[REFACTOR] [Hacker Rank] Interview Preparation Kit: String Manipulation: Alternating Characters. JSON data load for unit tests.

Author: Gonzalo Diaz

src/hackerrank/interview_preparation_kit/string_manipulation/alternating_characters.testcases.json

@@ -0,0 +1,53 @@
+[
+  {
+    "title": "Sample Test case 0",
+    "tests": [
+      {
+        "input": "AAAA",
+        "expected": 3
+      },
+      {
+        "input": "BBBBB",
+        "expected": 4
+      },
+      {
+        "input": "ABABABAB",
+        "expected": 0
+      },
+      {
+        "input": "BABABA",
+        "expected": 0
+      },
+      {
+        "input": "AAABBB",
+        "expected": 4
+      }
+    ]
+  },
+  {
+    "title": "Sample Test case 13",
+    "tests": [
+      {
+        "input": "AAABBBAABB",
+        "expected": 6
+      },
+      {
+        "input": "AABBAABB",
+        "expected": 4
+      },
+      {
+        "input": "ABABABAA",
+        "expected": 1
+      }
+    ]
+  },
+  {
+    "title": "Sample Test case 14",
+    "tests": [
+      {
+        "input": "ABBABBAA",
+        "expected": 3
+      }
+    ]
+  }
+]

src/hackerrank/interview_preparation_kit/string_manipulation/alternating_characters_test.py

@@ -1,59 +1,12 @@
 import unittest
+from pathlib import Path
+
+from ....hackerrank.lib.loader import load_test_cases
 from .alternating_characters import alternating_characters
 
-TEST_CASES = [
-    {
-        'title': 'Sample Test case 0',
-        'tests': [
-            {
-                'input': 'AAAA',
-                'answer': 3
-            },
-            {
-                'input': 'BBBBB',
-                'answer': 4
-            },
-            {
-                'input': 'ABABABAB',
-                'answer': 0
-            },
-            {
-                'input': 'BABABA',
-                'answer': 0
-            },
-            {
-                'input': 'AAABBB',
-                'answer': 4
-            }
-        ]
-    },
-    {
-        'title': 'Sample Test case 13',
-        'tests': [
-            {
-                'input': 'AAABBBAABB',
-                'answer': 6
-            },
-            {
-                'input': 'AABBAABB',
-                'answer': 4
-            },
-            {
-                'input': 'ABABABAA',
-                'answer': 1
-            }
-        ]
-    },
-    {
-        'title': 'Sample Test case 14',
-        'tests': [
-            {
-                'input': 'ABBABBAA',
-                'answer': 3
-            }
-        ]
-    }
-]
+FILE_PATH = str(Path(__file__).resolve().parent)
+
+TEST_CASES = load_test_cases(FILE_PATH + '/alternating_characters.testcases.json')
 
 
 class TestAlternatingCharacters(unittest.TestCase):
@@ -65,6 +18,6 @@ def test_alternating_characters(self):
             for _, _tt in enumerate(testset['tests']):
 
                 self.assertEqual(
-                    alternating_characters(_tt['input']), _tt['answer'],
+                    alternating_characters(_tt['input']), _tt['expected'],
                     f"{_} | alternating_characters({_tt['input']}) must be "
-                    f"=> {_tt['answer']}")
+                    f"=> {_tt['expected']}")