/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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.
   */
  package org.apache.commons.imaging.formats.png;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.junit.jupiter.api.Test;
  
  public class PhysicalScaleTest {
      private static final double delta = 0.01;
  
      @Test
      public void testCreateFromMeters() {
          final PhysicalScale physicalScale = PhysicalScale.createFromMeters(1.0, 2.0);
  
          assertTrue(physicalScale.isInMeters());
          assertFalse(physicalScale.isInRadians());
          assertEquals(physicalScale.getHorizontalUnitsPerPixel(), 1.0, delta);
          assertEquals(physicalScale.getVerticalUnitsPerPixel(), 2.0, delta);
      }
  
      @Test
      public void testCreateFromRadians() {
          final PhysicalScale physicalScale = PhysicalScale.createFromRadians(2.0, 1.0);
  
          assertFalse(physicalScale.isInMeters());
          assertTrue(physicalScale.isInRadians());
          assertEquals(physicalScale.getHorizontalUnitsPerPixel(), 2.0, delta);
          assertEquals(physicalScale.getVerticalUnitsPerPixel(), 1.0, delta);
      }
  }