Hi Amit, I experienced the same problem. According to
http://maven.apache.org/surefire/maven-surefire-plugin/examples/configuring-classpath.html there is a certain classpath ordering for unittests favoring project dependencies. Therefore by explicitly specifying the lucene-test-framework as such a dependency inside the pom.xml, it should appear before lucene-core.jar: <dependency> <groupId>org.apache.lucene</groupId> <artifactId>lucene-test-framework</artifactId> <version>4.1.0</version> <scope>test</scope> </dependency> In my case, this fixed the problem. Best regards Jan -- View this message in context: http://lucene.472066.n3.nabble.com/Anyone-else-see-this-error-when-running-unit-tests-tp4015034p4038039.html Sent from the Solr - User mailing list archive at Nabble.com.