From 1fbded5d14ee8a115573e7aad305955c477b6e3c Mon Sep 17 00:00:00 2001
From: Dmitri Bogomolov <4glitch@gmail.com>
Date: Wed, 17 Mar 2021 16:05:15 +0200
Subject: [PATCH] A test case for proofofwork module with simple test for empty
 cpow

---
 src/tests/test_proofofwork.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 src/tests/test_proofofwork.py

diff --git a/src/tests/test_proofofwork.py b/src/tests/test_proofofwork.py
new file mode 100644
index 00000000..567c201d
--- /dev/null
+++ b/src/tests/test_proofofwork.py
@@ -0,0 +1,23 @@
+"""
+Tests for proofofwork module
+"""
+import unittest
+
+from .common import skip_python3
+
+skip_python3()  # noqa:E402
+
+from pybitmessage import proofofwork
+
+
+class TestProofofwork(unittest.TestCase):
+    """The main test case for proofofwork"""
+
+    @classmethod
+    def setUpClass(cls):
+        proofofwork.init()
+
+    def test_empty(self):
+        """just reproducing the empty test from proofofwork.init()"""
+        self.assertEqual(
+            proofofwork._doCPoW(2**63, ""), [6485065370652060397, 4])