Apache camel test fails in project created with camel-archetype-blueprint

I want to add some tests to my camel project so I decided to create a clean project using maven and the camel-archetype-blueprint archetype to look at some samples.

Now I created the project using:

mvn archetype:generate -DarchetypeGroupId=org.apache.camel.archetypes -DarchetypeArtifactId=camel-archetype-blueprint -DarchetypeVersion=2.15.3 -DgroupId=de.test - DartifactId=Testing

but without editing anything the test fails by default with this exception (building it with mvn package):

java.lang.RuntimeException: InputStream cannot be null

Is there anything else I have to do to for those tests to run?