Added testing file

hard/longest_increasing_subsequence/longest_increasing_subsequence.py

@@ -1,6 +1,6 @@
 import json
 
-def longestIncreasingSubsequence(nums):
+def longest_increasing_subsequence(nums):
     """
     Returns length of longest increasing subsequence given an array of numbers.
     """
@@ -33,7 +33,7 @@ def longestIncreasingSubsequence(nums):
         testNumber = d['desc']
         args = d['args'][0]
         expected = d['res']
-        actual = longestIncreasingSubsequence(args)
+        actual = longest_increasing_subsequence(args)
         if not actual == expected:
             failedTests.append(testNumber)
         allTestsPass = actual == expected and allTestsPass

hard/longest_increasing_subsequence/tests.json

@@ -1,22 +1,25 @@
-[
-  {
-    "desc": 1,
-    "args": [[0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15]],
-    "res": 6
-  },
-  {
-    "desc": 2,
-    "args": [[1, 2, 3, 4, 5]],
-    "res": 5
-  },
-  {
-    "desc": 3,
-    "args": [[1, 2, 0, 4, 5]],
-    "res": 4
-  },
-  {
-    "desc": 4,
-    "args": [[1, 2, 0, -4, 5]],
-    "res": 3
-  }
-]
+{
+  "title": "longest_increasing_subsequence",
+  "tests": [
+    {
+      "desc": 1,
+      "args": [[0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15]],
+      "res": 6
+    },
+    {
+      "desc": 2,
+      "args": [[1, 2, 3, 4, 5]],
+      "res": 5
+    },
+    {
+      "desc": 3,
+      "args": [[1, 2, 0, 4, 5]],
+      "res": 4
+    },
+    {
+      "desc": 4,
+      "args": [[1, 2, 0, -4, 5]],
+      "res": 3
+    }
+  ]
+}

tests.py

@@ -0,0 +1,32 @@
+import os, json, sys
+from hard.longest_increasing_subsequence.longest_increasing_subsequence import *
+tests_to_run = []
+
+# Walk through directories, and look for tests.json files
+for root, dirs, files in os.walk('.'):
+    for file in files:
+        if file.endswith("tests.json"):
+            with open(os.path.join(root, file), 'r') as f:
+                tests_to_run.append(json.load(f))
+
+all_tests_passed = True
+# Go through parsed tests
+for tests in tests_to_run:
+    function = tests['title']
+    for t in tests['tests']:
+        parameters = ["(", None, ")"]
+        parameters[1] = ",".join([str(x) for x in t['args']])
+        parameters = "".join(parameters)
+        actual_result = eval(function + parameters) # Build function with parameters and evaluates it
+        expected_result = t['res']
+
+        # Prints test details if test failed
+        if actual_result != expected_result:
+            print("{}: Failed at test case {}".format(function, t['desc']))
+            print("Input: {}".format(t['args']))
+            print("Actual: {}".format(actual_result))
+            print("Expected: {}".format(expected_result))
+            all_tests_passed = False
+
+if all_tests_passed:
+    print("All tests passed")