I have a multi-module Maven project. For the sake of this example, consider two modules:
dataconsumerModul
So the problem is that (some) tests in the data module depend on the SampleDataHelper class? You can move the SampleDataHelper class to src/main of the data-test module, if you at the same time move the tests (that depend on the specific class) to the src/test of the data-test module. Consequently, there would be no more circular dependencies.