The closest I'm seeing is this example, but it has some issues:

https://github.com/testing-library/angular-testing-library/blob/main/apps/example-app/src/app/examples/22-signal-inputs.component.spec.ts

1. Only model can be updated, which would require us to change our components from input for anything we want to test, which is not ideal
2. Manually interacting with the underlying values like that is testing implementation details
3. The template syntax in render doesn't expose an underlying componentRef to call setInput on

In an ideal world, the template will automatically update when the signal changes, like we'd expect in angular template HTML:

Preferred API:

  it("should render text from a signal", async () => {
    const someSignal = signal("hello");

    await render(
      html`<span data-testid="value">{{ someSignal() }} world</span>`,
      {
        componentProperties: {
          someSignal,
        },
      },
    );

    // Passes
    expect(screen.getByTestId("value")).toHaveTextContent("hello world");

    someSignal.set("updated");

    // Fails
    expect(screen.getByTestId("value")).toHaveTextContent("updated world");
  });