From a32ec0c8e2924aca80b14fccc175f5fc360ec992 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Tue, 26 Sep 2017 13:26:20 +0300
Subject: Fix: use random port when running tests

---
 apifw.yarn | 15 ++++++++++-----
 apitest.py |  4 ++--
 randport   | 28 ++++++++++++++++++++++++++++
 3 files changed, 40 insertions(+), 7 deletions(-)
 create mode 100755 randport

diff --git a/apifw.yarn b/apifw.yarn
index 3e69c38..a914ab9 100644
--- a/apifw.yarn
+++ b/apifw.yarn
@@ -63,10 +63,12 @@ It's a silly name. Please suggest something better.
     # FIXME: It would be good for the test suite to pick a random free
     # port. But that's not simple.
     export APITEST_LOG="$DATADIR/apitest.log"
-    gunicorn3 --daemon --bind 127.0.0.1:12765 -p "$DATADIR/pid" \
+    "$SRCDIR/randport" > "$DATADIR/port"
+    port="$(cat "$DATADIR/port")"
+    gunicorn3 --daemon --bind "127.0.0.1:$port" -p "$DATADIR/pid" \
         --log-file "$DATADIR/log" --log-level=debug \
         apitest:app
-    while ! curl -s http://127.0.0.1:12765/version > /dev/null
+    while ! curl -s "http://127.0.0.1:$port/version" > /dev/null
     do
         # Sleep in Debian can take a fractional second arg.
         sleep 0.1
@@ -76,20 +78,23 @@ It's a silly name. Please suggest something better.
     kill "$(cat "$DATADIR/pid")"
 
     IMPLEMENTS WHEN client requests GET /version without token
-    curl -sv "http://127.0.0.1:12765/version" > "$DATADIR/out" 2> "$DATADIR/err"
+    port="$(cat "$DATADIR/port")"
+    curl -sv "http://127.0.0.1:$port/version" > "$DATADIR/out" 2> "$DATADIR/err"
 
     IMPLEMENTS WHEN client requests GET /version using token
     token="$(cat "$DATADIR/token")"
+    port="$(cat "$DATADIR/port")"
     curl -sv -H "Authorization: Bearer $token" \
-        "http://127.0.0.1:12765/version" > "$DATADIR/out" 2> "$DATADIR/err"
+        "http://127.0.0.1:$port/version" > "$DATADIR/out" 2> "$DATADIR/err"
 
     IMPLEMENTS WHEN client uploads a fake jpg
     token="$(cat "$DATADIR/token")"
+    port="$(cat "$DATADIR/port")"
     curl -sv -H "Authorization: Bearer $token" \
         -H "Content-type: application/jpeg" \
         -d "fake jpg" \
         -X PUT \
-        "http://127.0.0.1:12765/upload" > "$DATADIR/out" 2> "$DATADIR/err"
+        "http://127.0.0.1:$port/upload" > "$DATADIR/out" 2> "$DATADIR/err"
 
     IMPLEMENTS WHEN client gets an authorization token with scope "(.+)"
     iss="$(cat "$DATADIR/iss")"
diff --git a/apitest.py b/apitest.py
index 6e1867a..946e9e1 100644
--- a/apitest.py
+++ b/apitest.py
@@ -47,7 +47,7 @@ class Api(apifw.Api):
             },
         ]
 
-    def version(self, content_type, body):
+    def version(self, content_type, body, **kwargs):
         return apifw.Response({
             'status': apifw.HTTP_OK,
             'body': 'version: 4.2',
@@ -56,7 +56,7 @@ class Api(apifw.Api):
             },
         })
 
-    def upload(self, content_type, body):
+    def upload(self, content_type, body, **kwargs):
         return apifw.Response({
             'status': apifw.HTTP_OK,
             'body': 'thank you for %s\n' % body.decode('ascii'),
diff --git a/randport b/randport
new file mode 100755
index 0000000..d523401
--- /dev/null
+++ b/randport
@@ -0,0 +1,28 @@
+#!/usr/bin/python3
+#
+# Copyright (C) 2017  Lars Wirzenius
+#
+# Pick a random port that is free to be listened on. For testing.
+
+
+import errno
+import random
+import socket
+import sys
+
+
+MAX = 1000
+for i in range(MAX):
+    port = random.randint(1025, 2**15-1)
+    s = socket.socket()
+    try:
+        s.bind(('0.0.0.0', port))
+    except OSError as e:
+        if e.errno == errno.EADDRINUSE:
+            continue
+        raise
+    break
+else:
+    sys.stderr.write("Can't find a free port\n")
+    sys.exit(1)
+sys.stdout.write('{}\n'.format(port))
-- 
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