Fix a blindspot in the tests for "cat-file" (and by proxy, the guts of
object-file.c) by testing that when we can't decode a loose object
with zlib we'll emit an error from zlib.c.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
t/t1006-cat-file.sh | 52 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/t/t1006-cat-file.sh b/t/t1006-cat-file.sh
index dc01d7c4a9..4a76ff024d 100755
--- a/t/t1006-cat-file.sh
+++ b/t/t1006-cat-file.sh
@@ -404,6 +404,58 @@ test_expect_success "Size of large broken object is correct when type is large"
test_cmp expect actual
'
+test_expect_success 'cat-file -t and -s on corrupt loose object' '
+ git init --bare corrupt-loose.git &&
+ (
+ cd corrupt-loose.git &&
+
+ # Setup and create the empty blob and its path
+ empty_path=$(git rev-parse --git-path objects/$(test_oid_to_path "$EMPTY_BLOB")) &&
+ git hash-object -w --stdin </dev/null &&
+
+ # Create another blob and its path
+ echo other >other.blob &&
+ other_blob=$(git hash-object -w --stdin <other.blob) &&
+ other_path=$(git rev-parse --git-path objects/$(test_oid_to_path "$other_blob")) &&
+
+ # Before the swap the size is 0
+ cat >out.expect <<-EOF &&
+ 0
+ EOF
+ git cat-file -s "$EMPTY_BLOB" >out.actual 2>err.actual &&
+ test_must_be_empty err.actual &&
+ test_cmp out.expect out.actual &&
+
+ # Swap the two to corrupt the repository
+ mv -v "$other_path" "$empty_path" &&
+ test_must_fail git fsck 2>err.fsck &&
+ grep "hash mismatch" err.fsck &&
+
+ # confirm that cat-file is reading the new swapped-in
+ # blob...
+ cat >out.expect <<-EOF &&
+ blob
+ EOF
+ git cat-file -t "$EMPTY_BLOB" >out.actual 2>err.actual &&
+ test_must_be_empty err.actual &&
+ test_cmp out.expect out.actual &&
+
+ # ... since it has a different size now.
+ cat >out.expect <<-EOF &&
+ 6
+ EOF
+ git cat-file -s "$EMPTY_BLOB" >out.actual 2>err.actual &&
+ test_must_be_empty err.actual &&
+ test_cmp out.expect out.actual &&
+
+ # So far "cat-file" has been happy to spew the found
+ # content out as-is. Try to make it zlib-invalid.
+ mv -v other.blob "$empty_path" &&
+ test_must_fail git fsck 2>err.fsck &&
+ grep "^error: inflate: data stream error (" err.fsck
+ )
+'
+
# Tests for git cat-file --follow-symlinks
test_expect_success 'prep for symlink tests' '
echo_without_newline "$hello_content" >morx &&
--
2.32.0.rc0.406.g73369325f8d
