t4150: test applying StGit patch

By default, an StGit patch separates the subject from the commit message
and headers as follows:

$subject

From: $author_name <$author_email>

$message
---
$diffstats

We test git-am's ability to detect such a patch as an StGit patch, and
its ability to be able to extract the commit author, date and message
from such a patch.

Based-on-patch-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Paul Tan <pyokagan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t4150-am.sh b/t/t4150-am.sh
index 306e6f39ac88e7ee4ee0fb16dee12cf999fbba1b..0ead529a2f3f57d028ae7944798296f3fb1459ef 100755 (executable)
--- a/t/t4150-am.sh
+++ b/t/t4150-am.sh
@@ -104,6 +104,18 @@ test_expect_success setup '
                echo "X-Fake-Field: Line Three" &&
                git format-patch --stdout first | sed -e "1d"
        } > patch1-ws.eml &&
+       {
+               sed -ne "1p" msg &&
+               echo &&
+               echo "From: $GIT_AUTHOR_NAME <$GIT_AUTHOR_EMAIL>" &&
+               echo "Date: $GIT_AUTHOR_DATE" &&
+               echo &&
+               sed -e "1,2d" msg &&
+               echo &&
+               echo "Signed-off-by: $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL>" &&
+               echo "---" &&
+               git diff-tree --no-commit-id --stat -p second
+       } >patch1-stgit.eml &&
 
        sed -n -e "3,\$p" msg >file &&
        git add file &&
@@ -187,6 +199,16 @@ test_expect_success 'am applies patch e-mail with preceding whitespace' '
        test "$(git rev-parse second^)" = "$(git rev-parse HEAD^)"
 '
 
+test_expect_success 'am applies stgit patch' '
+       rm -fr .git/rebase-apply &&
+       git checkout -f first &&
+       git am patch1-stgit.eml &&
+       test_path_is_missing .git/rebase-apply &&
+       git diff --exit-code second &&
+       test_cmp_rev second HEAD &&
+       test_cmp_rev second^ HEAD^
+'
+
 test_expect_success 'setup: new author and committer' '
        GIT_AUTHOR_NAME="Another Thor" &&
        GIT_AUTHOR_EMAIL="a.thor@example.com" &&