git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCH v2 03/10] t1450: make hash size independent

From
brian m. carlson <sandals@crustytoothpaste.net>
Date
Jun 16, 2019, 18:53 UTC
Message-ID
<20190616185330.549436-4-sandals@crustytoothpaste.net>
In-Reply-To
<20190616185330.549436-1-sandals@crustytoothpaste.net>

Replace several hard-coded full and partial object IDs with variables or computed values. Create junk data to stuff inside an invalid tree that can be either 20 or 32 bytes long. Compute a binary all-zeros object ID instead of hard-coding a 20-byte length.

Additionally, compute various object IDs by using test_oid and $EMPTY_BLOB so that this test works with multiple hash algorithms.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 t/t1450-fsck.sh | 41 +++++++++++++++++++++++++----------------
 1 file changed, 25 insertions(+), 16 deletions(-)
diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh
index 0f268a3664..b36e0528d0 100755
--- a/t/t1450-fsck.sh
+++ b/t/t1450-fsck.sh
@@ -9,6 +9,7 @@ test_description='git fsck random collection of tests
 . ./test-lib.sh
 
 test_expect_success setup '
+	test_oid_init &&
 	git config gc.auto 0 &&
 	git config i18n.commitencoding ISO-8859-1 &&
 	test_commit A fileA one &&
@@ -54,8 +55,8 @@ test_expect_success 'setup: helpers for corruption tests' '
 
 test_expect_success 'object with bad sha1' '
 	sha=$(echo blob | git hash-object -w --stdin) &&
-	old=$(echo $sha | sed "s+^..+&/+") &&
-	new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
+	old=$(test_oid_to_path "$sha") &&
+	new=$(dirname $old)/$(test_oid ff_2) &&
 	sha="$(dirname $new)$(basename $new)" &&
 	mv .git/objects/$old .git/objects/$new &&
 	test_when_finished "remove_object $sha" &&
@@ -84,7 +85,7 @@ test_expect_success 'branch pointing to non-commit' '
 test_expect_success 'HEAD link pointing at a funny object' '
 	test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
 	mv .git/HEAD .git/SAVED_HEAD &&
-	echo 0000000000000000000000000000000000000000 >.git/HEAD &&
+	echo $ZERO_OID >.git/HEAD &&
 	# avoid corrupt/broken HEAD from interfering with repo discovery
 	test_must_fail env GIT_DIR=.git git fsck 2>out &&
 	cat out &&
@@ -244,10 +245,16 @@ test_expect_success 'tree object with duplicate entries' '
 '
 
 test_expect_success 'unparseable tree object' '
+	test_oid_cache <<-\EOF &&
+	junk sha1:twenty-bytes-of-junk
+	junk sha256:twenty-bytes-of-junk-twelve-more
+	EOF
+
 	test_when_finished "git update-ref -d refs/heads/wrong" &&
 	test_when_finished "remove_object \$tree_sha1" &&
 	test_when_finished "remove_object \$commit_sha1" &&
-	tree_sha1=$(printf "100644 \0twenty-bytes-of-junk" | git hash-object -t tree --stdin -w --literally) &&
+	junk=$(test_oid junk) &&
+	tree_sha1=$(printf "100644 \0$junk" | git hash-object -t tree --stdin -w --literally) &&
 	commit_sha1=$(git commit-tree $tree_sha1) &&
 	git update-ref refs/heads/wrong $commit_sha1 &&
 	test_must_fail git fsck 2>out &&
@@ -275,8 +282,9 @@ test_expect_success 'tree entry with type mismatch' '
 '
 
 test_expect_success 'tag pointing to nonexistent' '
-	cat >invalid-tag <<-\EOF &&
-	object ffffffffffffffffffffffffffffffffffffffff
+	badoid=$(test_oid deadbeef) &&
+	cat >invalid-tag <<-EOF &&
+	object $badoid
 	type commit
 	tag invalid
 	tagger T A Gger <tagger@example.com> 1234567890 -0000
@@ -386,8 +394,8 @@ test_expect_success 'rev-list --verify-objects' '
 
 test_expect_success 'rev-list --verify-objects with bad sha1' '
 	sha=$(echo blob | git hash-object -w --stdin) &&
-	old=$(echo $sha | sed "s+^..+&/+") &&
-	new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
+	old=$(test_oid_to_path $sha) &&
+	new=$(dirname $old)/$(test_oid ff_2) &&
 	sha="$(dirname $new)$(basename $new)" &&
 	mv .git/objects/$old .git/objects/$new &&
 	test_when_finished "remove_object $sha" &&
@@ -402,7 +410,7 @@ test_expect_success 'rev-list --verify-objects with bad sha1' '
 
 	test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
 	cat out &&
-	test_i18ngrep -q "error: hash mismatch 63ffffffffffffffffffffffffffffffffffffff" out
+	test_i18ngrep -q "error: hash mismatch $(dirname $new)$(test_oid ff_2)" out
 '
 
 test_expect_success 'force fsck to ignore double author' '
@@ -417,13 +425,12 @@ test_expect_success 'force fsck to ignore double author' '
 '
 
 _bz='\0'
-_bz5="$_bz$_bz$_bz$_bz$_bz"
-_bz20="$_bz5$_bz5$_bz5$_bz5"
+_bzoid=$(printf $ZERO_OID | sed -e 's/00/\\0/g')
 
 test_expect_success 'fsck notices blob entry pointing to null sha1' '
 	(git init null-blob &&
 	 cd null-blob &&
-	 sha=$(printf "100644 file$_bz$_bz20" |
+	 sha=$(printf "100644 file$_bz$_bzoid" |
 	       git hash-object -w --stdin -t tree) &&
 	  git fsck 2>out &&
 	  cat out &&
@@ -434,7 +441,7 @@ test_expect_success 'fsck notices blob entry pointing to null sha1' '
 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
 	(git init null-commit &&
 	 cd null-commit &&
-	 sha=$(printf "160000 submodule$_bz$_bz20" |
+	 sha=$(printf "160000 submodule$_bz$_bzoid" |
 	       git hash-object -w --stdin -t tree) &&
 	  git fsck 2>out &&
 	  cat out &&
@@ -586,7 +593,7 @@ test_expect_success 'fsck --connectivity-only' '
 		# its type. That lets us see that --connectivity-only is
 		# not actually looking at the contents, but leaves it
 		# free to examine the type if it chooses.
-		empty=.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 &&
+		empty=.git/objects/$(test_oid_to_path $EMPTY_BLOB) &&
 		blob=$(echo unrelated | git hash-object -w --stdin) &&
 		mv -f $(sha1_file $blob) $empty &&
 
@@ -631,10 +638,12 @@ test_expect_success 'fsck --name-objects' '
 
 test_expect_success 'alternate objects are correctly blamed' '
 	test_when_finished "rm -rf alt.git .git/objects/info/alternates" &&
+	name=$(test_oid numeric) &&
+	path=$(test_oid_to_path "$name") &&
 	git init --bare alt.git &&
 	echo "../../alt.git/objects" >.git/objects/info/alternates &&
-	mkdir alt.git/objects/12 &&
-	>alt.git/objects/12/34567890123456789012345678901234567890 &&
+	mkdir alt.git/objects/$(dirname $path) &&
+	>alt.git/objects/$(dirname $path)/$(basename $path) &&
 	test_must_fail git fsck >out 2>&1 &&
 	test_i18ngrep alt.git out
 '
Previous: brian m. carlsonNext: brian m. carlson
Message 13 of 20 in “Hash-independent tests, part 4”
  1. 00/10 Hash-independent tests, part 4brian m. carlson, Jun 16, 2019
  2. 01/10 t: add helper to convert object IDs to pathsbrian m. carlson, Jun 16, 2019
  3. Johannes SchindelinJun 17, 2019
  4. brian m. carlsonJun 18, 2019
  5. Johannes SixtJun 18, 2019
  6. Johannes SchindelinJun 18, 2019
  7. SZEDER GáborJun 18, 2019
  8. Johannes SchindelinJun 19, 2019
  9. Jeff KingJun 18, 2019
  10. Johannes SchindelinJun 19, 2019
  11. brian m. carlsonJun 18, 2019
  12. 02/10 t1410: make hash size independentbrian m. carlson, Jun 16, 2019
  13. 03/10 t1450: make hash size independentbrian m. carlson, Jun 16, 2019
  14. 04/10 t5000: make hash independentbrian m. carlson, Jun 16, 2019
  15. 06/10 t0027: make hash size independentbrian m. carlson, Jun 16, 2019
  16. 05/10 t6030: make test work with SHA-256brian m. carlson, Jun 16, 2019
  17. 07/10 t0090: make test pass with SHA-256brian m. carlson, Jun 16, 2019
  18. 08/10 t1007: remove SHA1 prerequisitesbrian m. carlson, Jun 16, 2019
  19. 09/10 t1710: make hash independentbrian m. carlson, Jun 16, 2019
  20. 10/10 t2203: avoid hard-coded object ID valuesbrian m. carlson, Jun 16, 2019

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.