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-rw-r--r--t/lib-pack.sh22
-rwxr-xr-xt/t5309-pack-delta-cycles.sh59
2 files changed, 81 insertions, 0 deletions
diff --git a/t/lib-pack.sh b/t/lib-pack.sh
index fecd5a0279..7e8685b44c 100644
--- a/t/lib-pack.sh
+++ b/t/lib-pack.sh
@@ -55,6 +55,28 @@ pack_obj () {
printf '\062\170\234\143\267\3\0\0\116\0\106'
return
;;
+ 01d7713666f4de822776c7622c10f1b07de280dc)
+ printf '\165\1\327\161\66\146\364\336\202\47\166' &&
+ printf '\307\142\54\20\361\260\175\342\200\334\170' &&
+ printf '\234\143\142\142\142\267\003\0\0\151\0\114'
+ return
+ ;;
+ esac
+ ;;
+
+ # blob containing "\7\0"
+ 01d7713666f4de822776c7622c10f1b07de280dc)
+ case "$2" in
+ '')
+ printf '\062\170\234\143\147\0\0\0\20\0\10'
+ return
+ ;;
+ e68fe8129b546b101aee9510c5328e7f21ca1d18)
+ printf '\165\346\217\350\22\233\124\153\20\32\356' &&
+ printf '\225\20\305\62\216\177\41\312\35\30\170\234' &&
+ printf '\143\142\142\142\147\0\0\0\53\0\16'
+ return
+ ;;
esac
;;
esac
diff --git a/t/t5309-pack-delta-cycles.sh b/t/t5309-pack-delta-cycles.sh
new file mode 100755
index 0000000000..1640bf7764
--- /dev/null
+++ b/t/t5309-pack-delta-cycles.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+
+test_description='test index-pack handling of delta cycles in packfiles'
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-pack.sh
+
+# Two similar-ish objects that we have computed deltas between.
+A=01d7713666f4de822776c7622c10f1b07de280dc
+B=e68fe8129b546b101aee9510c5328e7f21ca1d18
+
+# double-check our hand-constucted packs
+test_expect_success 'index-pack works with a single delta (A->B)' '
+ clear_packs &&
+ {
+ pack_header 2 &&
+ pack_obj $A $B &&
+ pack_obj $B
+ } >ab.pack &&
+ pack_trailer ab.pack &&
+ git index-pack --stdin <ab.pack &&
+ git cat-file -t $A &&
+ git cat-file -t $B
+'
+
+test_expect_success 'index-pack works with a single delta (B->A)' '
+ clear_packs &&
+ {
+ pack_header 2 &&
+ pack_obj $A &&
+ pack_obj $B $A
+ } >ba.pack &&
+ pack_trailer ba.pack &&
+ git index-pack --stdin <ba.pack &&
+ git cat-file -t $A &&
+ git cat-file -t $B
+'
+
+test_expect_success 'index-pack detects missing base objects' '
+ clear_packs &&
+ {
+ pack_header 1 &&
+ pack_obj $A $B
+ } >missing.pack &&
+ pack_trailer missing.pack &&
+ test_must_fail git index-pack --fix-thin --stdin <missing.pack
+'
+
+test_expect_success 'index-pack detects REF_DELTA cycles' '
+ clear_packs &&
+ {
+ pack_header 2 &&
+ pack_obj $A $B &&
+ pack_obj $B $A
+ } >cycle.pack &&
+ pack_trailer cycle.pack &&
+ test_must_fail git index-pack --fix-thin --stdin <cycle.pack
+'
+
+test_done