### Question:
AbstractPinFeature implements PinFeature { public AbstractPinFeature(Pin pin) { this.pin = pin; } AbstractPinFeature(Pin pin); Pin getPin(); boolean isActivatedFeature(); void activate(); void blockPin(); boolean isBlocking(); void unblockPin(); void setup(); void teardown(); boolean isSetup(); @Override String toString();  }### Answer:
@Test public void testAbstractPinFeature() { Pin pin = new Pin("Testpin", 0, "A", 0); MockedDigitalOutput output = new MockedDigitalOutput(pin); pin.addFeature(output); MockedPinFeature1 feature1 = new MockedPinFeature1(pin); pin.addFeature(feature1); TestCase.assertEquals(pin, output.getPin()); TestCase.assertFalse(output.isActivatedFeature()); TestCase.assertFalse(feature1.isActivatedFeature()); TestCase.assertFalse(output.isSetup()); pin.activateFeature(DigitalOutput.class); TestCase.assertTrue(output.isSetup()); TestCase.assertFalse(feature1.isSetup()); TestCase.assertEquals(pin, output.getPin()); TestCase.assertTrue(output.isActivatedFeature()); TestCase.assertFalse(feature1.isActivatedFeature()); pin.activateFeature(MockedPinFeature1.class); TestCase.assertFalse(output.isSetup()); TestCase.assertTrue(feature1.isSetup()); TestCase.assertEquals(pin, output.getPin()); TestCase.assertFalse(output.isActivatedFeature()); TestCase.assertTrue(feature1.isActivatedFeature()); output.activate(); TestCase.assertTrue(output.isSetup()); TestCase.assertFalse(feature1.isSetup()); TestCase.assertEquals(pin, output.getPin()); TestCase.assertTrue(output.isActivatedFeature()); TestCase.assertFalse(feature1.isActivatedFeature()); output.blockPin(); TestCase.assertTrue(output.isBlocking()); output.unblockPin(); TestCase.assertFalse(output.isBlocking()); }