#9943 : adding some coverage for string

Author: Scarfinos

strings/barcode_validator.py

@@ -59,6 +59,10 @@ def get_barcode(barcode: str) -> int:
 
     >>> get_barcode("8718452538119")
     8718452538119
+    >>> get_barcode("-367062129")
+    Traceback (most recent call last):
+        ...
+    ValueError: The entered barcode has a negative value. Try again.
     >>> get_barcode("dwefgiweuf")
     Traceback (most recent call last):
         ...

strings/can_string_be_rearranged_as_palindrome.py

@@ -14,6 +14,8 @@ def can_string_be_rearranged_as_palindrome_counter(
     """
     A Palindrome is a String that reads the same forward as it does backwards.
     Examples of Palindromes mom, dad, malayalam
+    >>> can_string_be_rearranged_as_palindrome("")
+    True
     >>> can_string_be_rearranged_as_palindrome_counter("Momo")
     True
     >>> can_string_be_rearranged_as_palindrome_counter("Mother")

strings/check_anagrams.py

@@ -9,6 +9,8 @@ def check_anagrams(first_str: str, second_str: str) -> bool:
     """
     Two strings are anagrams if they are made up of the same letters but are
     arranged differently (ignoring the case).
+    >>> check_anagrams('This', 'These')
+    False
     >>> check_anagrams('Silent', 'Listen')
     True
     >>> check_anagrams('This is a string', 'Is this a string')

strings/count_vowels.py

@@ -6,6 +6,14 @@ def count_vowels(s: str) -> int:
     :return: Number of vowels in the input string.
 
     Examples:
+    >>> count_vowels(10)
+    Traceback (most recent call last):
+    ...
+    ValueError: Input must be a string
+    >>> count_vowels(True)
+    Traceback (most recent call last):
+    ...
+    ValueError: Input must be a string
     >>> count_vowels("hello world")
     3
     >>> count_vowels("HELLO WORLD")

strings/credit_card_validator.py

@@ -27,6 +27,8 @@ def luhn_validation(credit_card_number: str) -> bool:
     True
     >>> luhn_validation('41111111111111')
     False
+    >>> luhn_validation('4678001415')
+    True
     """
     cc_number = credit_card_number
     total = 0

strings/is_valid_email_address.py

@@ -32,6 +32,11 @@
     ),
     ("i.like.underscores@but_its_not_allowed_in_this_part", False),
     ("", False),
+    (".startdot@example", False),
+    ("enddot.@example", False),
+    ("double..dot@example", False),
+    ("example@-dashstart", False),
+    ("example@dashend-", False),
 )
 
 # The maximum octets (one character as a standard unicode character is one byte)
@@ -97,7 +102,7 @@ def is_valid_email_address(email: str) -> bool:
         return False
 
     # (6.) Validate the placement of "-" characters
-    if domain.startswith("-") or domain.endswith("."):
+    if domain.startswith("-") or domain.endswith("-"):
         return False
 
     # (7.) Validate the placement of "." characters

strings/min_cost_string_conversion.py

@@ -91,6 +91,14 @@ def assemble_transformation(ops: list[list[str]], i: int, j: int) -> list[str]:
     >>> y1 = len(ops1[0]) - 1
     >>> assemble_transformation(ops1, x1, y1)
     []
+
+    >>> ops2 = [['0', 'Ic', 'Iu'],
+    ...        ['Da', 'Da', 'Rau'],
+    ...        ['Dt', 'Dt', 'Rtu']]
+    >>> x2 = len(ops2) - 1
+    >>> y2 = len(ops2[0]) - 1
+    >>> assemble_transformation(ops2, x2, y2)
+    ['Ic', 'Da', 'Rtu']
     """
     if i == 0 and j == 0:
         return []

strings/string_switch_case.py

@@ -88,6 +88,8 @@ def to_pascal_case(text: str) -> str:
 
 def to_camel_case(text: str) -> str:
     """
+    >>> to_camel_case("")
+    'not valid string'
     >>> to_camel_case("one two 31235three4four")
     'oneTwo31235three4four'
     """