Exception while testing blueprint.xml using standalone code.

Issue

I have created a unit test using the camel-test-blueprint as instructed in link. It's a simple route with two mock end points. When I ran the test case, it fails with exception:

 Blueprint Extender: 3] BlueprintContainerImpl ERROR Unable to start blueprint container for bundle PrototypeTest
java.lang.NoClassDefFoundError: org/apache/camel/TypeConverterExists
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2615)
    at java.lang.Class.getDeclaredMethod(Class.java:2007)
        . . .
Caused by: java.lang.ClassNotFoundException: org.apache.camel.TypeConverterExists
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)