parallelize FFI language binding tests in contrib/test.sh

[caarloshenriq]

Parallelizes the language binding tests in payjoin-ffi/contrib/test.sh
instead of running them sequentially.

This is a follow-up to a comment by @spacebear21 on #1492.

AI Assistance: Used Claude to help implement the parallelization approach.

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[coveralls]

Coverage Report for CI Build 25342713923

Coverage remained the same at 85.088%

Details

• Coverage remained the same as the base build.
• Patch coverage: No coverable lines changed in this PR.
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

---

Coverage Stats

Relevant Lines:	13526
Covered Lines:	11509
Line Coverage:	85.09%
Coverage Strength:	396.36 hits per line

---

💛 - Coveralls

[benalleng]

Added a commit to fix the execution permissions which were a problem in JS too.

TACK 8b64a29

[benalleng]

So I have it in writing I did have to clean the ~/payjoin-ffi/dart/native/Cargo.lock as it was suffering from a failure due to the stuff from #1502. Maybe it would be useful to have a script to just clean this deep nested lockfile every time we run tests assuming it doesn't get touched very often.

[caarloshenriq]

Maybe it would be useful to have a script to just clean this

added a script in dart/contrib/test.sh to clean this.

[spacebear21]

cACK

I'm afk this week so may not get around to testing this but ideally would like someone to validate and post the output of:

• all succeeds
• fails for one specific language
• fails for all languages

[caarloshenriq]

would like someone to validate and post the output

Here are the three scenarios you requested. I've trimmed the outputs for readability as they were quite verbose:

1. All succeeds (exit code: 0):

== Running dart tests...
00:21 +17: All tests passed!

== Running C# tests...
Payjoin.Tests - Payjoin.Tests.dll
Test run for Payjoin.Tests.dll (.NETCoreApp,Version=v8.0)

== Running tests... (python)
Ran 17 tests in 13.993s OK

== Running JavaScript tests...
npm run ubrn:web && npm run compile && npm run copy-wasm && npm run fix-imports
✓ All done

$ echo $? - 0

2. Fails for one specific language — javascript (exit code: 1):

00:20 +17: All tests passed! (dart)
Ran 17 tests in 11.809s OK (python)

error: failed to select a version for `bitcoin-units`
...failed to select a version for `bitcoin-units` which could resolve this conflict
Error: Failed to run command (javascript)

$ echo $? - 1

3. Fails for all languages (exit code: 1):

running 0 tests
test result: ok. 0 passed (rust)

dart: exit 1
javascript: exit 1
python: exit 1
csharp: exit 1

$ echo $? - 1

In all failure scenarios the script correctly returns exit code 1, and in scenario 2 the passing languages continued running in parallel without being blocked by the failing one.

[spacebear21]

3. Fails for all languages (exit code: 1):

running 0 tests
test result: ok. 0 passed (rust)

dart: exit 1
javascript: exit 1
python: exit 1
csharp: exit 1

$ echo $? - 1

Is there any way to show error details in this case? How would I know what broke and how to fix it?

[caarloshenriq]

Is there any way to show error details in this case? How would I know what broke and how to fix it?

When a binding fails, the output is now captured and displayed cleanly. Here's an example from javascript:

==> FAILED: javascript
--- output ---
error: linking with `rust-lld` failed: exit status: 1
  = note: rust-lld: warning: libsecp256k1_sys-250d8be217cf87eb.rlib: archive member 'feda9fcdfe63d077-wasm.o' is neither Wasm object file nor LLVM bitcode
  = note: rust-lld: error: payjoin_ffi.82exxyr01t4n25imj0drliu29.18mfego.rcgu.o: undefined symbol: rustsecp256k1_v0_10_0_context_no_precomp
  = note: rust-lld: error: too many errors emitted, stopping now (use -error-limit=0 to see all errors)

error: could not compile `payjoin-ffi` (lib) due to 1 previous error
Error: Failed to run command

[spacebear21]

tACK 258892c