Namespace mockServices

Remarks

There are some variations among the services depending on what needs tests might have, but overall there are three main usage patterns:

1. Creating an actual fake service instance, often with a simplified version of functionality, by calling the mock service itself as a function.

// The function often accepts parameters that control its behavior
const foo = mockServices.foo();
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2. Creating a mock service, where all methods are replaced with jest mocks, by calling the service's mock function.

// You can optionally supply a subset of its methods to implement
const foo = mockServices.foo.mock({
  someMethod: () => 'mocked result',
});
// After exercising your test, you can make assertions on the mock:
expect(foo.someMethod).toHaveBeenCalledTimes(2);
expect(foo.otherMethod).toHaveBeenCalledWith(testData);
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3. Creating a service factory that behaves similarly to the mock as per above.

await startTestBackend({
  features: [
    mockServices.foo.factory({
      someMethod: () => 'mocked result',
    })
  ],
});
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