ADDITIONAL SYSTEM INFORMATION :
JUnit 4.13.2, Mockito 5.7.0.

JDK Versions tested: 21, 21.0.1 and 22 ea

A DESCRIPTION OF THE PROBLEM :
Using the Mockito "when" function to mock a function in a test causes a Compile Error, because apperantly "when" is not allowed at that position. The error would be true, if it was the Java Keyboard "when", but since the Testclass includes the import static org.mockito.Mockito.when, the syntax is correct and should not cause an error.

REGRESSION : Last worked in version 17.0.9

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a Testclass with Mockito and a Mockito mock and try to mock a function call, for example.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The Test should run.
ACTUAL -
The test will not run, because "when" is a restricted identifier.

---------- BEGIN SOURCE ----------
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import org.junit.Test;
import org.mockito.Mockito;

public class TestWhen {

@Test
public void test() {
when(mock(Number.class).floatValue()).thenReturn(5f);
}
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Replacing the "when" with "Mockito.when" will work. But that would mean a lot of changes to our existing codebase.

FREQUENCY : always