No generated test cases for string concatenation

[mmvpm]

Description

No tests were generated for the class:

public class Example {
    public void bad(String data) {
        String result = data + ";";
    }
}

To Reproduce

Steps to reproduce the behavior:

1. Create a new Maven project
2. Paste the code above there
3. Disable fizzing (symbolic execution 100%)
4. Run test generation with Do not mock, 60 sec

Expected behavior

Tests are supposed to be generated.

Actual behavior

Additional context

After the scenario above:

1. Run test generation with Mock everything outside the class and Mock static methods
2. Tests are generated successfully
3. Again run generation with Do not mock
4. Now tests are generated successfully too

Possible reason

ApplicationContext.staticsMockingIsConfigured affects UtMock, but shouldn't

Related code

• org/utbot/engine/Traverser.kt:1421
• org/utbot/engine/Mocks.kt:233
• org/utbot/engine/Mocks.kt:240

[mmvpm]

@EgorkaKulikov pls fix!!!