test: Add my test.sh script (#1802)

Because I keep blowing it away when I `git clean`...

test/test.sh

@@ -0,0 +1,41 @@
+#! /usr/bin/env bash
+
+# This script builds the client and server binaries and runs them in a tmux
+# session side-by-side. The client connects to the server and the server
+# responds with a simple HTTP response. The client and server are run with
+# verbose logging and the qlog output is stored in a temporary directory. The
+# script also runs tcpdump to capture the packets exchanged between the client
+# and server. The script uses tmux to create a split terminal window to display
+# the qlog output and the packet capture.
+
+set -e
+
+cargo build --bin neqo-client --bin neqo-server
+
+tmp=$(mktemp -d)
+addr=127.0.0.1
+port=4433
+path=/20000
+flags="--verbose --qlog-dir $tmp --use-old-http --alpn hq-interop --quic-version 1"
+if [ "$(uname -s)" != "Linux" ]; then
+        iface=lo0
+else
+        iface=lo
+fi
+
+client="./target/debug/neqo-client $flags --output-dir $tmp --stats https://$addr:$port$path"
+server="SSLKEYLOGFILE=$tmp/test.tlskey ./target/debug/neqo-server $flags $addr:$port"
+
+tcpdump -U -i "$iface" -w "$tmp/test.pcap" host $addr and port $port >/dev/null 2>&1 &
+tcpdump_pid=$!
+
+tmux -CC \
+        set-option -g default-shell "$(which bash)" \; \
+        new-session "$client && kill -USR2 $tcpdump_pid && touch $tmp/done" \; \
+        split-window -h "$server" \; \
+        split-window -v -f "\
+                until [ -e $tmp/done ]; do sleep 1; done && \
+                tshark -r $tmp/test.pcap -o tls.keylog_file:$tmp/test.tlskey" \; \
+        set remain-on-exit on
+
+# rm -rf "$tmp"