Github user scosenza commented on the pull request:
https://github.com/apache/flink/pull/1972#issuecomment-218318387
Hi Robert,
Typically, a test-jar would not contain JUnit test classes unless they are
designed to be extended. On a related note, it's also good to avoid including
logback-test.xml inside your test-jars, as this leads to the following warning
when others (who are also using logback) depend on your test-jar.
```
16:01:09,771 |-INFO in ch.qos.logback.classic.LoggerContext[default] -
Found resource [logback-test.xml] at
[file:/Users/.../target/test-classes/logback-test.xml]
16:01:09,772 |-WARN in ch.qos.logback.classic.LoggerContext[default] -
Resource [logback-test.xml] occurs multiple times on the classpath.
16:01:09,772 |-WARN in ch.qos.logback.classic.LoggerContext[default] -
Resource [logback-test.xml] occurs at
[jar:file:/Users/scosenza/.m2/repository/org/apache/flink/flink-connector-kafka-base_2.11/1.0.2/flink-connector-kafka-base_2.11-1.0.2-tests.jar!/logback-test.xml]
16:01:09,772 |-WARN in ch.qos.logback.classic.LoggerContext[default] -
Resource [logback-test.xml] occurs at
[jar:file:/Users/scosenza/.m2/repository/org/apache/flink/flink-core/1.0.2/flink-core-1.0.2-tests.jar!/logback-test.xml]
16:01:09,772 |-WARN in ch.qos.logback.classic.LoggerContext[default] -
Resource [logback-test.xml] occurs at
[file:/Users/scosenza/.../target/test-classes/logback-test.xml]
16:01:09,772 |-WARN in ch.qos.logback.classic.LoggerContext[default] -
Resource [logback-test.xml] occurs at
[jar:file:/Users/scosenza/.m2/repository/org/apache/flink/flink-runtime_2.11/1.0.2/flink-runtime_2.11-1.0.2-tests.jar!/logback-test.xml]
```
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