inversion-of-control

In the literature, there are two different concepts Inversion of control and The principle of inversion of dependencies, whic ... tractions. Abstractions should not depend on details. The details should depend on the abstractions. What is the difference?

When using the principle of "Dependency Inversion", it is recommended to use embedding via the constructor, but ultimately, a ... uch requests everywhere on created instance? After all, then the code becomes practically non-testable (meaning unit testing)