/*
    * Copyright © 2016 Greg Chabala
    *
    * This file is part of brick-control-lab.
    *
    * brick-control-lab is free software: you can redistribute it and/or modify
    * it under the terms of the GNU Lesser General Public License as
    * published by the Free Software Foundation, either version 3 of the
    * License, or (at your option) any later version.
   *
   * brick-control-lab is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with brick-control-lab.  If not, see http://www.gnu.org/licenses/.
   */
  package org.chabala.brick.controllab;
  
  import org.junit.Test;
  
  import java.util.EnumSet;
  
  import static org.hamcrest.Matchers.arrayWithSize;
  import static org.hamcrest.Matchers.is;
  import static org.junit.Assert.*;
  
  /**
   * Test the encoding and decoding methods of {@link OutputId}.
   */
  public class OutputIdTest {
  
      @Test
      public void testAllOutputSetEncodesByteWithAllBitsSet() throws Exception {
          assertThat(OutputId.encodeSetToByte(OutputId.ALL), is((byte) 0b11111111));
      }
  
      @Test
      public void testOutputAEncodesByteWithLowBitSet() throws Exception {
          assertThat(OutputId.encodeSetToByte(EnumSet.of(OutputId.A)), is((byte) 0b00000001));
      }
  
      @Test
      public void testOutputHEncodesByteWithHighBitSet() throws Exception {
          assertThat(OutputId.encodeSetToByte(EnumSet.of(OutputId.H)), is((byte) 0b10000000));
      }
  
      @Test
      public void testByteWithAllBitsSetDecodesToAllOutputs() throws Exception {
          assertThat(OutputId.decodeByteToSet((byte) 0b11111111), is(OutputId.ALL));
      }
  
      @Test
      public void testByteWithLowBitSetDecodesToOutputA() throws Exception {
          assertThat(OutputId.decodeByteToSet((byte) 0b00000001), is(EnumSet.of(OutputId.A)));
      }
  
      @Test
      public void testByteWithEvenBitsSetDecodesToOutputsBDFH() throws Exception {
          assertThat(OutputId.decodeByteToSet((byte) 0b10101010), is(EnumSet.of(OutputId.B, OutputId.D, OutputId.F, OutputId.H)));
      }
  
      @Test
      public void testByteWithHighBitSetDecodesToOutputH() throws Exception {
          assertThat(OutputId.decodeByteToSet((byte) 0b10000000), is(EnumSet.of(OutputId.H)));
      }
  
      @Test
      public void testThereAreEightOutputs() throws Exception {
          assertThat(OutputId.values(), arrayWithSize(8));
      }
  }