slachiewicz commented on PR #902:
URL: https://github.com/apache/maven-wagon/pull/902#issuecomment-5225922578
Updated, and the headline is that this is now verified rather than asserted.
**The harness came back.** #904 revives the embedded SSH tests, which had
not run in over a decade. Running this branch's two commits on top of it: **42
tests, 0 failures** against a real embedded MINA sshd server. That replaces the
"unverified by the project's own tests" caveat this PR opened with. #904 should
go in first.
**It immediately caught a fatal bug in this branch, now fixed.** My agent
lookup listed the three connector kinds in a `static final` array:
```java
private static final AgentConnectorFactory[] AGENT_CONNECTORS = {
SSHAgentConnector::new, WindowsSSHAgentConnector::new,
PageantConnector::new
};
```
`PageantConnector` needs JNA, and the fork declares no dependencies, so
class initialisation of `ScpWagon` died with `NoClassDefFoundError:
com/sun/jna/Pointer` wrapped in `ExceptionInInitializerError`. **`wagon-ssh`
would not have loaded at all.** The default test run never instantiates a
provider, so it went unnoticed; the embedded harness instantiates one on the
first test and failed 24 of 42.
Each connector is now both constructed and used inside its own guard that
catches `LinkageError`, so a missing class is one skipped agent rather than a
failure to load. Pageant therefore still works if JNA is on the class path and
is skipped quietly otherwise. Re-run: 42 of 42.
That is a good argument for #904 on its own merits — this defect was
invisible to everything else in the build.
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