The BearerMechanismFactory is used to create a BearerTokenAuthenticationMechanism instance.

Add a new test class in the tests/base/src/test/java/org/wildfly/security/http/bearer directory that verifies the functionality of the methods provided by the BearerMechanismFactory.

As an example, take a look at the DigestMechanismFactoryTest class that verifies the functionality of the DigestMechanismFactory.