/*
    * Copyright 2016-2022 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.hardware;
   
   import static org.hamcrest.MatcherAssert.assertThat;
   import static org.hamcrest.Matchers.closeTo;
   import static org.hamcrest.Matchers.either;
  import static org.hamcrest.Matchers.greaterThan;
  import static org.hamcrest.Matchers.greaterThanOrEqualTo;
  import static org.hamcrest.Matchers.is;
  
  import java.util.List;
  
  import org.junit.jupiter.api.Test;
  
  import oshi.SystemInfo;
  
  /**
   * Test Power Source
   */
  class PowerSourceTest {
      /**
       * Test power source.
       */
      @Test
      void testPowerSource() {
          SystemInfo si = new SystemInfo();
          List<PowerSource> psArr = si.getHardware().getPowerSources();
          for (PowerSource ps : psArr) {
              assertThat("Power Source's remaining capacity shouldn't be negative", ps.getRemainingCapacityPercent(),
                      is(greaterThanOrEqualTo(0d)));
              double epsilon = 1E-6;
              assertThat(
                      "Power Source's estimated remaining time should be greater than zero or within error margin of -1 or within error margin of -2",
                      ps.getTimeRemainingEstimated(),
                      is(either(greaterThan(0d)).or(closeTo(-1d, epsilon)).or(closeTo(-2d, epsilon))));
          }
      }
  }