/*
    *  Licensed under the Apache License, Version 2.0 (the "License");
    *  you may not use this file except in compliance with the License.
    *  You may obtain a copy of the License at
    *
    *       http://www.apache.org/licenses/LICENSE-2.0
    *
    *  Unless required by applicable law or agreed to in writing, software
    *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *  under the License.
   */
  
  package org.apache.commons.imaging.common;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.nio.ByteOrder;
  
  import org.apache.commons.imaging.AbstractImagingTest;
  import org.junit.jupiter.api.Test;
  
  public class BinaryFileFunctionsTest extends AbstractImagingTest {
  
      private static final long TARGET_LONG = 0x01020304_05060708L;
  
      @Test
      public void testDoubleToByteConversion() {
          final byte[] bytesLE = ByteConversions.toBytes(1.0, ByteOrder.LITTLE_ENDIAN);
          assertEquals(ByteConversions.toDouble(bytesLE, ByteOrder.LITTLE_ENDIAN), 1.0, 0);
  
          final byte[] bytesBE = ByteConversions.toBytes(1.0, ByteOrder.BIG_ENDIAN);
          assertEquals(ByteConversions.toDouble(bytesBE, ByteOrder.BIG_ENDIAN), 1.0, 0);
      }
  
      @Test
      public void testFloatToByteConversion() {
          final byte[] bytesLE = ByteConversions.toBytes(1.0f, ByteOrder.LITTLE_ENDIAN);
          assertEquals(ByteConversions.toFloat(bytesLE, ByteOrder.LITTLE_ENDIAN), 1.0f, 0f);
  
          final byte[] bytesBE = ByteConversions.toBytes(1.0f, ByteOrder.BIG_ENDIAN);
          assertEquals(ByteConversions.toFloat(bytesBE, ByteOrder.BIG_ENDIAN), 1.0f, 0f);
      }
  
      @Test
      public void testLongToByteConversion() {
          final byte[] bytesLE = ByteConversions.toBytes(TARGET_LONG, ByteOrder.LITTLE_ENDIAN);
          assertEquals(ByteConversions.toLong(bytesLE, ByteOrder.LITTLE_ENDIAN), TARGET_LONG);
  
          final byte[] bytesBE = ByteConversions.toBytes(TARGET_LONG, ByteOrder.BIG_ENDIAN);
          assertEquals(ByteConversions.toLong(bytesBE, ByteOrder.BIG_ENDIAN), TARGET_LONG);
      }
  }