Package org.kocakosm.pitaya.io

Source Code of org.kocakosm.pitaya.io.LimitReaderTest

/*----------------------------------------------------------------------------*
* This file is part of Pitaya.                                               *
* Copyright (C) 2012-2014 Osman KOCAK <kocakosm@gmail.com>                   *
*                                                                            *
* This program 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.                                                 *
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.       *
*----------------------------------------------------------------------------*/

package org.kocakosm.pitaya.io;

import static org.junit.Assert.*;
import static org.mockito.Mockito.*;

import java.io.IOException;
import java.io.Reader;

import org.junit.Test;

/**
* {@link LimitReader}'s unit tests.
*
* @author Osman KOCAK
*/
public final class LimitReaderTest
{
  private static final String DATA = "Hello World !!!!";

  @Test
  public void testReady() throws IOException
  {
    Reader data = new StringReader(DATA);
    Reader reader = new LimitReader(data, 10);
    assertEquals(data.ready(), reader.ready());
    reader.read(new char[8]);
    assertEquals(data.ready(), reader.ready());
  }

  @Test
  public void testRead() throws IOException
  {
    Reader data = new StringReader(DATA);
    Reader reader = new LimitReader(data, 5);
    for (char c : "Hello".toCharArray()) {
      assertEquals(c, reader.read());
    }
    assertEquals(-1, reader.read());
  }

  @Test
  public void testReadArray() throws IOException
  {
    Reader data = new StringReader(DATA);
    Reader reader = new LimitReader(data, 10);
    char[] buf = new char[5];
    assertEquals(5, reader.read(buf));
    assertArrayEquals("Hello".toCharArray(), buf);

    data = new StringReader(DATA);
    reader = new LimitReader(data, 11);
    buf = new char[15];
    assertEquals(11, reader.read(buf));
    for (int i = 0; i < "Hello World".length(); i++) {
      assertEquals("Hello World".charAt(i), buf[i]);
    }
  }

  @Test
  public void testMarkSupported() throws IOException
  {
    Reader data = new StringReader(DATA);
    Reader reader = new LimitReader(data, 10);
    assertEquals(data.markSupported(), reader.markSupported());
  }

  @Test
  public void testMarkAndReset() throws IOException
  {
    Reader data = new StringReader(DATA);
    Reader reader = new LimitReader(data, 10);
    char[] buf = new char[5];
    reader.mark(100);
    reader.read(buf);
    assertArrayEquals("Hello".toCharArray(), buf);
    reader.reset();
    reader.read(buf);
    assertArrayEquals("Hello".toCharArray(), buf);
  }

  @Test
  public void testSkip() throws IOException
  {
    Reader data = new StringReader(DATA);
    Reader reader = new LimitReader(data, 10);
    assertEquals(10, reader.skip(100));
    assertEquals(0, reader.skip(1));
  }

  @Test
  public void testClose() throws IOException
  {
    Reader data = mock(Reader.class);
    Reader reader = new LimitReader(data, 10);
    reader.close();
    verify(data).close();
  }
}
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