Jest with Enzyme, why is `toHaveBeenCalled` not triggering in my React Component test?

I'm working on a unit test in a React application that verifies a passed in prop function is being conditionally called based on another props value. I'm utilizing Typescript/Enzyme/Jest in my application and am using a Root wrapper around the component I'm testing to inject the Redux store (and override initial state if desired).

import { mount, ReactWrapper } from "enzyme";
import React from "react";
import Login from "src/components/auth/Login";
import Root from "src/Root";

let wrapped: ReactWrapper;

let defaultProps = {
  signIn: jest.fn(),
  token: null,
};

beforeEach(() => {
  wrapped = mount(
    <Root>
      <Login {...defaultProps} />
    </Root>
  );
});

describe("on mount", () => {
  describe("if no token is supplied to the props", () => {
    it("will call the props.signIn() function", () => {
      expect(defaultProps.signIn).toHaveBeenCalled();
    });
  });
});

When I run the test the toHaveBeenCalled() (as well as toBeCalled(), tried both) are not registering any calls. However, I have supplied a console.log statement that is getting triggered within the same conditional that the signIn() function lives.

import React from 'react';
import JWT from './types';

interface Props {
  signIn: () => Promise<void>;
  token: null | JWT;
}

class Login extends React.Component<Props> {
  /**
   * Sign the user in on mount
   */
  public componentDidMount(): void {
    if (!this.props.token) {
      console.log("GETTING HERE");
      this.props.signIn();
    }
  }

  public render(): JSX.Elemeent {
    // ... More code
  }
}

I've gone through several related posts/articles but all of the different configurations, such as traversing enzyme to get the direct prop or utilizing spyOn, have failed.

The only thing I can figure that's different is my wrapping of the Login component with Root, but considering I can see the console.log being triggered this seems like a complete shot in the dark.

Can anyone tell me what I'm doing wrong here?