Started on tests

[szyfrow.git] / tests / test_affine.py

diff --git a/tests/test_affine.py b/tests/test_affine.py
index 83d9090aee5284301abbd828e7f97da595b428c7..29ef05a395f3b61e70e5505be6e9d7bccd701842 100644 (file)
--- a/tests/test_affine.py
+++ b/tests/test_affine.py
@@ -1,59 +1,58 @@
-import unittest
+import pytest
 import string 
 
-from cipher.affine import *
-from support.utilities import *
-
-class AffineTest(unittest.TestCase):
-
-    def test_encipher_letter(self):
-        for p, c in zip(
-                string.ascii_letters, 
-                'hknqtwzcfiloruxadgjmpsvybeHKNQTWZCFILORUXADGJMPSVYBE'):
-            self.assertEqual(affine_encipher_letter(p, 3, 5, True), c)
-
-        for p, c in zip(
-                string.ascii_letters, 
-                'filoruxadgjmpsvybehknqtwzcFILORUXADGJMPSVYBEHKNQTWZC'):
-            self.assertEqual(affine_encipher_letter(p, 3, 5, False), c)
-
-
-    def test_decipher_letter(self):
-        for p, c in zip(
-                string.ascii_letters, 
-                'hknqtwzcfiloruxadgjmpsvybeHKNQTWZCFILORUXADGJMPSVYBE'):
-            self.assertEqual(affine_decipher_letter(c, 3, 5, True), p)
-
-        for p, c in zip(
-                string.ascii_letters, 
-                'filoruxadgjmpsvybehknqtwzcFILORUXADGJMPSVYBEHKNQTWZC'):
-            self.assertEqual(affine_decipher_letter(c, 3, 5, False), p)
-
-    def test_encipher_message(self):
-        self.assertEqual(affine_encipher(
-                'hours passed during which jerico tried every trick he could think of', 
-                15, 22, True),
-            'lmyfu bkuusd dyfaxw claol psfaom jfasd snsfg jfaoe ls omytd jlaxe mh')
-
-
-    def test_decipher_message(self):
-        self.assertEqual(affine_decipher('lmyfu bkuusd dyfaxw claol psfaom jfasd snsfg jfaoe ls omytd jlaxe mh', 
-                    15, 22, True),
-            'hours passed during which jerico tried every trick he could think of')
-
-
-    def test_break(self):
-        ciphertext = '''lmyfu bkuusd dyfaxw claol psfaom jfasd snsfg jfaoe ls 
-          omytd jlaxe mh jm bfmibj umis hfsul axubafkjamx. ls kffkxwsd jls 
-          ofgbjmwfkiu olfmxmtmwaokttg jlsx ls kffkxwsd jlsi zg tsxwjl. jlsx 
-          ls umfjsd jlsi zg hfsqysxog. ls dmmdtsd mx jls bats mh bkbsf. ls 
-          bfmctsd kfmyxd jls lyj, mztanamyu xmc jm clm cku tmmeaxw kj lai 
-          kxd clm ckuxj.'''
-        expected_key = (15, 22, True)
-        expected_score = -340.6011819
-        actual_key, actual_score = affine_break(ciphertext)
-        self.assertEqual(expected_key, actual_key)
-        self.assertAlmostEqual(expected_score, actual_score)
-
-if __name__ == '__main__':
-    unittest.main()
+from szyfrow.affine import *
+from szyfrow.support.utilities import *
+
+
+def test_encipher_letter():
+    for p, c in zip(
+            string.ascii_letters, 
+            'hknqtwzcfiloruxadgjmpsvybeHKNQTWZCFILORUXADGJMPSVYBE'):
+        assert affine_encipher_letter(p, 3, 5, True) == c
+
+    for p, c in zip(
+            string.ascii_letters, 
+            'filoruxadgjmpsvybehknqtwzcFILORUXADGJMPSVYBEHKNQTWZC'):
+        assert affine_encipher_letter(p, 3, 5, False) == c
+
+
+def test_decipher_letter():
+    for p, c in zip(
+            string.ascii_letters, 
+            'hknqtwzcfiloruxadgjmpsvybeHKNQTWZCFILORUXADGJMPSVYBE'):
+        assert affine_decipher_letter(c, 3, 5, True) == p
+
+    for p, c in zip(
+            string.ascii_letters, 
+            'filoruxadgjmpsvybehknqtwzcFILORUXADGJMPSVYBEHKNQTWZC'):
+        assert affine_decipher_letter(c, 3, 5, False) == p
+
+def test_encipher_message():
+    enciphered = affine_encipher(
+            'hours passed during which jerico tried every trick he could think of', 
+            15, 22, True)
+    expected = 'lmyfu bkuusd dyfaxw claol psfaom jfasd snsfg jfaoe ls omytd jlaxe mh'
+    assert enciphered == expected
+
+
+def test_decipher_message():
+
+    deciphered = affine_decipher('lmyfu bkuusd dyfaxw claol psfaom jfasd snsfg jfaoe ls omytd jlaxe mh', 
+                15, 22, True)
+    expected = 'hours passed during which jerico tried every trick he could think of'
+    assert deciphered == expected
+
+
+def test_break():
+    ciphertext = '''lmyfu bkuusd dyfaxw claol psfaom jfasd snsfg jfaoe ls 
+      omytd jlaxe mh jm bfmibj umis hfsul axubafkjamx. ls kffkxwsd jls 
+      ofgbjmwfkiu olfmxmtmwaokttg jlsx ls kffkxwsd jlsi zg tsxwjl. jlsx 
+      ls umfjsd jlsi zg hfsqysxog. ls dmmdtsd mx jls bats mh bkbsf. ls 
+      bfmctsd kfmyxd jls lyj, mztanamyu xmc jm clm cku tmmeaxw kj lai 
+      kxd clm ckuxj.'''
+    expected_key = (15, 22, True)
+    expected_score = -340.6011819
+    actual_key, actual_score = affine_break(ciphertext)
+    assert expected_key == actual_key
+    assert expected_score == pytest.approx(actual_score)