Tests are not run properly but pass

[andistorm]

Description

When using the ProbeModule in pytest tests and missing the probe_module.start() command the tests are passing, but all the cmd calls can't be made since the probe_module isn't running and everest_core is waiting for standalone modules.

How to reproduce

1. checkout workspace-config
   workspace-config.yaml.txt

edm init --config workspace-config.yaml --workspace .

2. build everest-core

mkdir build
cd build
cmake ../everest-core/ -DBUILD_TESTING=ON -DCMAKE_INSTALL_PREFIX=./dist
make install everestpy_pip_install_local install_everest_testing

3. run error history module tests

cd everest-core
pytest --everest-prefix ../build/dist/ tests/core_tests/error_history_tests.py

Expected behaviour

Both tests should fail since probe_module.start() is missing and no cmd calls can be made