Add tests for unixsocket.

t/t5565-http-unix-domain-socket.sh

@@ -0,0 +1,80 @@
+#!/bin/sh
+
+test_description="test fetching through http via unix domain socket"
+
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-httpd.sh
+
+test -z "$NO_UNIX_SOCKETS" || {
+	skip_all='skipping http-unix-socket tests, unix sockets not available'
+	test_done
+}
+
+UDS_TO_TCP_FIFO=uds_to_tcp
+TCP_TO_UDS_FIFO=tcp_to_uds
+UDS_PID=
+TCP_PID=
+UDS_SOCKET="$(pwd)/uds.sock"
+UNRESOLVABLE_ENDPOINT=http://localhost:4242
+
+start_proxy_unix_to_tcp() {
+    local socket_path="$UDS_SOCKET"
+    local host=127.0.0.1
+    local port=$LIB_HTTPD_PORT
+
+    rm -f "$UDS_TO_TCP_FIFO"
+    rm -f "$TCP_TO_UDS_FIFO"
+    rm -f "$socket_path"
+    mkfifo "$UDS_TO_TCP_FIFO"
+    mkfifo "$TCP_TO_UDS_FIFO"
+    nc -klU "$socket_path" <tcp_to_uds >uds_to_tcp &
+    UDS_PID=$!
+
+    nc "$host" "$port" >tcp_to_uds <uds_to_tcp &
+    TCP_PID=$!
+
+    test_atexit 'stop_proxy_unix_to_tcp'
+}
+
+stop_proxy_unix_to_tcp() {
+    kill "$UDS_PID"
+    kill "$TCP_PID"
+    rm -f "$UDS_TO_TCP_FIFO"
+    rm -f "$TCP_TO_UDS_FIFO"
+}
+
+start_httpd
+start_proxy_unix_to_tcp
+
+test_expect_success 'setup repository' '
+	test_commit foo &&
+	git init --bare "$HTTPD_DOCUMENT_ROOT_PATH/repo.git" &&
+	git push --mirror "$HTTPD_DOCUMENT_ROOT_PATH/repo.git"
+'
+
+# sanity check that we can't clone normally
+test_expect_success 'cloning without UDS fails' '
+    test_must_fail git clone "$UNRESOLVABLE_ENDPOINT/smart/repo.git" clone
+'
+
+test_expect_success 'cloning with UDS succeeds' '
+    test_when_finished "rm -rf clone" &&
+	test_config_global http.unixsocket "$UDS_SOCKET" &&
+	git clone "$UNRESOLVABLE_ENDPOINT/smart/repo.git" clone
+'
+
+test_expect_success 'cloning with a non-existent http proxy fails' '
+    git clone $HTTPD_URL/smart/repo.git clone &&
+    rm -rf clone &&
+    test_config_global http.proxy 127.0.0.1:0 &&
+    test_must_fail git clone $HTTPD_URL/smart/repo.git clone
+'
+
+test_expect_success 'UDS socket takes precedence over http proxy' '
+    test_when_finished "rm -rf clone" &&
+    test_config_global http.proxy 127.0.0.1:0 &&
+    test_config_global http.unixsocket "$UDS_SOCKET" &&
+    git clone $HTTPD_URL/smart/repo.git clone
+'
+
+test_done