A question on test file placement

With the SFC approach, would you still favor having the test specs directly adjacent to the code? Or with the case of using Jest, for example, would you place them within a `__tests__` directory?

```
src/app/
app.component.ts
app.component.spec.ts
```
OR
```
src/app/
__tests__/
app.component.spec.ts
app.component.ts
```