http-push: add regression tests

http-push tests require a web server with WebDAV support.

This commit introduces a HTTPD test library, which can be configured using
the following environment variables.

GIT_TEST_HTTPD		enable HTTPD tests
LIB_HTTPD_PATH		web server path
LIB_HTTPD_MODULE_PATH	web server modules path
LIB_HTTPD_PORT		listening port
LIB_HTTPD_DAV		enable DAV
LIB_HTTPD_SVN		enable SVN
LIB_HTTPD_SSL		enable SSL

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5540-http-push.sh

@@ -0,0 +1,73 @@
+#!/bin/sh
+#
+# Copyright (c) 2008 Clemens Buchacher <drizzd@aon.at>
+#
+
+test_description='test http-push
+
+This test runs various sanity checks on http-push.'
+
+. ./test-lib.sh
+
+ROOT_PATH="$PWD"
+LIB_HTTPD_DAV=t
+
+. ../lib-httpd.sh
+
+if ! start_httpd >&3 2>&4
+then
+	say "skipping test, web server setup failed"
+	test_done
+	exit
+fi
+
+test_expect_success 'setup remote repository' '
+	cd "$ROOT_PATH" &&
+	mkdir test_repo &&
+	cd test_repo &&
+	git init &&
+	: >path1 &&
+	git add path1 &&
+	test_tick &&
+	git commit -m initial &&
+	cd - &&
+	git clone --bare test_repo test_repo.git &&
+	cd test_repo.git &&
+	git --bare update-server-info &&
+	chmod +x hooks/post-update &&
+	cd - &&
+	mv test_repo.git $HTTPD_DOCUMENT_ROOT_PATH
+'
+	
+test_expect_success 'clone remote repository' '
+	cd "$ROOT_PATH" &&
+	git clone $HTTPD_URL/test_repo.git test_repo_clone
+'
+
+test_expect_success 'push to remote repository' '
+	cd "$ROOT_PATH"/test_repo_clone &&
+	: >path2 &&
+	git add path2 &&
+	test_tick &&
+	git commit -m path2 &&
+	git push
+'
+
+test_expect_success 'create and delete remote branch' '
+	cd "$ROOT_PATH"/test_repo_clone &&
+	git checkout -b dev &&
+	: >path3 &&
+	git add path3 &&
+	test_tick &&
+	git commit -m dev &&
+	git push origin dev &&
+	git fetch &&
+	git push origin :dev &&
+	git branch -d -r origin/dev &&
+	git fetch &&
+	! git show-ref --verify refs/remotes/origin/dev
+'
+
+stop_httpd
+
+test_done