package admin_admin_com; import static org.junit.Assert.assertEquals; import java.io.ByteArrayOutputStream; import java.io.PrintStream; import org.junit.After; import org.junit.Before; import org.junit.Test; public class JUnitMyClassTest { private final ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); private final PrintStream oPrintStream = System.out; @Before public void setUpStream() { System.setOut(new PrintStream(outputStream)); } @After public void restoreStream() { System.setOut(oPrintStream); } @Test public void isMyClassTest() { admin_admin_com.MyClass.Double(35.5); assertEquals("Is Double Result", "Result = 35.5", outputStream.toString()); } }