[jira] [Created] (TOMEE-4642) Deployment fails when a war lists a servlet or filter class it does not package

["Markus Jung (Jira)" <ji...@apache.org>]

Markus Jung created TOMEE-4642:
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             Summary: Deployment fails when a war lists a servlet or filter class it does not package
                 Key: TOMEE-4642
                 URL: https://issues.apache.org/jira/browse/TOMEE-4642
             Project: TomEE
          Issue Type: Bug
          Components: TomEE Core Server
            Reporter: Markus Jung


h2. Summary
TomEE stops the whole web context when a war names a servlet or filter class the war does not contain.

h2. Description
When a war's deployment descriptor or annotation names a servlet or filter class, but the class is not in the war, TomEE aborts startup of the whole context. Two Jakarta Servlet TCK deployments trigger this: the pluggability {{RegistrationTests}} deployment names filter {{AddFilterString}}, and the spec {{DefaultMappingTests}} deployment names servlet {{TestServlet1}}. Neither class ships in its war.

Both contexts fail to start. Every test method in both classes then errors, since each method needs a working deployment URL and gets none.

The Servlet 6.1 spec calls for strict checks on registered components, but a missing class should not bring down the full context. The current behaviour treats a single unresolved servlet or filter reference as fatal to the whole deployment, when the failure should stay local to that class.

h2. Steps to reproduce / TCK reference
* TCK test classes: {{RegistrationTests}} (Jakarta Servlet TCK, pluggability), {{DefaultMappingTests}} (Jakarta Servlet TCK, spec)
* Deploy the wars used by these classes; each names a servlet or filter class it does not package ({{AddFilterString}} for {{RegistrationTests}}, {{TestServlet1}} for {{DefaultMappingTests}})
* Result: context startup fails, all methods in both classes error on the missing deployment URL
* Currently excluded in: {{runner-standalone/exclusions/servlet.txt}} (2 class entries, 12 methods) in the apache/tomee-tck harness repo.
* Remove the exclusion entries once fixed and confirm both classes pass



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