}
        return Optional.empty();
    }

    @Override
    public void warnAboutDeprecatedOptions(ParserRequest request, Consumer<String> printWriter) {
        if (cliManager.getUsedDeprecatedOptions().isEmpty()) {
            return;
        }
        printWriter.accept("Detected deprecated option use in " + source);
        for (Option option : cliManager.getUsedDeprecatedOptions()) {

        assertEquals("test", o2);
    }

    @Test
    public void testLoadSave() throws IOException {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        pw.println("# ");
        pw.println("# The Main  ");
        pw.println("# ");
        pw.println("# Comment ");
        pw.println("# ");
        pw.println("");

    // Check that we can find a resource if it is visible to the context class
    // loader, even if it is not visible to the loader of the Resources class.

    File tempFile = createTempFile();
    PrintWriter writer = new PrintWriter(tempFile, "UTF-8");
    writer.println("rud a chur ar an méar fhada");
    writer.close();

    // First check that we can't find it without setting the context loader.

  public void testLineReading() throws IOException {
    File temp = createTempFile();
    assertThat(Files.readFirstLine(temp, UTF_8)).isNull();
    assertTrue(Files.readLines(temp, UTF_8).isEmpty());

    PrintWriter w = new PrintWriter(Files.newWriter(temp, UTF_8));
    w.println("hello");
    w.println("");
    w.println(" world  ");
    w.println("");
    w.close();

    assertEquals("hello", Files.readFirstLine(temp, UTF_8));

            Path logFile = context.cwd.resolve(context.options().logFile().get());
            try {
                PrintWriter printWriter = new PrintWriter(Files.newBufferedWriter(logFile), true);
                context.closeables.add(printWriter);
                return printWriter::println;
            } catch (IOException e) {
                throw new MavenException("Unable to redirect logging to " + logFile, e);

  public void testLineReading() throws IOException {
    File temp = createTempFile();
    assertThat(Files.readFirstLine(temp, UTF_8)).isNull();
    assertTrue(Files.readLines(temp, UTF_8).isEmpty());

    PrintWriter w = new PrintWriter(Files.newWriter(temp, UTF_8));
    w.println("hello");
    w.println("");
    w.println(" world  ");
    w.println("");
    w.close();

    assertEquals("hello", Files.readFirstLine(temp, UTF_8));

    ArbitraryInstances.get(PrintStream.class).println("test");
    ArbitraryInstances.get(PrintWriter.class).println("test");
    assertThat(ArbitraryInstances.get(File.class)).isNotNull();
    assertFreshInstanceReturned(
        ByteArrayOutputStream.class, OutputStream.class,
        Writer.class, StringWriter.class,
        PrintStream.class, PrintWriter.class);
    assertEquals(ByteSource.empty(), ArbitraryInstances.get(ByteSource.class));

    ArbitraryInstances.get(PrintStream.class).println("test");
    ArbitraryInstances.get(PrintWriter.class).println("test");
    assertThat(ArbitraryInstances.get(File.class)).isNotNull();
    assertFreshInstanceReturned(
        ByteArrayOutputStream.class, OutputStream.class,
        Writer.class, StringWriter.class,
        PrintStream.class, PrintWriter.class);
    assertEquals(ByteSource.empty(), ArbitraryInstances.get(ByteSource.class));

                buf.append(t.getClass().getName());
            } else {
                buf.append(t.getMessage());
            }
            try (final StringWriter sw = new StringWriter(); final PrintWriter pw = new PrintWriter(sw)) {
                t.printStackTrace(pw);
                pw.flush();
                buf.append(" [ ").append(sw.toString()).append(" ]");
            } catch (final IOException e) {