Add basic cvsimport tests

We weren't even testing basic things before, so let's at
least try importing and updating a trivial repository, which
will catch total breakage.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t9600-cvsimport.sh

@@ -0,0 +1,99 @@
+#!/bin/sh
+
+test_description='git-cvsimport basic tests'
+. ./test-lib.sh
+
+if ! ( type cvs && type cvsps ) >/dev/null 2>&1
+then
+	test_expect_success 'skipping cvsimport tests, cvs/cvsps not found' ''
+	test_done
+	exit
+fi
+
+CVSROOT=$(pwd)/cvsroot
+export CVSROOT
+# for clean cvsps cache
+HOME=$(pwd)
+export HOME
+
+test_expect_success 'setup cvsroot' 'cvs init'
+
+test_expect_success 'setup a cvs module' '
+
+	mkdir $CVSROOT/module &&
+	cvs co -d module-cvs module &&
+	cd module-cvs &&
+	cat <<EOF >o_fortuna &&
+O Fortuna
+velut luna
+statu variabilis,
+
+semper crescis
+aut decrescis;
+vita detestabilis
+
+nunc obdurat
+et tunc curat
+ludo mentis aciem,
+
+egestatem,
+potestatem
+dissolvit ut glaciem.
+EOF
+	cvs add o_fortuna &&
+	cat <<EOF >message &&
+add "O Fortuna" lyrics
+
+These public domain lyrics make an excellent sample text.
+EOF
+	cvs commit -F message &&
+	cd ..
+'
+
+test_expect_success 'import a trivial module' '
+
+	git cvsimport -a -z 0 -C module-git module &&
+	git diff module-cvs/o_fortuna module-git/o_fortuna
+
+'
+
+test_expect_success 'update cvs module' '
+
+	cd module-cvs &&
+	cat <<EOF >o_fortuna &&
+O Fortune,
+like the moon
+you are changeable,
+
+ever waxing
+and waning;
+hateful life
+
+first oppresses
+and then soothes
+as fancy takes it;
+
+poverty
+and power
+it melts them like ice.
+EOF
+	cat <<EOF >message &&
+translate to English
+
+My Latin is terrible.
+EOF
+	cvs commit -F message &&
+	cd ..
+'
+
+test_expect_success 'update git module' '
+
+	cd module-git &&
+	git cvsimport -a -z 0 module &&
+	git merge origin &&
+	cd .. &&
+	git diff module-cvs/o_fortuna module-git/o_fortuna
+
+'
+
+test_done