thread.start();
            }

            // Wait for all threads to complete
            for (Thread thread : threads) {
                try {
                    thread.join();
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                    fail("Thread interrupted");
                }
            }

            // Longest sequence of zeros compressed (3 zeros at end vs 1 zero at start)
            assertEquals("2001:db8:0:1::1", method.invoke(null, "2001:0db8:0:1:0:0:0:1"));

            // No compression when all segments are non-zero (just remove leading zeros)
            assertEquals("2001:db8:1:2:3:4:5:6", method.invoke(null, "2001:0db8:0001:0002:0003:0004:0005:0006"));

            // Single zero should not be compressed

        }

        request.getParameterMap().entrySet().stream().forEach(entry -> {
            if (entry.getValue().length > 1) {
                curlRequest.param(entry.getKey(), String.join(",", entry.getValue()));
            } else if (entry.getValue().length == 1) {
                curlRequest.param(entry.getKey(), entry.getValue()[0]);
            }
        });

        assertEquals(1, param.getValues().length);
        assertEquals("onlyValue", param.getValues()[0]);
    }

    @Test
    public void test_constructor_withNullAndNonNullValues() {
        // Test with mix of null and non-null values
        String name = "mixedParam";
        String[] values = { "value1", null, "value3", null };
        RequestParameter param = new RequestParameter(name, values);

            final String expectedExtension = testCase[1];
            assertEquals("Extension for " + mimeType, expectedExtension, generator.getExtensionFromMimeType(mimeType));
        }
    }

    // Test non-image MIME types return empty string
    @Test
    public void test_getExtensionFromMimeType_nonImageTypes() {
        final String[] mimeTypes = { "application/pdf", "application/msword",

            final InputStreamThread it = new InputStreamThread(currentProcess.getInputStream(), commandOutputEncoding, maxOutputLine);
            it.start();

            currentProcess.waitFor();
            it.join(5000);

            if (mt.isTeminated()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Command execution timeout for user: username={}", username);
                }

            assertTrue("Should find custom thread in dump", customThreadFound.get() > 0);

        } finally {
            latch.countDown();
            customThread.join(1000); // Wait up to 1 second for thread to finish
        }
    }

    @Test
    public void test_writeThreadDump_fileContent() throws IOException {

        // Start all threads
        for (Thread thread : threads) {
            thread.start();
        }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            thread.join();
        }

        // Check all providers were created successfully
        for (int i = 0; i < threadCount; i++) {
            assertNull(exceptions[i], "Thread " + i + " threw exception");

        // Execute the real put$start() method
        final JsonResponse<ApiResult> jsonResponse = action.put$start("job-1");

        // Verify: response contains non-null jobLogId
        assertNotNull(jsonResponse);
        final ApiResult apiResult = jsonResponse.getJsonResult();
        assertNotNull(apiResult);
        final String responseJobLogId = extractJobLogId(apiResult);

    @java.lang.annotation.Retention(java.lang.annotation.RetentionPolicy.RUNTIME)
    @jakarta.validation.Constraint(validatedBy = {})
    private @interface ValidCronRequired {
        String message() default "Must be a valid non-blank cron expression";

        Class<?>[] groups() default {};

        Class<? extends jakarta.validation.Payload>[] payload() default {};
    }

    private static class ComposedBean {