Add tests to morse_code.py (#5337)

* Add tests to morse_code.py

@dhruvmanila @poyea Your reviews, please.

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

DIRECTORY.md

@@ -53,6 +53,7 @@
   * [A1Z26](https://github.com/TheAlgorithms/Python/blob/master/ciphers/a1z26.py)
   * [Affine Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/affine_cipher.py)
   * [Atbash](https://github.com/TheAlgorithms/Python/blob/master/ciphers/atbash.py)
+  * [Baconian Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/baconian_cipher.py)
   * [Base16](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base16.py)
   * [Base32](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base32.py)
   * [Base64 Encoding](https://github.com/TheAlgorithms/Python/blob/master/ciphers/base64_encoding.py)
@@ -70,7 +71,7 @@
   * [Hill Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/hill_cipher.py)
   * [Mixed Keyword Cypher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/mixed_keyword_cypher.py)
   * [Mono Alphabetic Ciphers](https://github.com/TheAlgorithms/Python/blob/master/ciphers/mono_alphabetic_ciphers.py)
-  * [Morse Code Implementation](https://github.com/TheAlgorithms/Python/blob/master/ciphers/morse_code_implementation.py)
+  * [Morse Code](https://github.com/TheAlgorithms/Python/blob/master/ciphers/morse_code.py)
   * [Onepad Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/onepad_cipher.py)
   * [Playfair Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/playfair_cipher.py)
   * [Porta Cipher](https://github.com/TheAlgorithms/Python/blob/master/ciphers/porta_cipher.py)
@@ -328,10 +329,12 @@
   * [Graph Matrix](https://github.com/TheAlgorithms/Python/blob/master/graphs/graph_matrix.py)
   * [Graphs Floyd Warshall](https://github.com/TheAlgorithms/Python/blob/master/graphs/graphs_floyd_warshall.py)
   * [Greedy Best First](https://github.com/TheAlgorithms/Python/blob/master/graphs/greedy_best_first.py)
+  * [Greedy Min Vertex Cover](https://github.com/TheAlgorithms/Python/blob/master/graphs/greedy_min_vertex_cover.py)
   * [Kahns Algorithm Long](https://github.com/TheAlgorithms/Python/blob/master/graphs/kahns_algorithm_long.py)
   * [Kahns Algorithm Topo](https://github.com/TheAlgorithms/Python/blob/master/graphs/kahns_algorithm_topo.py)
   * [Karger](https://github.com/TheAlgorithms/Python/blob/master/graphs/karger.py)
   * [Markov Chain](https://github.com/TheAlgorithms/Python/blob/master/graphs/markov_chain.py)
+  * [Matching Min Vertex Cover](https://github.com/TheAlgorithms/Python/blob/master/graphs/matching_min_vertex_cover.py)
   * [Minimum Spanning Tree Boruvka](https://github.com/TheAlgorithms/Python/blob/master/graphs/minimum_spanning_tree_boruvka.py)
   * [Minimum Spanning Tree Kruskal](https://github.com/TheAlgorithms/Python/blob/master/graphs/minimum_spanning_tree_kruskal.py)
   * [Minimum Spanning Tree Kruskal2](https://github.com/TheAlgorithms/Python/blob/master/graphs/minimum_spanning_tree_kruskal2.py)
@@ -497,6 +500,7 @@
   * [Prime Numbers](https://github.com/TheAlgorithms/Python/blob/master/maths/prime_numbers.py)
   * [Prime Sieve Eratosthenes](https://github.com/TheAlgorithms/Python/blob/master/maths/prime_sieve_eratosthenes.py)
   * [Primelib](https://github.com/TheAlgorithms/Python/blob/master/maths/primelib.py)
+  * [Proth Number](https://github.com/TheAlgorithms/Python/blob/master/maths/proth_number.py)
   * [Pythagoras](https://github.com/TheAlgorithms/Python/blob/master/maths/pythagoras.py)
   * [Qr Decomposition](https://github.com/TheAlgorithms/Python/blob/master/maths/qr_decomposition.py)
   * [Quadratic Equations Complex Numbers](https://github.com/TheAlgorithms/Python/blob/master/maths/quadratic_equations_complex_numbers.py)
@@ -951,6 +955,7 @@
   * [Current Stock Price](https://github.com/TheAlgorithms/Python/blob/master/web_programming/current_stock_price.py)
   * [Current Weather](https://github.com/TheAlgorithms/Python/blob/master/web_programming/current_weather.py)
   * [Daily Horoscope](https://github.com/TheAlgorithms/Python/blob/master/web_programming/daily_horoscope.py)
+  * [Download Images From Google Query](https://github.com/TheAlgorithms/Python/blob/master/web_programming/download_images_from_google_query.py)
   * [Emails From Url](https://github.com/TheAlgorithms/Python/blob/master/web_programming/emails_from_url.py)
   * [Fetch Bbc News](https://github.com/TheAlgorithms/Python/blob/master/web_programming/fetch_bbc_news.py)
   * [Fetch Github Info](https://github.com/TheAlgorithms/Python/blob/master/web_programming/fetch_github_info.py)

ciphers/morse_code.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+
+"""
+Python program to translate to and from Morse code.
+
+https://en.wikipedia.org/wiki/Morse_code
+"""
+
+# fmt: off
+MORSE_CODE_DICT = {
+    "A": ".-", "B": "-...", "C": "-.-.", "D": "-..", "E": ".", "F": "..-.", "G": "--.",
+    "H": "....", "I": "..", "J": ".---", "K": "-.-", "L": ".-..", "M": "--", "N": "-.",
+    "O": "---", "P": ".--.", "Q": "--.-", "R": ".-.", "S": "...", "T": "-", "U": "..-",
+    "V": "...-", "W": ".--", "X": "-..-", "Y": "-.--", "Z": "--..", "1": ".----",
+    "2": "..---", "3": "...--", "4": "....-", "5": ".....", "6": "-....", "7": "--...",
+    "8": "---..", "9": "----.", "0": "-----", "&": ".-...", "@": ".--.-.",
+    ":": "---...", ",": "--..--", ".": ".-.-.-", "'": ".----.", '"': ".-..-.",
+    "?": "..--..", "/": "-..-.", "=": "-...-", "+": ".-.-.", "-": "-....-",
+    "(": "-.--.", ")": "-.--.-", "!": "-.-.--", " ": "/"
+}  # Exclamation mark is not in ITU-R recommendation
+# fmt: on
+REVERSE_DICT = {value: key for key, value in MORSE_CODE_DICT.items()}
+
+
+def encrypt(message: str) -> str:
+    """
+    >>> encrypt("Sos!")
+    '... --- ... -.-.--'
+    >>> encrypt("SOS!") == encrypt("sos!")
+    True
+    """
+    return " ".join(MORSE_CODE_DICT[char] for char in message.upper())
+
+
+def decrypt(message: str) -> str:
+    """
+    >>> decrypt('... --- ... -.-.--')
+    'SOS!'
+    """
+    return "".join(REVERSE_DICT[char] for char in message.split())
+
+
+def main() -> None:
+    """
+    >>> s = "".join(MORSE_CODE_DICT)
+    >>> decrypt(encrypt(s)) == s
+    True
+    """
+    message = "Morse code here!"
+    print(message)
+    message = encrypt(message)
+    print(message)
+    message = decrypt(message)
+    print(message)
+
+
+if __name__ == "__main__":
+    main()

ciphers/morse_code_implementation.py

@@ -1,97 +0,0 @@
-# Python program to implement Morse Code Translator
-
-# Dictionary representing the morse code chart
-MORSE_CODE_DICT = {
-    "A": ".-",
-    "B": "-...",
-    "C": "-.-.",
-    "D": "-..",
-    "E": ".",
-    "F": "..-.",
-    "G": "--.",
-    "H": "....",
-    "I": "..",
-    "J": ".---",
-    "K": "-.-",
-    "L": ".-..",
-    "M": "--",
-    "N": "-.",
-    "O": "---",
-    "P": ".--.",
-    "Q": "--.-",
-    "R": ".-.",
-    "S": "...",
-    "T": "-",
-    "U": "..-",
-    "V": "...-",
-    "W": ".--",
-    "X": "-..-",
-    "Y": "-.--",
-    "Z": "--..",
-    "1": ".----",
-    "2": "..---",
-    "3": "...--",
-    "4": "....-",
-    "5": ".....",
-    "6": "-....",
-    "7": "--...",
-    "8": "---..",
-    "9": "----.",
-    "0": "-----",
-    "&": ".-...",
-    "@": ".--.-.",
-    ":": "---...",
-    ",": "--..--",
-    ".": ".-.-.-",
-    "'": ".----.",
-    '"': ".-..-.",
-    "?": "..--..",
-    "/": "-..-.",
-    "=": "-...-",
-    "+": ".-.-.",
-    "-": "-....-",
-    "(": "-.--.",
-    ")": "-.--.-",
-    # Exclamation mark is not in ITU-R recommendation
-    "!": "-.-.--",
-}
-
-
-def encrypt(message: str) -> str:
-    cipher = ""
-    for letter in message:
-        if letter != " ":
-            cipher += MORSE_CODE_DICT[letter] + " "
-        else:
-            cipher += "/ "
-
-    # Remove trailing space added on line 64
-    return cipher[:-1]
-
-
-def decrypt(message: str) -> str:
-    decipher = ""
-    letters = message.split(" ")
-    for letter in letters:
-        if letter != "/":
-            decipher += list(MORSE_CODE_DICT.keys())[
-                list(MORSE_CODE_DICT.values()).index(letter)
-            ]
-        else:
-            decipher += " "
-
-    return decipher
-
-
-def main() -> None:
-    message = "Morse code here"
-    result = encrypt(message.upper())
-    print(result)
-
-    message = result
-    result = decrypt(message)
-    print(result)
-
-
-if __name__ == "__main__":
-    main()