Gradle: how to exclude some tests?

Question

My src/test/ folder includes both unit and functional tests. The classpath of functional tests has the word cucumber, whereas the unit tests do not. So, how can I run the unit tests only?

Thank you very much.

P.S.: I know it is easy to use the "include" logic to select tests. For example, to only run the functional tests in my case, I can simply use this
./gradlew test -Dtest.single=cucumber/**/
However, I don't know how to exclude tests in a simple way.

BTW, I am using gradle 1.11.

Answer 1

Credit: This answer is inspired by JB Nizet's answer. It is posted because it is more direct to my question.

To run the unit tests only, create a new task like this:

task unitTest( type: Test ) {     exclude '**/cucumber/**' } 

This way we have:
run all tests: ./gradlew test
run all unit tests: ./gradlew unitTest
run all functional tests: ./gradlew test -Dtest.single=cucumber/**/