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MassTransit–How to test consumers with dependencies

I’m using Dependency Injection in my MassTransit consumers. To test these consumers you can use MassTransit in-memory test harness;

But when you try to use the code above with a consumer that has dependencies injected through the constructor, it will not work and you end up with the following error message:

'SubmitOrderConsumer' must be a non-abstract type with a public parameterless constructor in order to use it as parameter 'T' in the generic type or method 'ConsumerTestHarnessExtensions.Consumer<T>(BusTestHarness, string)'

To fix this, you have to change your test code and use the consumer factory method:

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