OpenPGP signatures: added speed test.

tests/test_sign.py

@@ -9,6 +9,7 @@
  *  Bernhard E. Reiter <bernhard@intevation.de>
 """
 
+from timeit import default_timer as timer
 import unittest
 from io import BytesIO
 
@@ -53,3 +54,34 @@ def test_sign_nomime(self):
         self.assertEqual(len(sigs), 1)
         vsig = vsigs[0]
         self.assertEqual(vsig.fpr, '5F503EFAC8C89323D54C252591B8CD7E15925678')
+
+    def test_speed(self):
+        email_body = """Hello,
+
+        this is my email body,
+        which shall be signed."""
+
+        ctx = gpgme.Context()
+        key = ctx.get_key('5F50 3EFA C8C8 9323 D54C 2525 91B8 CD7E 1592 5678')
+        ctx.signers = [key]
+
+        plaintext = BytesIO(email_body.encode())
+        signature = BytesIO()
+
+        start = timer()
+        n = 100
+        for i in range(n):
+            plaintext.seek(0)
+            signature.seek(0)
+
+            sigs = ctx.sign(plaintext, signature, gpgme.SIG_MODE_CLEAR)
+            self.assertEqual(len(sigs), 1)
+            sig = sigs[0]
+            self.assertEqual(sig.type, gpgme.SIG_MODE_CLEAR)
+            self.assertIsInstance(sig, gpgme.NewSignature)
+        end = timer()
+        time_spent = end - start # in fractions of seconds
+        #print("\nTime elapsed for {:d} iterations: {:.3f}".format(n, time_spent))
+        #print("That is {:.1f} signatures per second.".format(n/time_spent))
+        #we want to process at least 12 per second
+        self.assertTrue(n/time_spent > 12)