[logback-user] jcl-over-slf4j problem

[lee json]

I understand this might not logback's issue, but I would like to
collect more information so hope to fix my problem.

Basically there is no problem to execute unit tests if I removed all
logback related dependency. I am just wondering what inside
jcl-over-slf4j may collide against dependencies in my project.

I notice that when I add jcl-over-slf4j as dependency

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jcl-over-slf4j</artifactId>
      <version>1.7.5</version>
    </dependency>

this leads to my test case not being executed with maven result
printed "no tests were executed!". My scala test version is 2.10

    <dependency>
      <groupId>org.scalatest</groupId>
      <artifactId>scalatest_2.10</artifactId>
      <version>2.0</version>
      <scope>test</scope>
    </dependency>

and junit version is 4.8.1

      <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.8.1</version>
      </dependency>

If I comment out jcl-over-slf4j, maven reports "there are tests failure"

Failed to execute goal
org.apache.maven.plugins:maven-surefire-plugin:2.6:test (default-test)
...: There are test failures

Please refer to.../target/surefire-reports for the individual test results.

But surefire-reports folder actually is not created

$ ls target/surefire-reports
ls: cannot access target/surefire-reports: No such file or directory

Environment I use
Maven version is 3.0.5
Java version 1.6.x

I appreciate any suggestions.
Thanks