assertExpectedString(sink.getString());
  }

  public void testRead_toString() throws IOException {
    String string = source.read();
    assertExpectedString(string);
  }

  public void testReadFirstLine() throws IOException {
    if (expectedLines.isEmpty()) {
      assertThat(source.readFirstLine()).isNull();
    } else {
      assertThat(source.readFirstLine()).isEqualTo(expectedLines.get(0));
    }
  }

  }

  public void testRead_toString() throws IOException {
    assertThat(source.read()).isEqualTo(STRING);
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

  public void testReadFirstLine() throws IOException {
    TestCharSource lines = new TestCharSource(LINES);
    assertThat(lines.readFirstLine()).isEqualTo("foo");
    assertTrue(lines.wasStreamOpened() && lines.wasStreamClosed());
  }