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package org.junit.validator;
import static java.util.Collections.emptyList;
import static java.util.Collections.singletonList;
import java.util.List;
import org.junit.runners.model.TestClass;
/**
* Validates that a {@link TestClass} is public.
*
* @since 4.12
*/
public class PublicClassValidator implements TestClassValidator {
private static final List<Exception> NO_VALIDATION_ERRORS = emptyList();
/**
* Validate that the specified {@link TestClass} is public.
*
* @param testClass the {@link TestClass} that is validated.
* @return an empty list if the class is public or a list with a single
* exception otherwise.
*/
public List<Exception> validateTestClass(TestClass testClass) {
if (testClass.isPublic()) {
return NO_VALIDATION_ERRORS;
} else {
return singletonList(new Exception("The class "
+ testClass.getName() + " is not public."));
}
}
}
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