-import static org.junit.Assert.*;
-import static org.hamcrest.CoreMatchers.*;
-import static org.mockito.Matchers.*;
-import static org.mockito.Mockito.*;
-import org.junit.*;
-import org.mockito.*;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.not;
+import static org.hamcrest.CoreMatchers.nullValue;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.fail;
+import static org.mockito.Mockito.mock;