package org.apache.maven.shared.utils.logging;

/*
 * 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.
 */

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 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;

public class MessageUtilsTest
{
    @Test
    public void testSystem()
    {
        PrintStream currentOut = System.out;
        try
        {
            MessageUtils.systemInstall();
            assertThat( System.out, not( sameInstance( currentOut ) ) );
            MessageUtils.systemUninstall();
            assertThat( System.out, sameInstance( currentOut ) );
        }
        finally
        {
            System.setOut( 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 );
        AnsiConsole.systemInstall();
        AnsiConsole.out = new AnsiPrintStream( aos, true );
        assertEquals( 33, MessageUtils.getTerminalWidth() );
        AnsiConsole.systemUninstall();
    }
}
