DirectoryProperty generatedJavadocDirectory = project.getObjects().directoryProperty();
            generatedJavadocDirectory.set(layout.getBuildDirectory().dir("javadoc"));
            task.getOutputs().dir(generatedJavadocDirectory);
            task.getExtensions().getExtraProperties().set("destinationDirectory", generatedJavadocDirectory);
            // TODO: This breaks the provider

            DirectoryProperty flattenedAsciidocDirectory = project.getObjects().directoryProperty();
            flattenedAsciidocDirectory.set(extension.getUserManual().getStagingRoot().dir("raw"));
            task.getOutputs().dir(flattenedAsciidocDirectory);
            task.getExtensions().getExtraProperties().set("destinationDirectory", flattenedAsciidocDirectory);
            task.into(flattenedAsciidocDirectory);
        });

        assertEquals("c", item1.getOutput());

        OptionalEntity<CharMappingItem> result2 = charMappingFile.get(2L);
        assertTrue(result2.isPresent());
        CharMappingItem item2 = result2.get();
        assertEquals(2L, item2.getId());
        assertArrayEquals(new String[] { "d", "e" }, item2.getInputs());
        assertEquals("f", item2.getOutput());

        assertEquals(2, callbackResults.size());
        assertEquals("integration test", callbackResults.get(0));
        assertEquals("second line", callbackResults.get(1));

        String output = thread.getOutput();
        assertTrue(output.contains("integration test"));
        assertTrue(output.contains("second line"));
    }

    @Test
    public void test_defaultBufferSizeConstant() throws IOException {

        assertEquals("line1 line2", item.getOutput());
    }

    @Test
    public void test_constructor_withNullOutput() {
        // Test with null output
        String[] inputs = { "input" };
        CharMappingItem item = new CharMappingItem(1L, inputs, null);

        assertNull(item.getOutput());
    }

    @Test
    public void test_constructor_withUnsortedInputs() {

            this.output = output;
        }

        @Override
        public void start() {
        }

        @Override
        public String getOutput() {
            return output;
        }
    }

    private static class TestSystemHelper extends SystemHelper {
        File tempFile;

        @Override

        }

        @Override
        public void run() {
            // Override run to do nothing in test
        }

        @Override
        public String getOutput() {
            return output;
        }
    }

    private static class TestServletContext implements ServletContext {
        File parentFile = new File("/test/webapp");

        @Override

        // Custom join method to avoid overriding final Thread.join()
        public void waitForCompletion(long millis) {
            // Mock implementation
        }

        @Override
        public String getOutput() {
            return output;
        }
    }

    // Mock Process implementation
    private class MockProcess extends Process {
        private final int exitValue;