package mockit;
   
   import static org.junit.jupiter.api.Assertions.assertEquals;
   import static org.junit.jupiter.api.Assertions.assertTrue;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   
   import java.io.StringReader;
   import java.nio.CharBuffer;
  
  import org.junit.jupiter.api.AfterAll;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.MethodOrderer.MethodName;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.TestMethodOrder;
  
  /**
   * The Class FakingBaseTypesTest.
   */
  @TestMethodOrder(MethodName.class)
  final class FakingBaseTypesTest {
  
      /**
       * The Class BeforeClassBaseAction.
       */
      static class BeforeClassBaseAction {
          /**
           * Perform.
           *
           * @return the int
           */
          protected int perform() {
              return -1;
          }
      }
  
      /**
       * The Class BeforeClassAction.
       */
      static class BeforeClassAction extends BeforeClassBaseAction {
          @Override
          protected int perform() {
              return 12;
          }
      }
  
      /**
       * Apply fake for all tests.
       *
       * @param <T>
       *            the generic type
       */
      @BeforeAll
      static <T extends BeforeClassBaseAction> void applyFakeForAllTests() {
          new MockUp<T>() {
              @Mock
              int perform() {
                  return 34;
              }
          };
      }
  
      /**
       * Verify fake for all tests is in effect.
       */
      @AfterAll
      static void verifyFakeForAllTestsIsInEffect() {
          int i1 = new BeforeClassAction().perform();
          int i2 = new BeforeClassBaseAction().perform();
  
          assertEquals(34, i1);
          assertEquals(34, i2);
      }
  
      /**
       * The Interface IBeforeAction.
       */
      public interface IBeforeAction {
          /**
           * Perform.
           *
           * @return the int
           */
          @SuppressWarnings("unused")
          int perform();
      }
  
      /**
       * The Class BeforeAction.
       */
      static class BeforeAction implements IBeforeAction {
          @Override
          public int perform() {
              return 123;
          }
      }
  
     /**
      * Apply fake for each test.
      *
      * @param <T>
      *            the generic type
      */
     @BeforeEach
     <T extends IBeforeAction> void applyFakeForEachTest() {
         new MockUp<T>() {
             @Mock
             int perform() {
                 return 56;
             }
         };
     }
 
     /**
      * Verify fake for each test is in effect.
      */
     @AfterEach
     void verifyFakeForEachTestIsInEffect() {
         int i = new BeforeAction().perform();
         assertEquals(56, i);
     }
 
     /**
      * The Interface IAction.
      */
     public interface IAction {
 
         /**
          * Perform.
          *
          * @param i
          *            the i
          *
          * @return the int
          */
         int perform(int i);
 
         /**
          * Not to be faked.
          *
          * @return true, if successful
          */
         boolean notToBeFaked();
     }
 
     /**
      * The Class ActionImpl1.
      */
     public static class ActionImpl1 implements IAction {
         @Override
         public int perform(int i) {
             return i - 1;
         }
 
         @Override
         public boolean notToBeFaked() {
             return true;
         }
     }
 
     /**
      * The Class ActionImpl2.
      */
     static final class ActionImpl2 implements IAction {
         @Override
         public int perform(int i) {
             return i - 2;
         }
 
         @Override
         public boolean notToBeFaked() {
             return true;
         }
     }
 
     /** The action I. */
     IAction actionI;
 
     /**
      * Test 3 fake interface implementation classes using anonymous fake.
      *
      * @param <T>
      *            the generic type
      */
     @Test
     <T extends IAction> void test3_fakeInterfaceImplementationClassesUsingAnonymousFake() {
         actionI = new ActionImpl1();
 
         new MockUp<T>() {
             @Mock
             int perform(int i) {
                 return i + 1;
             }
         };
 
         assertEquals(2, actionI.perform(1));
         assertTrue(actionI.notToBeFaked());
 
         ActionImpl2 impl2 = new ActionImpl2();
         assertEquals(3, impl2.perform(2));
         assertTrue(impl2.notToBeFaked());
     }
 
     /**
      * The Interface TestInterface.
      */
     public interface TestInterface {
         /**
          * Gets the data.
          *
          * @return the data
          */
         String getData();
     }
 
     /**
      * The Class FakeTestInterface.
      *
      * @param <T>
      *            the generic type
      */
     public static final class FakeTestInterface<T extends TestInterface> extends MockUp<T> {
 
         /**
          * Gets the data.
          *
          * @param inv
          *            the inv
          *
          * @return the data
          */
         @Mock
         public String getData(Invocation inv) {
             return "faked" + inv.proceed();
         }
     }
 
     /**
      * Fake all classes implementing an interface using named fake with invocation parameter.
      */
     @Test
     void fakeAllClassesImplementingAnInterfaceUsingNamedFakeWithInvocationParameter() {
         TestInterface impl1 = new TestInterface() {
             @Override
             public String getData() {
                 return "1";
             }
         };
         TestInterface impl2 = new TestInterface() {
             @Override
             public String getData() {
                 return "2";
             }
         };
         new FakeTestInterface();
 
         String faked1 = impl1.getData();
         String faked2 = impl2.getData();
 
         assertEquals("faked1", faked1);
         assertEquals("faked2", faked2);
     }
 
     /**
      * The Class BaseAction.
      */
     public abstract static class BaseAction {
 
         /**
          * Perform.
          *
          * @param i
          *            the i
          *
          * @return the int
          */
         protected abstract int perform(int i);
 
         /**
          * To be faked as well.
          *
          * @return the int
          */
         public int toBeFakedAsWell() {
             return -1;
         }
 
         /**
          * Not to be faked.
          *
          * @return the int
          */
         int notToBeFaked() {
             return 1;
         }
     }
 
     /**
      * The Class ConcreteAction1.
      */
     static final class ConcreteAction1 extends BaseAction {
         @Override
         public int perform(int i) {
             return i - 1;
         }
     }
 
     /**
      * The Class ConcreteAction2.
      */
     static class ConcreteAction2 extends BaseAction {
         @Override
         protected int perform(int i) {
             return i - 2;
         }
 
         @Override
         public int toBeFakedAsWell() {
             return super.toBeFakedAsWell() - 1;
         }
 
         @Override
         int notToBeFaked() {
             return super.notToBeFaked() + 1;
         }
     }
 
     /**
      * The Class ConcreteAction3.
      */
     static class ConcreteAction3 extends ConcreteAction2 {
         @Override
         public int perform(int i) {
             return i - 3;
         }
 
         @Override
         public int toBeFakedAsWell() {
             return -3;
         }
 
         @Override
         final int notToBeFaked() {
             return 3;
         }
     }
 
     /** The action B. */
     BaseAction actionB;
 
     /**
      * Test 4 fake concrete subclasses using anonymous fake.
      *
      * @param <T>
      *            the generic type
      */
     @Test
     <T extends BaseAction> void test4_fakeConcreteSubclassesUsingAnonymousFake() {
         actionB = new ConcreteAction1();
 
         new MockUp<T>() {
             @Mock
             int perform(int i) {
                 return i + 1;
             }
 
             @Mock
             int toBeFakedAsWell() {
                 return 123;
             }
         };
 
         assertEquals(2, actionB.perform(1));
         assertEquals(123, actionB.toBeFakedAsWell());
         assertEquals(1, actionB.notToBeFaked());
 
         ConcreteAction2 action2 = new ConcreteAction2();
         assertEquals(3, action2.perform(2));
         assertEquals(123, action2.toBeFakedAsWell());
         assertEquals(2, action2.notToBeFaked());
 
         ConcreteAction3 action3 = new ConcreteAction3();
         assertEquals(4, action3.perform(3));
         assertEquals(123, action3.toBeFakedAsWell());
         assertEquals(3, action3.notToBeFaked());
     }
 
     /**
      * Check implementation classes are no longer faked.
      */
     @AfterEach
     void checkImplementationClassesAreNoLongerFaked() {
         if (actionI != null) {
             assertEquals(-1, actionI.perform(0));
         }
 
         assertEquals(-2, new ActionImpl2().perform(0));
 
         if (actionB != null) {
             assertEquals(-1, actionB.perform(0));
         }
 
         assertEquals(-2, new ConcreteAction2().perform(0));
         assertEquals(-3, new ConcreteAction3().perform(0));
     }
 
     /**
      * The Class FakeInterface.
      *
      * @param <T>
      *            the generic type
      */
     static final class FakeInterface<T extends IAction> extends MockUp<T> {
 
         /**
          * Perform.
          *
          * @param i
          *            the i
          *
          * @return the int
          */
         @Mock
         int perform(int i) {
             return i + 2;
         }
     }
 
     /**
      * Test 5 fake interface implementation classes using named fake.
      */
     @Test
     void test5_fakeInterfaceImplementationClassesUsingNamedFake() {
         new FakeInterface();
 
         actionI = new ActionImpl1();
         assertEquals(3, actionI.perform(1));
         assertEquals(4, new ActionImpl2().perform(2));
     }
 
     /**
      * The Class FakeBaseClass.
      *
      * @param <T>
      *            the generic type
      */
     static final class FakeBaseClass<T extends BaseAction> extends MockUp<T> {
 
         /**
          * Perform.
          *
          * @param i
          *            the i
          *
          * @return the int
          */
         @Mock
         int perform(int i) {
             return i + 3;
         }
     }
 
     /**
      * Test 6 fake concrete subclasses using named fake.
      */
     @Test
     void test6_fakeConcreteSubclassesUsingNamedFake() {
         new FakeBaseClass();
 
         actionB = new ConcreteAction1();
         assertEquals(4, actionB.perform(1));
         assertEquals(5, new ConcreteAction2().perform(2));
         assertEquals(6, new ConcreteAction3().perform(3));
     }
 
     /**
      * The Interface GenericIAction.
      *
      * @param <N>
      *            the number type
      */
     interface GenericIAction<N extends Number> {
         /**
          * Perform.
          *
          * @param n
          *            the n
          *
          * @return the n
          */
         N perform(N n);
     }
 
     /**
      * Test 7 fake implementations of generic interface.
      *
      * @param <M>
      *            the generic type
      */
     @Test
     <M extends GenericIAction<Number>> void test7_fakeImplementationsOfGenericInterface() {
         GenericIAction<Number> actionNumber = new GenericIAction<Number>() {
             @Override
             public Number perform(Number n) {
                 return n.intValue() + 1;
             }
         };
 
         GenericIAction<Integer> actionInt = new GenericIAction<Integer>() {
             @Override
             public Integer perform(Integer n) {
                 return n + 1;
             }
         };
 
         GenericIAction<Long> actionL = new GenericIAction<Long>() {
             @Override
             public Long perform(Long n) {
                 return n + 2;
             }
         };
 
         new MockUp<M>() {
             @Mock
             Number perform(Number n) {
                 return n.intValue() - 1;
             }
         };
 
         Number n = actionNumber.perform(1);
         assertEquals(0, n); // mocked
 
         int i = actionInt.perform(2);
         assertEquals(3, i); // not mocked
 
         long l = actionL.perform(3L);
         assertEquals(5, l); // not mocked
     }
 
     /**
      * Test 8 exclude JRE classes from faking for safety.
      *
      * @param <R>
      *            the generic type
      *
      * @throws Exception
      *             the exception
      */
     @Test
     <R extends Readable> void test8_excludeJREClassesFromFakingForSafety() throws Exception {
         new MockUp<R>() {
             @Mock
             int read(CharBuffer cb) {
                 return 123;
             }
         };
 
         CharBuffer buf = CharBuffer.allocate(10);
         int r1 = new Readable() {
             @Override
             public int read(@NonNull CharBuffer cb) {
                 return 1;
             }
         }.read(buf);
         assertEquals(123, r1);
 
         int r2 = new StringReader("test").read(buf);
         assertEquals(4, r2);
     }
 }