test code v1

tests/TC147-flat-inline-block-bounds.md

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+# Test Case: FLAT_INLINE Metadata-Block Bounds
+
+**Test ID**: TC147-flat-inline-block-bounds
+
+## Objective
+
+Verify a valid inline payload reads exactly and a checksum-valid inline range
+crossing its inode metadata block fails repeatedly with `EINTEGRITY`.
+
+## Fixture
+
+Use `images/inline.erofs`, `images/inline-cross-block.erofs`, and
+`source/inline/inline.txt`. Evidence records the NID/inode offset, patched
+`i_xattr_icount`, inline start at block offset 4068, 31-byte size, valid CRC,
+and both image/source hashes.
+
+## Procedure
+
+Mount `inline.erofs` on a fresh md unit:
+
+```sh
+stat -f 'size=%z blocks=%b' "$mnt/inline.txt"
+cmp /tmp/repo22-g1/source/inline/inline.txt "$mnt/inline.txt"
+sha256 /tmp/repo22-g1/source/inline/inline.txt "$mnt/inline.txt"
+```
+
+Clean it up, then mount `inline-cross-block.erofs` without listing the root:
+
+```sh
+./read_probe expect-error "$mnt/inline.txt" 97
+./read_probe expect-error "$mnt/inline.txt" 97
+set +e
+truss -o /tmp/tc147.truss stat "$mnt/inline.txt"
+rc=$?
+set -e
+printf 'stat_rc=%d\n' "$rc"
+tail -20 /tmp/tc147.truss
+```
+
+Record dmesg delta and clean the second mount/provider.
+
+## Expected Results
+
+- Positive data matches source and reports 8 sectors.
+- Every corrupt lookup/open returns errno 97, never `ENOENT` or stale-vnode
+  errors; no next-block read, panic, dmesg error, or cleanup residue occurs.