From 7ca85a871d2ce1553a7d2bbb4b0999ed46d0a692 Mon Sep 17 00:00:00 2001
From: Claudio Maggioni <maggicl@usi.ch>
Date: Sat, 9 Dec 2023 14:43:29 +0100
Subject: [PATCH] test run (partial)

---
 tests/anagram_check.py         |  20 ++++++
 tests/cd_count.py              |  23 ++++++
 tests/check_armstrong.py       |  20 ++++++
 tests/decrypt.py               |   8 +++
 tests/encrypt.py               |  11 +++
 tests/exponentiation.py        |   8 +++
 tests/gcd.py                   |  20 ++++++
 tests/longest_sorted_substr.py |   8 +++
 tests/output.txt               | 127 +++++++++++++++++++++++++++++++++
 tests/rabin_karp_search.py     |  20 ++++++
 tests/raildecrypt.py           |  17 +++++
 11 files changed, 282 insertions(+)
 create mode 100644 tests/anagram_check.py
 create mode 100644 tests/cd_count.py
 create mode 100644 tests/check_armstrong.py
 create mode 100644 tests/decrypt.py
 create mode 100644 tests/encrypt.py
 create mode 100644 tests/exponentiation.py
 create mode 100644 tests/gcd.py
 create mode 100644 tests/longest_sorted_substr.py
 create mode 100644 tests/output.txt
 create mode 100644 tests/rabin_karp_search.py
 create mode 100644 tests/raildecrypt.py

diff --git a/tests/anagram_check.py b/tests/anagram_check.py
new file mode 100644
index 0000000..f3cc27b
--- /dev/null
+++ b/tests/anagram_check.py
@@ -0,0 +1,20 @@
+from unittest import TestCase
+
+from benchmark.anagram_check import anagram_check
+
+
+class Test_anagram_check(TestCase):
+    def test_anagram_check_1(self):
+        assert anagram_check(s1='B', s2='o8') == False
+
+    def test_anagram_check_2(self):
+        assert anagram_check(s1=' ', s2='u') == False
+
+    def test_anagram_check_3(self):
+        assert anagram_check(s1='', s2='') == True
+
+    def test_anagram_check_4(self):
+        assert anagram_check(s1='?8H', s2='') == False
+
+    def test_anagram_check_5(self):
+        assert anagram_check(s1='@m', s2='Pj') == False
\ No newline at end of file
diff --git a/tests/cd_count.py b/tests/cd_count.py
new file mode 100644
index 0000000..81b863e
--- /dev/null
+++ b/tests/cd_count.py
@@ -0,0 +1,23 @@
+from unittest import TestCase
+
+from benchmark.common_divisor_count import cd_count
+
+
+class Test_cd_count(TestCase):
+    def test_cd_count_1(self):
+        assert cd_count(a=-946, b=0) == 2
+
+    def test_cd_count_2(self):
+        assert cd_count(a=873, b=164) == 1
+
+    def test_cd_count_3(self):
+        assert cd_count(a=0, b=-90) == 2
+
+    def test_cd_count_4(self):
+        assert cd_count(a=783, b=-749) == 1
+
+    def test_cd_count_5(self):
+        assert cd_count(a=621, b=-23) == 2
+
+    def test_cd_count_6(self):
+        assert cd_count(a=-635, b=444) == 1
\ No newline at end of file
diff --git a/tests/check_armstrong.py b/tests/check_armstrong.py
new file mode 100644
index 0000000..cc42a7a
--- /dev/null
+++ b/tests/check_armstrong.py
@@ -0,0 +1,20 @@
+from unittest import TestCase
+
+from benchmark.check_armstrong import check_armstrong
+
+
+class Test_check_armstrong(TestCase):
+    def test_check_armstrong_1(self):
+        assert check_armstrong(n=370) == True
+
+    def test_check_armstrong_2(self):
+        assert check_armstrong(n=5) == False
+
+    def test_check_armstrong_3(self):
+        assert check_armstrong(n=1) == True
+
+    def test_check_armstrong_4(self):
+        assert check_armstrong(n=0) == True
+
+    def test_check_armstrong_5(self):
+        assert check_armstrong(n=346) == False
\ No newline at end of file
diff --git a/tests/decrypt.py b/tests/decrypt.py
new file mode 100644
index 0000000..33135e6
--- /dev/null
+++ b/tests/decrypt.py
@@ -0,0 +1,8 @@
+from unittest import TestCase
+
+from benchmark.caesar_cipher import decrypt
+
+
+class Test_decrypt(TestCase):
+    def test_decrypt_1(self):
+        assert decrypt(strng='\\nEGQ&', key=41) == '3E{}(ý'
\ No newline at end of file
diff --git a/tests/encrypt.py b/tests/encrypt.py
new file mode 100644
index 0000000..3d0bfb2
--- /dev/null
+++ b/tests/encrypt.py
@@ -0,0 +1,11 @@
+from unittest import TestCase
+
+from benchmark.caesar_cipher import encrypt
+
+
+class Test_encrypt(TestCase):
+    def test_encrypt_1(self):
+        assert encrypt(strng='ToU}[G4}', key=70) == ';V<dB.zd'
+
+    def test_encrypt_2(self):
+        assert encrypt(strng='Ja%b7$x?S', key=91) == 'F]!^3 t;O'
\ No newline at end of file
diff --git a/tests/exponentiation.py b/tests/exponentiation.py
new file mode 100644
index 0000000..d1a5f78
--- /dev/null
+++ b/tests/exponentiation.py
@@ -0,0 +1,8 @@
+from unittest import TestCase
+
+from benchmark.exponentiation import exponentiation
+
+
+class Test_exponentiation(TestCase):
+    def test_exponentiation_1(self):
+        assert exponentiation(baseNumber=-963, power=53) == -135579247021508037271506970896774862890401757444424074712158036994660498207857413507120369768136011010001454548485109484383268428282840962739680900835831388403
\ No newline at end of file
diff --git a/tests/gcd.py b/tests/gcd.py
new file mode 100644
index 0000000..b0c5680
--- /dev/null
+++ b/tests/gcd.py
@@ -0,0 +1,20 @@
+from unittest import TestCase
+
+from benchmark.gcd import gcd
+
+
+class Test_gcd(TestCase):
+    def test_gcd_1(self):
+        assert gcd(a=531, b=338) == 1
+
+    def test_gcd_2(self):
+        assert gcd(a=1, b=395) == 1
+
+    def test_gcd_3(self):
+        assert gcd(a=71, b=496) == 1
+
+    def test_gcd_4(self):
+        assert gcd(a=644, b=644) == 644
+
+    def test_gcd_5(self):
+        assert gcd(a=581, b=1) == 1
\ No newline at end of file
diff --git a/tests/longest_sorted_substr.py b/tests/longest_sorted_substr.py
new file mode 100644
index 0000000..8e90859
--- /dev/null
+++ b/tests/longest_sorted_substr.py
@@ -0,0 +1,8 @@
+from unittest import TestCase
+
+from benchmark.longest_substring import longest_sorted_substr
+
+
+class Test_longest_sorted_substr(TestCase):
+    def test_longest_sorted_substr_1(self):
+        assert longest_sorted_substr(s='YW|jsXG,u') == 'W|'
\ No newline at end of file
diff --git a/tests/output.txt b/tests/output.txt
new file mode 100644
index 0000000..1004ff2
--- /dev/null
+++ b/tests/output.txt
@@ -0,0 +1,127 @@
+/usr/local/bin/python3.10 /Volumes/Data/git/kse/project-02-python-test-generator-maggicl/genetic.py 
+Instrumenting: 10it [00:00, 722.61it/s]
+Generating tests:   0%|          | 0/12 [00:00<?, ?it/s]
+anagram_check: rep #00: Cov: 87.50% (7/8 branches): 1F 1T 2F 2T 3F 3T 4F
+anagram_check: rep #01: Cov: 87.50% (7/8 branches): 1F 1T 2F 2T 3F 3T 4F
+anagram_check: rep #02: Cov: 100.00% (8/8 branches): 1F 1T 2F 2T 3F 3T 4F 4T
+anagram_check: rep #03: Cov: 87.50% (7/8 branches): 1F 1T 2F 2T 3F 3T 4F
+anagram_check: rep #04: Cov: 87.50% (7/8 branches): 1F 1T 2F 2T 3F 3T 4F
+anagram_check: rep #05: Cov: 87.50% (7/8 branches): 1F 1T 2F 2T 3F 3T 4F
+anagram_check: rep #06: Cov: 100.00% (8/8 branches): 1F 1T 2F 2T 3F 3T 4F 4T
+anagram_check: rep #07: Cov: 100.00% (8/8 branches): 1F 1T 2F 2T 3F 3T 4F 4T
+anagram_check: rep #08: Cov: 87.50% (7/8 branches): 1F 1T 2F 2T 3F 3T 4F
+anagram_check: rep #09: Cov: 100.00% (8/8 branches): 1F 1T 2F 2T 3F 3T 4F 4T
+[87.5, 87.5, 100.0, 87.5, 87.5, 87.5, 100.0, 100.0, 87.5, 100.0]
+Generating tests:   8%|▊         | 1/12 [01:05<12:02, 65.64s/it]
+cd_count: rep #00: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #01: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #02: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #03: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #04: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #05: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #06: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #07: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #08: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+cd_count: rep #09: Cov: 100.00% (14/14 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T 6F 6T 7F 7T
+[100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0]
+Generating tests:  17%|█▋        | 2/12 [02:30<12:50, 77.04s/it]
+check_armstrong: rep #00: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #01: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #02: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #03: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #04: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #05: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #06: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #07: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #08: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+check_armstrong: rep #09: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+[100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0]
+Generating tests:  25%|██▌       | 3/12 [03:36<10:45, 71.73s/it]
+decrypt: rep #00: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #01: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #02: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #03: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #04: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #05: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #06: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #07: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #08: Cov: 100.00% (2/2 branches): 2F 2T
+decrypt: rep #09: Cov: 100.00% (2/2 branches): 2F 2T
+[100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0]
+Generating tests:  33%|███▎      | 4/12 [04:49<09:40, 72.50s/it]
+encrypt: rep #00: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #01: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #02: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #03: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #04: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #05: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #06: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #07: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #08: Cov: 100.00% (2/2 branches): 1F 1T
+encrypt: rep #09: Cov: 100.00% (2/2 branches): 1F 1T
+[100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0]
+Generating tests:  42%|████▏     | 5/12 [06:04<08:31, 73.13s/it]
+exponentiation: rep #00: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #01: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #02: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #03: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #04: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #05: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #06: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #07: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+exponentiation: rep #08: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+Generating tests:  50%|█████     | 6/12 [07:50<08:26, 84.43s/it]
+exponentiation: rep #09: Cov: 62.50% (5/8 branches): 1F 1T 2F 2T 3T
+[62.5, 62.5, 62.5, 62.5, 62.5, 62.5, 62.5, 62.5, 62.5, 62.5]
+gcd: rep #00: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #01: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #02: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #03: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #04: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #05: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #06: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #07: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #08: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+gcd: rep #09: Cov: 100.00% (10/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F 5T
+[100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0]
+Generating tests:  58%|█████▊    | 7/12 [09:09<06:52, 82.57s/it]
+longest_sorted_substr: rep #00: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #01: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #02: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #03: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #04: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #05: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #06: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #07: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+longest_sorted_substr: rep #08: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+Generating tests:  67%|██████▋   | 8/12 [10:19<05:15, 78.78s/it]
+longest_sorted_substr: rep #09: Cov: 100.00% (4/4 branches): 1F 1T 2F 2T
+[100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0, 100.0]
+rabin_karp_search: rep #00: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #01: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #02: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #03: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #04: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #05: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #06: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #07: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #08: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+rabin_karp_search: rep #09: Cov: 90.00% (9/10 branches): 1F 1T 2F 2T 3F 3T 4F 4T 5F
+[90.0, 90.0, 90.0, 90.0, 90.0, 90.0, 90.0, 90.0, 90.0, 90.0]
+Generating tests:  75%|███████▌  | 9/12 [11:32<03:50, 76.96s/it]
+raildecrypt: rep #00: Cov: 87.50% (14/16 branches): 5F 5T 6F 6T 7F 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #01: Cov: 93.75% (15/16 branches): 5F 5T 6F 6T 7F 7T 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #02: Cov: 93.75% (15/16 branches): 5F 5T 6F 6T 7F 7T 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #03: Cov: 87.50% (14/16 branches): 5F 5T 6F 6T 7F 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #04: Cov: 87.50% (14/16 branches): 5F 5T 6F 6T 7F 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #05: Cov: 87.50% (14/16 branches): 5F 5T 6F 6T 7F 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #06: Cov: 93.75% (15/16 branches): 5F 5T 6F 6T 7F 7T 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #07: Cov: 93.75% (15/16 branches): 5F 5T 6F 6T 7F 7T 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #08: Cov: 93.75% (15/16 branches): 5F 5T 6F 6T 7F 7T 8F 8T 9T 10F 10T 11F 11T 12F 12T
+raildecrypt: rep #09: Cov: 68.75% (11/16 branches): 5T 6F 6T 8F 8T 9T 10F 10T 11F 11T 12T
+[87.5, 93.75, 93.75, 87.5, 87.5, 87.5, 93.75, 93.75, 93.75, 68.75]
+Generating tests:  83%|████████▎ | 10/12 [17:25<05:24, 162.00s/it]
+railencrypt: rep #00: Cov: 100.00% (8/8 branches): 1F 1T 2F 2T 3F 3T 4F 4T
+railencrypt: rep #01: Cov: 100.00% (8/8 branches): 1F 1T 2F 2T 3F 3T 4F 4T
+railencrypt: rep #02: Cov: 62.50% (5/8 branches): 1T 2F 2T 4F 4T
+railencrypt: rep #03: Cov: 100.00% (8/8 branches): 1F 1T 2F 2T 3F 3T 4F 4T
diff --git a/tests/rabin_karp_search.py b/tests/rabin_karp_search.py
new file mode 100644
index 0000000..5bcb5c8
--- /dev/null
+++ b/tests/rabin_karp_search.py
@@ -0,0 +1,20 @@
+from unittest import TestCase
+
+from benchmark.rabin_karp import rabin_karp_search
+
+
+class Test_rabin_karp_search(TestCase):
+    def test_rabin_karp_search_1(self):
+        assert rabin_karp_search(pat='', txt='m 2') == []
+
+    def test_rabin_karp_search_2(self):
+        assert rabin_karp_search(pat='.w5', txt='55[Ax5X') == []
+
+    def test_rabin_karp_search_3(self):
+        assert rabin_karp_search(pat='h@=y', txt='JcEC') == []
+
+    def test_rabin_karp_search_4(self):
+        assert rabin_karp_search(pat='X', txt='J@X"') == [2]
+
+    def test_rabin_karp_search_5(self):
+        assert rabin_karp_search(pat='>0OPQ', txt='Dzxu8:(P') == []
\ No newline at end of file
diff --git a/tests/raildecrypt.py b/tests/raildecrypt.py
new file mode 100644
index 0000000..aadc14e
--- /dev/null
+++ b/tests/raildecrypt.py
@@ -0,0 +1,17 @@
+from unittest import TestCase
+
+from benchmark.railfence_cipher import raildecrypt
+
+
+class Test_raildecrypt(TestCase):
+    def test_raildecrypt_1(self):
+        assert raildecrypt(st='q338K a{.', k=9) == 'q338K a{.'
+
+    def test_raildecrypt_2(self):
+        assert raildecrypt(st='q338K a{.', k=3) == 'q8{K3 .a3'
+
+    def test_raildecrypt_3(self):
+        assert raildecrypt(st='Hi=BC/', k=557) == 'Hi=BC/'
+
+    def test_raildecrypt_4(self):
+        assert raildecrypt(st='X61*8p', k=5) == 'X61*p8'
\ No newline at end of file