// create xlStorage test setup
	storage, path, err := newXLStorageTestSetup(t)
	if err != nil {
		t.Fatalf("Unable to create xlStorage test setup, %s", err)
	}

	volName := "testvol"
	fileName := "testfile"
	if err := storage.MakeVol(t.Context(), volName); err != nil {
		t.Fatal(err)
	}

	// 1) Whole-file bitrot check on proper file
	size := int64(4*1024*1024 + 100*1024) // 4.1 MB

        // Test setting timestamp 1 hour ago
        long testTime = System.currentTimeMillis() - 3600000;
        file.setLastModified(testTime);

        long retrievedTime = file.lastModified();
        // Allow for reasonable precision differences
        assertTrue(Math.abs(retrievedTime - testTime) < 10000, "Set timestamp should be approximately correct");
    }

                return 3;
            }
        });

        helper.tryStartOperation("test_op", null);
        assertEquals(3, passedRetries.get());
    }

    /**
     * Creates a testable CoordinatorHelper that overrides tryStartOperation(name,data,retries)
     * to simulate "create always fails" (no OpenSearch), preserving the retry/cleanup dispatch logic.
     */

        assertEquals("Q2", request.getMessages().get(0).getContent());
        assertEquals("Q3", request.getMessages().get(1).getContent());
    }

    // ========== Testable subclass ==========

    @FunctionalInterface
    interface StreamChatCapture {
        void capture(LlmChatRequest request, LlmStreamCallback callback);
    }

		Name: "readme.zip",
	},
	{
		Name:  "readme.notzip",
		Error: ErrFormat,
	},
	{
		Name: "dd.zip",
		File: []ZipTestFile{
			{
				Name:     "filename",
				Content:  []byte("This is a test textfile.\n"),
				Modified: time.Date(2011, 2, 2, 13, 6, 20, 0, time.UTC),
				Mode:     0666,
			},
		},
	},
	{
		// created in windows XP file manager.
		Name: "winxp.zip",
		File: []ZipTestFile{
			{