anagram checker with tests

Author: Matthew Shirtliffe

anagram_checker/app.py

@@ -0,0 +1,58 @@
+
+
+def print_header():
+    """ Print header 
+    """
+    header_text = ''
+    TEXT = f' Anagram Checker \n'
+    line = '-' * len(TEXT)
+    line += '\n'
+
+    header_text += line
+    header_text += TEXT
+    header_text += line
+    print(header_text)
+
+
+def prompt_get_strings():
+    print('Enter two strings and I\'ll tell you if they\nare anagrams: ')
+
+
+def get_first_string():
+
+    while True:
+        first_string = input('Enter the first string: ')
+        
+        if len(first_string) >=3:
+            return first_string
+        else:
+            print('A valid input is required')
+
+
+def get_second_string():
+
+    while True:
+        second_string = input('Enter the second string: ')
+        
+        if len(second_string) >=3:
+            return second_string
+        else:
+            print('A valid input is required')
+
+
+def is_anagram(first_string, second_string):
+
+    return sorted(first_string) == sorted(second_string) 
+
+
+def print_is_anagram(first_string, second_string):
+    if(is_anagram(first_string, second_string)):
+        print(f'{first_string} and {second_string} are anagrams.')
+
+if __name__ == "__main__":
+    
+    print_header()
+    prompt_get_strings()
+    first_string = get_first_string()
+    second_string = get_second_string()
+    print_is_anagram(first_string, second_string)

anagram_checker/tests/__init__.py

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+from unittest import TestCase
+from unittest.mock import patch
+import app
+
+class AppTest(TestCase):
+
+    def test_print_header(self):
+        
+        expected = '------------------\n Anagram Checker \n------------------\n'
+        with patch('builtins.print') as mocked_print:
+            app.print_header()
+            mocked_print.assert_called_with(expected)
+
+    def test_prompt_get_strings(self):
+
+        expected = 'Enter two strings and I\'ll tell you if they\nare anagrams: '
+        with patch('builtins.print') as mocked_print:
+            app.prompt_get_strings()
+            mocked_print.assert_called_with(expected)
+    
+    def test_get_first_string(self):
+
+        expected = 'Enter the first string: '
+        with patch('builtins.input') as mocked_input:
+            with patch('builtins.print') as mocked_print:
+                mocked_input.side_effect = ('' , 'note')
+                first_string = app.get_first_string()
+                mocked_print.assert_called_with('A valid input is required')
+                mocked_input.assert_called_with(expected)
+                self.assertEqual(first_string, 'note')
+
+    def test_get_first_string(self):
+
+        expected = 'Enter the second string: '
+        with patch('builtins.input') as mocked_input:
+            with patch('builtins.print') as mocked_print:
+                mocked_input.side_effect = ('' , 'tone')
+                second_string = app.get_second_string()
+                mocked_print.assert_called_with('A valid input is required')
+                mocked_input.assert_called_with(expected)
+                self.assertEqual(second_string, 'tone')
+
+
+    def test_print_is_anagram(self):
+
+        first_string = 'note'
+        second_string = 'tone'
+
+        expected = f'{first_string} and {second_string} are anagrams.'
+        with patch('builtins.print') as mocked_print:
+            app.print_is_anagram(first_string, second_string)
+            mocked_print.assert_called_with(expected)

anagram_checker/tests/system/__init__.py

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+from unittest import TestCase
+import app
+
+class AnagramTest(TestCase):
+    
+    def test_is_anagram(self):
+        is_anagram = app.is_anagram('tone', 'note')
+        self.assertTrue(is_anagram)