Is there any way to mock an external call with more results in Foundry?

[0xZenus]

Component

Forge

Describe the feature you would like

I'm trying to write unit tests in Foundry and I've quite enjoyed the ability to mock external calls using function mockCall(address where, uint256 value, bytes calldata data, bytes calldata retdata) external.

However, I can't figure out if there's any way to mock an external call that returns two different results when gets called twice in a function (similar to sideEffect in sinon).

Example:

function getDelta(address calculatorAddress) external returns (int256 delta) {
        ICalculator calculator = ICalculator(calculatorAddress);

        int256 preUpdateValue = calculator.getValue();

        calculator.update();

        int256 postUpdateValue = calculator.getValue();

        delta = postUpdateValue - preUpdateValue;
    }
}

If I use mockCall for calculator.getValue(), it will return the same result for both calls and I'll get 0. Hence, I'd like to be able to mock this call such that it returns different results.

Additional context

No response