org.cactoos.io.OutputTo Java Examples

/**
 * Main can print a simple text.
 * @throws Exception If some problem inside
 */
public void testSimpleCompilation() throws Exception {
    final CompileMojo mojo = new CompileMojo();
    this.temp.create();
    final File src = this.temp.newFolder();
    this.setVariableValueToObject(mojo, "sourceDirectory", src);
    new LengthOf(
        new TeeInput(
            new InputOf(
                "type Pixel:\n  Pixel moveTo(Integer x, Integer y)"
            ),
            new OutputTo(new File(src, "main.eo"))
        )
    ).value();
    final File target = this.temp.newFolder();
    this.setVariableValueToObject(mojo, "targetDirectory", target);
    this.setVariableValueToObject(mojo, "project", new MavenProjectStub());
    mojo.execute();
    MatcherAssert.assertThat(
        new File(target, "Pixel.java").exists(),
        Matchers.is(true)
    );
}
 

/**
 * Body.URL can provide the expected input.
 * @throws Exception If there is some problem inside.
 */
@Test
public void returnsCorrectInputWithUrl() throws Exception {
    try (TempFile file = new TempFile()) {
        final Bytes body = new BytesOf("URL returnsCorrectInput!");
        try (OutputStream outStream =
            new OutputTo(file.value()).stream()) {
            new LengthOf(
                new TeeInput(body, new OutputTo(outStream))
            ).intValue();
        }
        final Body.Url input = new Body.Url(file.value().toUri().toURL());
        MatcherAssert.assertThat(
            "Body content of Body.Url doesn't provide the correct bytes",
            new BytesOf(input).asBytes(),
            new IsEqual<>(body.asBytes())
        );
    }
}
 

/**
 * Body.URL can provide the expected length.
 * @throws Exception If there is some problem inside.
 */
@Test
public void returnsCorrectLengthWithUrl() throws Exception {
    try (TempFile file = new TempFile()) {
        final Bytes body = new BytesOf("URL returnsCorrectLength!");
        try (OutputStream outStream =
            new OutputTo(file.value()).stream()) {
            new LengthOf(
                new TeeInput(body, new OutputTo(outStream))
            ).intValue();
        }
        MatcherAssert.assertThat(
            "Body content of Body.Url doesn't have the correct length",
            new LengthOf(
                new Body.Url(file.value().toUri().toURL())
            ).intValue(),
            new IsEqual<>(body.asBytes().length)
        );
    }
}
 

/**
 * Ctor.
 *
 * @param ipt Input text
 * @param dir Directory to write to
 */
public Program(final Input ipt, final Path dir) {
    this(
        ipt,
        path -> new OutputTo(
            new File(dir.toFile(), path)
        )
    );
}
 

/**
 * Creates Java code that really works.
 * @throws Exception If some problem inside
 */
@Test
public void compilesExecutableJava() throws Exception {
    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    final Program program = new Program(
        new InputOf(
            new JoinedText(
                "\n",
                "object car as Serializable:",
                "  Integer @vin",
                "  String name():",
                "    \"Mercedes-Benz\""
            ).asString()
        ),
        s -> new OutputTo(baos)
    );
    program.compile();
    try (final GroovyClassLoader loader = new GroovyClassLoader()) {
        final Class<?> type = loader.parseClass(
            new GroovyCodeSource(
                new TextOf(baos.toByteArray()).asString(),
                "car", GroovyShell.DEFAULT_CODE_BASE
            )
        );
        MatcherAssert.assertThat(
            type.getMethod("name").invoke(
                type.getConstructor(Integer.class).newInstance(0)
            ),
            Matchers.equalTo("Mercedes-Benz")
        );
    }
}
 

@Override
public ServletOutputStream getOutputStream() throws IOException {
    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    new LengthOf(
        new TeeInput(
            new InputOf(this.response.get().body()),
            new OutputTo(baos)
        )
    ).intValue();
    return new ServletOutputStreamTo(baos);
}