[REFACTOR] [Hacker Rank] Interview Preparation Kit: Search: Swap Nodes [Algo]. JSON data load for unit tests.

Author: Gonzalo Diaz

src/hackerrank/interview_preparation_kit/search/swap_nodes_algo.testcases.json

@@ -0,0 +1,31 @@
+[
+  {
+    "title": "Sample 0",
+    "nodes": [[2, 3], [-1, -1], [-1, -1]],
+    "queries": [1, 1],
+    "answer": [[3, 1, 2], [2, 1, 3]]
+  },
+  {
+    "title": "Sample 1",
+    "nodes": [[2, 3], [-1, 4], [-1, 5], [-1, -1], [-1, -1]],
+    "queries": [2],
+    "answer": [[4, 2, 1, 5, 3]]
+  },
+  {
+    "title": "Sample 2",
+    "nodes": [[2, 3], [4, -1], [5, -1], [6, -1], [7, 8], [-1, 9],
+          [-1, -1], [10, 11], [-1, -1], [-1, -1], [-1, -1]],
+    "queries": [2, 4],
+    "answer": [[2, 9, 6, 4, 1, 3, 7, 5, 11, 8, 10],
+          [2, 6, 9, 4, 1, 3, 7, 5, 10, 8, 11]]
+  },
+  {
+    "title": "Sample Test Case 1",
+    "nodes": [[2, 3], [4, 5], [6, -1], [-1, 7], [8, 9], [10, 11], [12, 13],
+          [-1, 14], [-1, -1], [15, -1], [16, 17], [-1, -1], [-1, -1],
+          [-1, -1], [-1, -1], [-1, -1], [-1, -1]],
+    "queries": [2, 3],
+    "answer": [[14, 8, 5, 9, 2, 4, 13, 7, 12, 1, 3, 10, 15, 6, 17, 11, 16],
+          [9, 5, 14, 8, 2, 13, 7, 12, 4, 1, 3, 17, 11, 16, 6, 10, 15]]
+  }
+]

src/hackerrank/interview_preparation_kit/search/swap_nodes_algo_test.py

@@ -1,44 +1,18 @@
 import unittest
+from pathlib import Path
+
+from ....hackerrank.lib.loader import load_test_cases
 from .swap_nodes_algo import swap_nodes, build_tree, plain_tree, swap_branch
 
+FILE_PATH = str(Path(__file__).resolve().parent)
+TEST_CASES = load_test_cases(FILE_PATH + '/swap_nodes_algo.testcases.json')
 
-class TestSwapNodesAlgo(unittest.TestCase):
 
-    tests = [
-        {
-            'title': 'Sample 0',
-            'nodes': [[2, 3], [-1, -1], [-1, -1]],
-            'queries': [1, 1],
-            'answer': [[3, 1, 2], [2, 1, 3]]
-        },
-        {
-            'title': 'Sample 1',
-            'nodes': [[2, 3], [-1, 4], [-1, 5], [-1, -1], [-1, -1]],
-            'queries': [2],
-            'answer': [[4, 2, 1, 5, 3]]
-        },
-        {
-            'title': 'Sample 2',
-            'nodes': [[2, 3], [4, -1], [5, -1], [6, -1], [7, 8], [-1, 9],
-                      [-1, -1], [10, 11], [-1, -1], [-1, -1], [-1, -1]],
-            'queries': [2, 4],
-            'answer': [[2, 9, 6, 4, 1, 3, 7, 5, 11, 8, 10],
-                       [2, 6, 9, 4, 1, 3, 7, 5, 10, 8, 11]]
-        },
-        {
-            'title': 'Sample Test Case 1',
-            'nodes': [[2, 3], [4, 5], [6, -1], [-1, 7], [8, 9], [10, 11], [12, 13],
-                      [-1, 14], [-1, -1], [15, -1], [16, 17], [-1, -1], [-1, -1],
-                      [-1, -1], [-1, -1], [-1, -1], [-1, -1]],
-            'queries': [2, 3],
-            'answer': [[14, 8, 5, 9, 2, 4, 13, 7, 12, 1, 3, 10, 15, 6, 17, 11, 16],
-                       [9, 5, 14, 8, 2, 13, 7, 12, 4, 1, 3, 17, 11, 16, 6, 10, 15]]
-        }
-    ]
+class TestSwapNodesAlgo(unittest.TestCase):
 
     def test_swap_nodes(self):
 
-        for _, _tt in enumerate(self.tests):
+        for _, _tt in enumerate(TEST_CASES):
 
             self.assertEqual(
                 swap_nodes(_tt['nodes'], _tt['queries']), _tt['answer'],