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tests/TC055-getattr-basic.md

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+# Test Case: getattr Basic Metadata
+
+**Test ID**: TC055-getattr-basic
+**Category**: Vnode Operations
+**Priority**: Critical
+
+## Objective
+
+Verify VOP_GETATTR returns fixture-exact type, mode, ownership, link count,
+size, allocation, block size, inode, and generation for plain and compressed
+regular files.
+
+## Procedure
+
+On separate fresh mounts of vfs/vfs-plain.erofs and vfs/vfs-lz4.erofs:
+
+    ./g3_vfs_probe stat /tmp/repo22-g3/mnt/pager.bin
+    stat -f 'ino=%i mode=%p uid=%u gid=%g nlink=%l size=%z blocks=%b blksize=%k gen=%v type=%HT' \
+      /tmp/repo22-g3/mnt/pager.bin
+    sha256 /tmp/repo22-g3/mnt/pager.bin
+
+For the plain mount also compare the mounted hash with
+fixtures/vfs/source/pager.bin and fixture evidence.
+
+## Expected Results
+
+Both files are regular mode 0644, uid/gid 0, size 21211, block size 4096, with
+nonzero stable NID/generation. Both logical hashes equal the source hash;
+st_blocks records each inode's reported allocated sectors. Record both image
+hashes and per-mount cleanup.