commit: drop duplicated parents

diff --git a/t/t2200-add-update.sh b/t/t2200-add-update.sh
index eb1ced3c371ecaeab9d0dc14be888bf7df110483..f57a6e077c3b85dcdedc3f4813150feebc8e647d 100755 (executable)
--- a/t/t2200-add-update.sh
+++ b/t/t2200-add-update.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-test_description='git add -u with path limiting
+test_description='git add -u
 
 This test creates a working tree state with three files:
 
@@ -9,7 +9,10 @@ This test creates a working tree state with three files:
   dir/other (untracked)
 
 and issues a git add -u with path limiting on "dir" to add
-only the updates to dir/sub.'
+only the updates to dir/sub.
+
+Also tested are "git add -u" without limiting, and "git add -u"
+without contents changes.'
 
 . ./test-lib.sh
 
@@ -59,7 +62,7 @@ test_expect_success 'cache tree has not been corrupted' '
        sed -e "s/ 0    /       /" >expect &&
        git ls-tree -r $(git write-tree) |
        sed -e "s/ blob / /" >current &&
-       diff -u expect current
+       test_cmp expect current
 
 '
 
@@ -85,4 +88,44 @@ test_expect_success 'replace a file with a symlink' '
 
 '
 
+test_expect_success 'add everything changed' '
+
+       git add -u &&
+       test -z "$(git diff-files)"
+
+'
+
+test_expect_success 'touch and then add -u' '
+
+       touch check &&
+       git add -u &&
+       test -z "$(git diff-files)"
+
+'
+
+test_expect_success 'touch and then add explicitly' '
+
+       touch check &&
+       git add check &&
+       test -z "$(git diff-files)"
+
+'
+
+test_expect_success 'add -n -u should not add but just report' '
+
+       (
+               echo "add '\''check'\''" &&
+               echo "remove '\''top'\''"
+       ) >expect &&
+       before=$(git ls-files -s check top) &&
+       echo changed >>check &&
+       rm -f top &&
+       git add -n -u >actual &&
+       after=$(git ls-files -s check top) &&
+
+       test "$before" = "$after" &&
+       test_cmp expect actual
+
+'
+
 test_done