package org.jastacry.layer;
   
   import static org.junit.Assert.assertEquals;
   
   import java.io.ByteArrayInputStream;
   import java.io.ByteArrayOutputStream;
   import java.io.IOException;
   import java.io.InputStream;
   import java.io.OutputStream;
  
  import org.jastacry.JastacryException;
  import org.jastacry.test.utils.Tooling;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Test of Rotate Layer.
   *
   * @author Kai Kretschmann
   *
   */
  public class TestLayerRotate
  {
      /**
       * Testdata to play with.
       */
      private final String testdata = "The quick brown fox jumps over the lazy dog.";
  
      /**
       * The layer to test.
       */
      private RotateLayer layer = null; // NOPMD by kkretsch on 29.03.18 14:54
  
      /**
       * Shift a small amount.
       */
      private static final String SHIFTSMALL = "2";
  
      /**
       * Shift a wide amount.
       */
      private static final String SHIFTWIDE = "250";
  
      /**
       * Test Before method.
       *
       * @throws Exception
       *             in case of error
       */
      @BeforeEach
      public void setUp() throws Exception
      {
          layer = new RotateLayer();
      }
  
      /**
       * Test After method.
       *
       * @throws Exception
       *             in case of error
       */
      @AfterEach
      public void tearDown() throws Exception
      {
          layer = null;
      }
  
      /**
       * Testcase JastacryException.
       *
       * @throws JastacryException
       *             in case of error
       */
      @Test
      public void testEncDecStream() throws JastacryException
      {
          layer.init(SHIFTSMALL);
          byte[] buf = testdata.getBytes();
          final InputStream isEncode = new ByteArrayInputStream(buf);
          final ByteArrayOutputStream osEncode = new ByteArrayOutputStream();
          layer.encStream(isEncode, osEncode);
          buf = osEncode.toByteArray();
  
          final InputStream isDecode = new ByteArrayInputStream(buf);
          final OutputStream osDecode = new ByteArrayOutputStream();
          layer.decStream(isDecode, osDecode);
          assertEquals("decoding differs", testdata, osDecode.toString());
      }
  
      /**
       * Testcase testEncDecStreamWide.
       *
       * @throws JastacryException
       *             in case of error
       */
      @Test
      public void testEncDecStreamWide() throws JastacryException
     {
         layer.init(SHIFTWIDE);
         byte[] buf = testdata.getBytes();
         final InputStream isEncode = new ByteArrayInputStream(buf);
         final ByteArrayOutputStream osEncode = new ByteArrayOutputStream();
         layer.encStream(isEncode, osEncode);
         buf = osEncode.toByteArray();
 
         final InputStream isDecode = new ByteArrayInputStream(buf);
         final OutputStream osDecode = new ByteArrayOutputStream();
         layer.decStream(isDecode, osDecode);
         assertEquals("decoding differs", testdata, osDecode.toString());
     }
 
     /**
      * Testcase testToString.
      */
     @Test
     public void testToString()
     {
         assertEquals("Layer name mismatch", RotateLayer.LAYERNAME, layer.toString());
     }
 
     /**
      * Testcase unsupported exception.
      * @throws JastacryException on error
      */
     @Test
     // TestLink(externalId = "JAS-9")
     public void testUnsupported() throws JastacryException
     {
         byte[] buf = testdata.getBytes();
         final InputStream isEncode = new ByteArrayInputStream(buf);
         final ByteArrayOutputStream osEncode = new ByteArrayOutputStream();
         Assertions.assertThrows(UnsupportedOperationException.class, () -> {
             layer.encodeAndDecode(isEncode, osEncode);
         });
     }
 
     /**
      * Testcase testEncStream Exceptions.
      *
      * @throws JastacryException
      *             in case of error
      * @throws IOException will be thrown in test
      */
     @Test
     public void testEncStreamException() throws JastacryException, IOException
     {
         Toolingg.html#Tooling">Tooling tool = new Tooling();
         Assertions.assertThrows(JastacryException.class, () -> {
             tool.mockupInputOutputEncStreams(layer);
         });
     }
 
     /**
      * Testcase testEncStream Exceptions.
      *
      * @throws JastacryException
      *             in case of error
      * @throws IOException will be thrown in test
      */
     @Test
     public void testDecStreamException() throws JastacryException, IOException
     {
         Toolingg.html#Tooling">Tooling tool = new Tooling();
         Assertions.assertThrows(JastacryException.class, () -> {
             tool.mockupInputOutputDecStreams(layer);
         });
     }
 
     /**
      * Testcase equals.
      */
     @Test
     public void testEquals()
     {
         RotateLayer l1 = new RotateLayer();
         RotateLayer l2 = new RotateLayer();
         l1.init(SHIFTSMALL);
         l2.init(SHIFTSMALL);
         assertEquals("Layer object equal", true, l1.equals(l2));
     }
 
     /**
      * Testcase not equals.
      */
     @Test
     public void testNotEquals()
     {
         RotateLayer l1 = new RotateLayer();
         RotateLayer l2 = new RotateLayer();
         l1.init(SHIFTSMALL);
         l2.init(SHIFTWIDE);
         assertEquals("Layer object not equal", false, l1.equals(l2));
     }
 
     /**
      * Testcase equals.
      */
     @Test
     public void testEqualsSame()
     {
         RotateLayer l1 = new RotateLayer();
         l1.init(SHIFTSMALL);
         assertEquals("Layer object same", true, l1.equals(l1));
     }
 
     /**
      * Testcase equals.
      */
     @Test
     public void testNotEqualsNull()
     {
         RotateLayer l1 = new RotateLayer();
         Object o = null;
         l1.init(SHIFTSMALL);
         assertEquals("Layer object null unequal", false, l1.equals(o));
     }
 
     /**
      * Testcase equals.
      */
     @Test
     public void testNotEqualsWrongclass()
     {
         RotateLayer l1 = new RotateLayer();
         Object o = new Object();
         l1.init(SHIFTSMALL);
         assertEquals("Layer object type unequal", false, l1.equals(o));
     }
 
     /**
      * Testcase hashcode.
      */
     @Test
     public void testHashcode()
     {
         RotateLayer l1 = new RotateLayer();
         RotateLayer l2 = new RotateLayer();
         l1.init(SHIFTSMALL);
         l2.init(SHIFTSMALL);
         assertEquals("Layer hash equal", l1.hashCode(), l2.hashCode());
     }
 
 }