Fix segfault in patch view for root commit

The code for patch view assumed the current commit would always have a parent,
which made cgit segfault when that wasn't the case.

This fixes the bug and adds a test-script for patch view which includes a test
for the inital commit.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 file changed, 37 insertions, 0 deletions

diff --git a/tests/t0108-patch.sh b/tests/t0108-patch.sh
new file mode 100755
index 0000000..33351d6
--- /dev/null
+++ b/tests/t0108-patch.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+. ./setup.sh
+
+prepare_tests "Check content on patch page"
+
+run_test 'generate foo/patch' '
+	cgit_query "url=foo/patch" >trash/tmp
+'
+
+run_test 'find `From:` line' '
+	grep -e "^From: " trash/tmp
+'
+
+run_test 'find `Date:` line' '
+	grep -e "^Date: " trash/tmp
+'
+
+run_test 'find `Subject:` line' '
+	grep -e "^Subject: commit 5" trash/tmp
+'
+
+run_test 'find `cgit` signature' '
+	 tail -1 trash/tmp | grep -e "^cgit"
+'
+
+run_test 'find initial commit' '
+	root=$(git --git-dir=$PWD/trash/repos/foo/.git rev-list HEAD | tail -1)
+'
+
+run_test 'generate patch for initial commit' '
+	cgit_query "url=foo/patch&id=$root" >trash/tmp
+'
+
+run_test 'find `cgit` signature' '
+	tail -1 trash/tmp | grep -e "^cgit"
+'