/*
* SonarQube
* Copyright (C) 2009-2017 SonarSource SA
* mailto:info AT sonarsource DOT 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.core.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class LineReaderIteratorTest {
@Rule
public ExpectedException expectedException = ExpectedException.none();
@Test
public void read_lines() {
LineReaderIterator it = new LineReaderIterator(new StringReader("line1\nline2"));
assertThat(it.hasNext()).isTrue();
assertThat(it.next()).isEqualTo("line1");
assertThat(it.hasNext()).isTrue();
assertThat(it.next()).isEqualTo("line2");
assertThat(it.hasNext()).isFalse();
}
@Test
public void ignore_last_newline() {
LineReaderIterator it = new LineReaderIterator(new StringReader("line1\nline2\n"));
assertThat(it.hasNext()).isTrue();
assertThat(it.next()).isEqualTo("line1");
assertThat(it.hasNext()).isTrue();
assertThat(it.next()).isEqualTo("line2");
assertThat(it.hasNext()).isFalse();
}
@Test
public void no_lines() {
LineReaderIterator it = new LineReaderIterator(new StringReader(""));
assertThat(it.hasNext()).isFalse();
}
@Test
public void do_not_wrap_BufferedReader_in_BufferedReader() {
// TODO how to verify that constructor does not build new BufferedReader(BufferedReader) ?
LineReaderIterator it = new LineReaderIterator(new BufferedReader(new StringReader("line")));
assertThat(it.next()).isEqualTo("line");
assertThat(it.hasNext()).isFalse();
}
@Test
public void fail_if_cannot_read() throws IOException {
expectedException.expect(IllegalStateException.class);
expectedException.expectMessage("Fail to read line");
BufferedReader reader = mock(BufferedReader.class);
when(reader.readLine()).thenThrow(new IOException());
LineReaderIterator it = new LineReaderIterator(reader);
it.hasNext();
}
}