure/98423/3 "2023-05-07T13:03:22Z")
That’s what Rebugger.jl did. But it’s not currently maintained due to lack of humanpower. I’m happy to accept PRs to get it back in working order.