Using calledWith where a parameter in an object is a callback about jest-mock-extended

[maaasyn]

Hey, for those who end up here by googling, I may have a solution for your issue:

import {Matcher } from "jest-mock-extended";
import { isEqual } from "lodash";


const objectWithTheSameFields = <T>(expectedValue: T) =>
  new Matcher<T | unknown>((actualValue) => {
    return isEqual(actualValue, expectedValue);
  }, "different fields");


// my.test.ts

prismaMock?.someThing?.findMany
      .calledWith(
        objectWithTheSameFields({
          where: {
            name: { contains: query },
          },
        })
      )
      .mockResolvedValue([{...}]);