Jan Hackel created GROOVY-11057:
-----------------------------------

             Summary: STC Generic type matching failure
                 Key: GROOVY-11057
                 URL: https://issues.apache.org/jira/browse/GROOVY-11057
             Project: Groovy
          Issue Type: Bug
          Components: Compiler
    Affects Versions: 4.0.12
            Reporter: Jan Hackel


With Groovy version 4.0.12 this code will no longer compile:

 
{code:java}
import groovy.transform.CompileStatic
import org.junit.jupiter.api.Test
import org.mockito.Mockito

@CompileStatic
interface Configuration {
  Map<String, Object> getSettings()
}

@CompileStatic
class GenericMapStubbing {

  @Test
  void stubSettings() {
    def configuration = Mockito.mock(Configuration).tap {
      Mockito.when(it.getSettings()).thenReturn([:])
    }

    assert configuration.settings.isEmpty()
  }
} {code}
Failure message:

 

18: [Static type checking] - Cannot find matching method 
org.mockito.stubbing.OngoingStubbing#thenReturn(java.util.LinkedHashMap<#K, 
#V>). Please check if the declared type is correct and if the method exists.
 @ line 16, column 7.
         Mockito.when(it.getSettings()).thenReturn([:])



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