test-lib: set $TRASH_DIRECTORY earlier

diff --git a/t/t5300-pack-object.sh b/t/t5300-pack-object.sh
index 6c620cd5407537e19507bd92a9cd55b2e54001d8..410a09b0dd756c90b8a47dbfc9c0e7ee048e4557 100755 (executable)
--- a/t/t5300-pack-object.sh
+++ b/t/t5300-pack-object.sh
@@ -468,29 +468,32 @@ test_expect_success 'pack-objects in too-many-packs mode' '
        git fsck
 '
 
-#
-# WARNING!
-#
-# The following test is destructive.  Please keep the next
-# two tests at the end of this file.
-#
-
-test_expect_success \
-    'fake a SHA1 hash collision' \
-    'long_a=$(git hash-object a | sed -e "s!^..!&/!") &&
-     long_b=$(git hash-object b | sed -e "s!^..!&/!") &&
-     test -f   .git/objects/$long_b &&
-     cp -f     .git/objects/$long_a \
-               .git/objects/$long_b'
+test_expect_success 'setup: fake a SHA1 hash collision' '
+       git init corrupt &&
+       (
+               cd corrupt &&
+               long_a=$(git hash-object -w ../a | sed -e "s!^..!&/!") &&
+               long_b=$(git hash-object -w ../b | sed -e "s!^..!&/!") &&
+               test -f .git/objects/$long_b &&
+               cp -f   .git/objects/$long_a \
+                       .git/objects/$long_b
+       )
+'
 
-test_expect_success \
-    'make sure index-pack detects the SHA1 collision' \
-    'test_must_fail git index-pack -o bad.idx test-3.pack 2>msg &&
-     test_i18ngrep "SHA1 COLLISION FOUND" msg'
+test_expect_success 'make sure index-pack detects the SHA1 collision' '
+       (
+               cd corrupt &&
+               test_must_fail git index-pack -o ../bad.idx ../test-3.pack 2>msg &&
+               test_i18ngrep "SHA1 COLLISION FOUND" msg
+       )
+'
 
-test_expect_success \
-    'make sure index-pack detects the SHA1 collision (large blobs)' \
-    'test_must_fail git -c core.bigfilethreshold=1 index-pack -o bad.idx test-3.pack 2>msg &&
-     test_i18ngrep "SHA1 COLLISION FOUND" msg'
+test_expect_success 'make sure index-pack detects the SHA1 collision (large blobs)' '
+       (
+               cd corrupt &&
+               test_must_fail git -c core.bigfilethreshold=1 index-pack -o ../bad.idx ../test-3.pack 2>msg &&
+               test_i18ngrep "SHA1 COLLISION FOUND" msg
+       )
+'
 
 test_done