Test case for cont_regr

test.yml

entities:
    person:
        fields:
            - age:    int
            - gender: bool
            - test: {type: float, initialdata: false}

        processes:
            test: cont_regr(age, mult=0.5, filter=gender)

simulation:
    processes:
        - person: [test]

    input:
        file: simple2001.h5
    output:
        file: simulation.h5

    start_period: 2002
    periods: 1