test: test cases for kata Most frequently used words in a text

README.md

@@ -32,3 +32,4 @@ Repository for CDS-2020 Programming and Promt Engineering II
 |Snail|kata_snail.py|test_snail.py|[521c2db8ddc89b9b7a0000c1](https://www.codewars.com/kata/521c2db8ddc89b9b7a0000c1)|
 |Chinese Numeral Encoder|kata_chinese_numeral_encoder.py|test_chinese_numeral_encoder.py|[52608f5345d4a19bed000b31](https://www.codewars.com/kata/52608f5345d4a19bed000b31)|
 |RGB To Hex Conversion|kata_rgb_2_hex.py|test_rgb_2_hex.py|[513e08acc600c94f01000001](https://www.codewars.com/kata/513e08acc600c94f01000001)|
+|Most frequently used words in a text|kata_most_words_used.py|test_most_words_used.py|[51e056fe544cf36c410000fb](https://www.codewars.com/kata/51e056fe544cf36c410000fb|

src/codewars/kata_most_words_used.py

@@ -0,0 +1,2 @@
+def top_3_words(text):
+    return None

tests/test_codewars/test_most_words_used.py

@@ -0,0 +1,5 @@
+from src.codewars.kata_most_words_used import top_3_words
+
+
+def test_top_3_words():
+    assert top_3_words() == 0