diff --git a/src/openclpow.py b/src/openclpow.py
index 35bf46d2..a086c81f 100644
--- a/src/openclpow.py
+++ b/src/openclpow.py
@@ -2,9 +2,8 @@
 """
 Module for Proof of Work using OpenCL
 """
-import hashlib
 import os
-from struct import pack, unpack
+from struct import pack
 
 import paths
 from bmconfigparser import BMConfigParser
@@ -109,14 +108,3 @@ def do_opencl_pow(hash_, target):
         raise Exception("Interrupted")
 #   logger.debug("Took %d tries.", progress)
     return output[0][0]
-
-
-if __name__ == "__main__":
-    initCL()
-    target_ = 54227212183
-    initialHash = ("3758f55b5a8d902fd3597e4ce6a2d3f23daff735f65d9698c270987f4e67ad590"
-                   "b93f3ffeba0ef2fd08a8dc2f87b68ae5a0dc819ab57f22ad2c4c9c8618a43b3").decode("hex")
-    nonce = do_opencl_pow(initialHash.encode("hex"), target_)
-    trialValue, = unpack(
-        '>Q', hashlib.sha512(hashlib.sha512(pack('>Q', nonce) + initialHash).digest()).digest()[0:8])
-    print "{} - value {} < {}".format(nonce, trialValue, target_)
diff --git a/src/tests/test_openclpow.py b/src/tests/test_openclpow.py
new file mode 100644
index 00000000..384addb7
--- /dev/null
+++ b/src/tests/test_openclpow.py
@@ -0,0 +1,28 @@
+"""
+Tests for openclpow module
+"""
+import hashlib
+import unittest
+
+import pybitmessage.openclpow as openclpow
+
+from struct import pack, unpack
+
+
+class TestOpenClPow(unittest.TestCase):
+    """
+    Main opencl test case
+    """
+
+    @unittest.skipIf(not openclpow.libAvailable,
+                     "pyopencl is not installed")
+    def test_openclpow(self):
+        """Check the working of openclpow module"""
+        openclpow.initCL()
+        target_ = 54227212183
+        initialHash = ("3758f55b5a8d902fd3597e4ce6a2d3f23daff735f65d9698c270987f4e67ad590"
+                       "b93f3ffeba0ef2fd08a8dc2f87b68ae5a0dc819ab57f22ad2c4c9c8618a43b3").decode("hex")
+        nonce = openclpow.do_opencl_pow(initialHash.encode("hex"), target_)
+        trialValue, = unpack(
+            '>Q', hashlib.sha512(hashlib.sha512(pack('>Q', nonce) + initialHash).digest()).digest()[0:8])
+        self.assertLess((nonce - trialValue), target_)