Fix unit test

Author: gmshake

src/test/java/org/apache/maven/plugins/checkstyle/CheckstyleViolationCheckMojoTest.java

@@ -20,8 +20,6 @@
 
 import java.io.File;
 import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
 
 import org.apache.maven.model.Build;
 import org.apache.maven.plugin.Mojo;
@@ -144,16 +142,6 @@ public File getFile() {
                 return new File(getBasedir(), "target/classes");
             }
 
-            @Override
-            public List<String> getCompileSourceRoots() {
-                return Collections.emptyList();
-            }
-
-            @Override
-            public List<String> getTestCompileSourceRoots() {
-                return Collections.emptyList();
-            }
-
             public Build getBuild() {
                 return new Build() {
                     private static final long serialVersionUID = -743084937617131258L;
@@ -174,6 +162,5 @@ public String getDirectory() {
                         getBasedir() + "/src/test/plugin-configs/src")); // new File( getBasedir() + "/target" ) );
         setVariableValueToObject(mojo, "inputEncoding", "UTF-8");
         setVariableValueToObject(mojo, "skipExec", Boolean.TRUE);
-        setVariableValueToObject(mojo, "checkstyle.excludeGeneratedSources", Boolean.TRUE);
     }
 }