Can I use PowerMock with Mockito 5 and mock-maker-inline

PowerMock and Mockito Compatibility

PowerMock is designed to extend the capabilities of mocking frameworks like Mockito by allowing the mocking of static methods, final classes, and constructors. However, PowerMock's integration with Mockito is primarily focused on older versions of Mockito. PowerMock version 2.0.0 and above supports Mockito 2.x, but there is limited documentation on its compatibility with Mockito 5.0.0, which uses the `mock-maker-inline` by default[1][5].

Mockito 5 and `mock-maker-inline`

Mockito 5.0.0 introduces the `mock-maker-inline` as the default `MockMaker`, enabling features like mocking final classes and static methods out of the box. This change simplifies the process of mocking complex classes compared to earlier versions where additional configuration or dependencies were needed[9][10].

Using PowerMock with `mock-maker-inline`

When using PowerMock alongside Mockito 5, you might encounter issues due to PowerMock's internal implementation and its interaction with Mockito's `MockMaker`. PowerMock implements its own `MockMaker`, which can lead to conflicts if both PowerMock and Mockito try to use different `MockMaker` implementations simultaneously[1][2].

To use PowerMock with Mockito 5 and `mock-maker-inline`, you would typically need to configure PowerMock to delegate its mocking operations to Mockito's `mock-maker-inline` when necessary. However, this configuration can be complex and might not be fully supported or documented for all scenarios.

Configuration Steps

1. Include Dependencies: Ensure you have the correct versions of PowerMock and Mockito in your project. For PowerMock, use versions like `powermock-api-mockito2` and `powermock-module-junit4`. For Mockito, use version 5.0.0 or later[5][9].

2. Configure PowerMock: You might need to configure PowerMock to work with Mockito's `mock-maker-inline`. This could involve setting up a configuration file to delegate PowerMock's mocking operations to Mockito when using `mock-maker-inline`.

3. Test Setup: Use `@RunWith(PowerMockRunner.class)` and `@PrepareForTest` annotations in your test classes to enable PowerMock functionality.

4. Mocking: Use Mockito for most mocking tasks and PowerMock for specific features like static method mocking when necessary.

Potential Issues

- Incompatibility: PowerMock's own `MockMaker` might conflict with Mockito's `mock-maker-inline`, leading to unpredictable behavior if not properly configured.
- Limited Documentation: There is limited guidance on using PowerMock with Mockito 5 specifically, so you may need to experiment with different configurations.

In summary, while it is technically possible to use PowerMock with Mockito 5 and `mock-maker-inline`, the setup can be complex and may require careful configuration to avoid conflicts between the two frameworks. It's advisable to use Mockito 5's built-in features for most mocking needs and reserve PowerMock for specific scenarios where its unique capabilities are required.