code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC 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.openqa.selenium.net;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  import java.io.StringReader;
  import org.junit.jupiter.api.Tag;
  import org.junit.jupiter.api.Test;
  
  @Tag("UnitTests")
  class LinuxEphemeralPortRangeDetectorTest {
  
    @Test
    void decodeEphemeralPorts() {
      String range = "1234 65533";
      EphemeralPortRangeDetector ephemeralEphemeralPortDetector =
          new LinuxEphemeralPortRangeDetector(new StringReader(range));
      assertThat(ephemeralEphemeralPortDetector.getLowestEphemeralPort()).isEqualTo(1234);
      assertThat(ephemeralEphemeralPortDetector.getHighestEphemeralPort()).isEqualTo(65533);
    }
  
    @Test
    void decodeEphemeralPortsWithWhitespaces() {
      String range = "1234         65533";
      EphemeralPortRangeDetector ephemeralEphemeralPortDetector =
          new LinuxEphemeralPortRangeDetector(new StringReader(range));
      assertThat(ephemeralEphemeralPortDetector.getLowestEphemeralPort()).isEqualTo(1234);
      assertThat(ephemeralEphemeralPortDetector.getHighestEphemeralPort()).isEqualTo(65533);
    }
  
    @Test
    void currentValues() {
      LinuxEphemeralPortRangeDetector detector = LinuxEphemeralPortRangeDetector.getInstance();
      assertThat(detector.getLowestEphemeralPort()).isGreaterThan(1024);
      assertThat(detector.getHighestEphemeralPort()).isLessThan(65536);
    }
  }
  