Testing blurb

README.rst

 PaymentServer
 =============
+
+Testing
+-------
+
+You can run the PaymentServer automated test suite using stack::
+
+  $ stack test
+
+You may also want to perform manual integration testing against Stripe.
+First, run the server::
+
+  $ stack run
+
+Then configure Stripe with a webhook pointing at the server.
+The hook lives at ``/v1/stripe/webhook`` so configure Stripe with,
+eg, ``http://youraddress:8081/v1/stripe/webhook``.
+
+Then create a testing charge using Stripe::
+
+   $ STRIPE_SECRET_KEY=sk_test_...
+   $ curl \
+     https://api.stripe.com/v1/charges   \
+     -u ${STRIPE_SECRET_KEY}:   \
+     -d amount=999   \
+     -d currency=usd   \
+     -d source=tok_visa   \
+     -d 'metadata[Voucher]=abcdefghijk'
+
+This results in Stripe making a callback to the PaymentServer with the charge details.
+The PaymentServer marks the voucher as paid in its database.