/*
    * 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.maven.shared.utils.logging;
  
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.nio.charset.StandardCharsets;
  
  import org.fusesource.jansi.AnsiColors;
  import org.fusesource.jansi.AnsiConsole;
  import org.fusesource.jansi.AnsiMode;
  import org.fusesource.jansi.AnsiPrintStream;
  import org.fusesource.jansi.AnsiType;
  import org.fusesource.jansi.io.AnsiOutputStream;
  import org.junit.Test;
  
  import static org.hamcrest.CoreMatchers.not;
  import static org.hamcrest.CoreMatchers.sameInstance;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assume.assumeNoException;
  
  public class MessageUtilsTest {
      @Test
      public void testSystem() {
          PrintStream currentOut = System.out;
          try {
              MessageUtils.systemInstall();
              assertThat(System.out, not(sameInstance(currentOut)));
          } catch (LinkageError e) {
              assumeNoException("JAnsi not supported for this platform", e);
          } finally {
              try {
                  // uninstall is always necessary due to https://github.com/fusesource/jansi/issues/242
                  // but might throw exceptions
                  MessageUtils.systemUninstall();
              } catch (Throwable t) {
                  // ignore any thrown exception like NPE here
              }
          }
          assertThat(System.out, sameInstance(currentOut));
      }
  
      @Test
      public void testTerminalWidth() {
          AnsiOutputStream.WidthSupplier width = new AnsiOutputStream.WidthSupplier() {
              @Override
              public int getTerminalWidth() {
                  return 33;
              }
          };
          AnsiOutputStream aos = new AnsiOutputStream(
                  new ByteArrayOutputStream(),
                  width,
                  AnsiMode.Default,
                  null,
                  AnsiType.Emulation,
                  AnsiColors.Colors256,
                  StandardCharsets.UTF_8,
                  null,
                  null,
                  false);
          try {
              AnsiConsole.systemInstall();
              AnsiConsole.out = new AnsiPrintStream(aos, true);
              assertEquals(33, MessageUtils.getTerminalWidth());
          } catch (LinkageError e) {
              assumeNoException("JAnsi not supported for this platform", e);
          } finally {
              try {
                  // uninstall is always necessary due to https://github.com/fusesource/jansi/issues/242
                  // but might throw exceptions
                  AnsiConsole.systemUninstall();
              } catch (Throwable t) {
                  // ignore any thrown exception like NPE here
              }
          }
      }
  }