From 15071abe08e725aa9870941af5bb2c58a8fe72ef Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Fri, 10 Apr 2020 14:23:39 -0400
Subject: [PATCH] docstring for test helper

---
 src/_zkapauthorizer/tests/test_model.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/_zkapauthorizer/tests/test_model.py b/src/_zkapauthorizer/tests/test_model.py
index 648e610..1289f3a 100644
--- a/src/_zkapauthorizer/tests/test_model.py
+++ b/src/_zkapauthorizer/tests/test_model.py
@@ -285,6 +285,17 @@ class VoucherStoreTests(TestCase):
 
 
     def _spend_order_test(self, get_config, voucher_value, public_key, now, data):
+        """
+        Insert, backup, and extract some tokens.
+
+        :param get_config: See ``tahoe_configs``
+        :param unicode voucher_value: A voucher value to associate with the tokens.
+        :param unicode public_key: A public key to associate with inserted unblinded tokens.
+        :param datetime now: A time to pretend is current.
+        :param data: A Hypothesis data for drawing values from strategies.
+
+        :return: A three-tuple of (backed up tokens, extracted tokens, inserted tokens).
+        """
         tempdir = self.useFixture(TempDir())
         nodedir = tempdir.join(b"node")
 
-- 
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