Create separate test workflow with Capture Workflow

I’m new to KNIME and want to create a test workflow, which is independent from my actual workflow, but checks outputs of the latter. This implies that even if my tests fail, the actual workflow is not affected by the test failures. To achieve this I want use Capture Workflow nodes. I have the following structure in mind (simplified):

workflow A —> Capture Workflow End —> workflow B

***** |

***Test output of workflow A (attached to the Capture Workflow End)

Is this possible? And if yes, can I have multiple test workflows integrated as shown above in a more complex workflow than in the given example?