test code v1

2026-08-13 10:44:59 +02:00
commit f3b1165f19
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+# Test Case: Long Symlink Target
+
+**Test ID**: TC039-symlink-long
+
+## Objective
+
+Verify a greater-than-60-byte EROFS symlink target is returned completely and
+follows correctly.
+
+## Fixture
+
+Use `images/flat.erofs`, `source/flat/longlink`, and its nested target file.
+Structured evidence records symlink size 73 and actual layout 2. EROFS does not
+switch to a separate-data-block symlink merely at 60 bytes; that former fixture
+assumption is invalid.
+
+## Procedure
+
+```sh
+test -L "$mnt/longlink"
+readlink /tmp/repo22-g1/source/flat/longlink > /tmp/tc039-source-target
+readlink "$mnt/longlink" > /tmp/tc039-mount-target
+cmp /tmp/tc039-source-target /tmp/tc039-mount-target
+test "$(wc -c < /tmp/tc039-mount-target)" -eq 74
+cmp /tmp/repo22-g1/source/flat/very/long/path/to/a/deeply/nested/deterministic/target/directory/file.txt \
+  "$mnt/longlink"
+sha256 "$mnt/longlink" \
+  /tmp/repo22-g1/source/flat/very/long/path/to/a/deeply/nested/deterministic/target/directory/file.txt
+```
+
+The `wc` count is 73 target bytes plus the output newline.
+
+## Expected Results
+
+- Source and mounted targets match exactly and exceed 60 bytes.
+- The link follows to source-exact data with no truncation; cleanup succeeds.