On 2018-02-07, Jochen Wiedmann wrote:

> On Wed, Feb 7, 2018 at 9:54 AM, Stefan Bodewig <bode...@apache.org> wrote:

>> I know I asked before (I really am not an OSGi guy at all) and was
>> pointed into a direction for writing a test that would start a small
>> container and load the bundle. This should help, but unfortunately the
>> very idea slipped further and further down my priority list.

> Well, if *you* are having trouble here, that's bound to happen for
> others, too.  And, I don't know how they would implement that,
> internally, but as it's their topic, I clearly have the expectation,
> that *they* provide something useful.

I'd be content with having a regression test, although I'm not sure how
involved it would get. This time the Import-Package value was
syntactically incorrect, this might get caught by static analysis. Last
time I stripped an Import-Package (the one for XZ when I added the
Brotli dependency IIRC), so the manifest was valid but you have been
unable to use the algorithms provided by XZ. This is a runtime issue
that really requires a test, I guess.

> Btw: Would org.apache.felix:maven-bundle-plugin:3.5.0:verify have
> spotted the problem?

At least not when I use it the naive way (this is based on the rel/1.16
tag:

$ mvn org.apache.felix:maven-bundle-plugin:3.5.0:verify
[INFO] Scanning for projects...
[INFO] 
[INFO] ------------------------------------------------------------------------
[INFO] Building Apache Commons Compress 1.16
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-bundle-plugin:3.5.0:verify (default-cli) @ commons-compress ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.625 s
[INFO] Finished at: 2018-02-07T11:04:54+01:00
[INFO] Final Memory: 15M/605M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal 
org.apache.felix:maven-bundle-plugin:3.5.0:verify (default-cli) on project 
commons-compress: Execution default-cli of goal 
org.apache.felix:maven-bundle-plugin:3.5.0:verify failed.: NullPointerException 
-> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e 
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.

with -X I only get a Maven internal stack trace. Same for the 3.4.0
version that is requested by commons-parent 43.

TBH I don't want to dig deeper here as I really think we need runtime
verification over static analysis.

Stefan

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