LPS-36119 Add @Test annotation to test classes
LPS-36156 Split StringBundlerTest test methods separating them by functionality
LPS-30360 Use AssertUtils methods instead of com.liferay.portal.kernel.test.TestCase's
LPS-30360 Move AsserUtil to portal-service, as it can be used from other modules
LPS-30360 Remove dependencies from com.liferay.portal.kernel.test.TestCase