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tests/TC000-template.md

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+# Test Case Template
+
+**Test ID**: TC###-brief-name  
+**Category**: [Mount Operations | Filesystem Metadata | Inode Operations | Data Layouts | Compression | Directory Operations | Symlink Operations | Extended Attributes | Multi-Device | VFS Integration | Read-Only Enforcement | VM Integration | Error Handling | Performance & Stress]  
+**Priority**: [Critical | High | Medium | Low]  
+**Regression**: [None | Issue #XXX]
+
+## Objective
+Brief description of what this test validates.
+
+## Preconditions
+- EROFS image requirements (e.g., "Image with LZ4-compressed files")
+- System requirements (e.g., "FreeBSD 13.0+")
+- Test data setup
+
+## Test Steps
+1. Step one with specific commands
+2. Step two with expected intermediate state
+3. ...
+
+## Expected Results
+- Specific expected outcomes
+- Expected output values
+- Expected file contents
+
+## Verification Method
+How to verify the test passed:
+- Command outputs to check
+- Files to inspect
+- Performance metrics (if applicable)
+
+## Cleanup
+Steps to reset the environment after the test.
+
+## Notes
+Any additional considerations or known limitations.