. ./test-lib.sh
cat > fake_editor.sh << \EOF
+#!/bin/sh
echo "$MSG" > "$1"
echo "$MSG" >& 2
EOF
test_cmp expect actual
'
+cat > expect << EOF
+commit 2ede89468182a62d0bde2583c736089bcf7d7e92
+Author: A U Thor <author@example.com>
+Date: Thu Apr 7 15:19:13 2005 -0700
+
+ 7th
+
+Notes:
+ other note
+EOF
+
+test_expect_success 'create note from other note with "git notes add -C"' '
+ : > a7 &&
+ git add a7 &&
+ test_tick &&
+ git commit -m 7th &&
+ git notes add -C $(git notes list HEAD^) &&
+ git log -1 > actual &&
+ test_cmp expect actual &&
+ test "$(git notes list HEAD)" = "$(git notes list HEAD^)"
+'
+
+test_expect_success 'create note from non-existing note with "git notes add -C" fails' '
+ : > a8 &&
+ git add a8 &&
+ test_tick &&
+ git commit -m 8th &&
+ test_must_fail git notes add -C deadbeef &&
+ test_must_fail git notes list HEAD
+'
+
+cat > expect << EOF
+commit 016e982bad97eacdbda0fcbd7ce5b0ba87c81f1b
+Author: A U Thor <author@example.com>
+Date: Thu Apr 7 15:21:13 2005 -0700
+
+ 9th
+
+Notes:
+ yet another note
+EOF
+
+test_expect_success 'create note from other note with "git notes add -c"' '
+ : > a9 &&
+ git add a9 &&
+ test_tick &&
+ git commit -m 9th &&
+ MSG="yet another note" git notes add -c $(git notes list HEAD^^) &&
+ git log -1 > actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'create note from non-existing note with "git notes add -c" fails' '
+ : > a10 &&
+ git add a10 &&
+ test_tick &&
+ git commit -m 10th &&
+ test_must_fail MSG="yet another note" git notes add -c deadbeef &&
+ test_must_fail git notes list HEAD
+'
+
+cat > expect << EOF
+commit 016e982bad97eacdbda0fcbd7ce5b0ba87c81f1b
+Author: A U Thor <author@example.com>
+Date: Thu Apr 7 15:21:13 2005 -0700
+
+ 9th
+
+Notes:
+ yet another note
+$whitespace
+ yet another note
+EOF
+
+test_expect_success 'append to note from other note with "git notes append -C"' '
+ git notes append -C $(git notes list HEAD^) HEAD^ &&
+ git log -1 HEAD^ > actual &&
+ test_cmp expect actual
+'
+
+cat > expect << EOF
+commit ffed603236bfa3891c49644257a83598afe8ae5a
+Author: A U Thor <author@example.com>
+Date: Thu Apr 7 15:22:13 2005 -0700
+
+ 10th
+
+Notes:
+ other note
+EOF
+
+test_expect_success 'create note from other note with "git notes append -c"' '
+ MSG="other note" git notes append -c $(git notes list HEAD^) &&
+ git log -1 > actual &&
+ test_cmp expect actual
+'
+
+cat > expect << EOF
+commit ffed603236bfa3891c49644257a83598afe8ae5a
+Author: A U Thor <author@example.com>
+Date: Thu Apr 7 15:22:13 2005 -0700
+
+ 10th
+
+Notes:
+ other note
+$whitespace
+ yet another note
+EOF
+
+test_expect_success 'append to note from other note with "git notes append -c"' '
+ MSG="yet another note" git notes append -c $(git notes list HEAD) &&
+ git log -1 > actual &&
+ test_cmp expect actual
+'
+
+cat > expect << EOF
+commit 6352c5e33dbcab725fe0579be16aa2ba8eb369be
+Author: A U Thor <author@example.com>
+Date: Thu Apr 7 15:23:13 2005 -0700
+
+ 11th
+
+Notes:
+ other note
+$whitespace
+ yet another note
+EOF
+
+test_expect_success 'copy note with "git notes copy"' '
+ : > a11 &&
+ git add a11 &&
+ test_tick &&
+ git commit -m 11th &&
+ git notes copy HEAD^ HEAD &&
+ git log -1 > actual &&
+ test_cmp expect actual &&
+ test "$(git notes list HEAD)" = "$(git notes list HEAD^)"
+'
+
+test_expect_success 'prevent overwrite with "git notes copy"' '
+ test_must_fail git notes copy HEAD~2 HEAD &&
+ git log -1 > actual &&
+ test_cmp expect actual &&
+ test "$(git notes list HEAD)" = "$(git notes list HEAD^)"
+'
+
+cat > expect << EOF
+commit 6352c5e33dbcab725fe0579be16aa2ba8eb369be
+Author: A U Thor <author@example.com>
+Date: Thu Apr 7 15:23:13 2005 -0700
+
+ 11th
+
+Notes:
+ yet another note
+$whitespace
+ yet another note
+EOF
+
+test_expect_success 'allow overwrite with "git notes copy -f"' '
+ git notes copy -f HEAD~2 HEAD &&
+ git log -1 > actual &&
+ test_cmp expect actual &&
+ test "$(git notes list HEAD)" = "$(git notes list HEAD~2)"
+'
+
+test_expect_success 'cannot copy note from object without notes' '
+ : > a12 &&
+ git add a12 &&
+ test_tick &&
+ git commit -m 12th &&
+ : > a13 &&
+ git add a13 &&
+ test_tick &&
+ git commit -m 13th &&
+ test_must_fail git notes copy HEAD^ HEAD
+'
+
test_done