has_string method implemented and tested

src/utils.py

@@ -101,3 +101,12 @@ def drop_file_extension(file_name):
         raise ValueError
     file_name = file_name.split('.')[:-1]
     return '.'.join(file_name)
+
+
+def has_string(string, sub_string):
+    if string is None or sub_string is None:
+        raise ValueError
+    string = str(string).lower()
+    sub_string = str(sub_string).lower()
+
+    return sub_string in string

test/test_utils.py

 from unittest import TestCase
 import unittest.mock as mock
-from src.utils import digits_in_string, make_directory, read_json, drop_file_extension, make_sorted_sample, \
-    sample_from_video_with_gt
+from src.utils import *
 import random
 import os.path as osp
 import os
@@ -73,4 +72,11 @@ class TestUtils(TestCase):
         user_scores=np.expand_dims(user_scores, axis=1)
         video_frames = list(np.random.randn(n_frames))
         sampled_frames, sampled_gt = sample_from_video_with_gt(video_frames, user_scores, duration, fps, n_samples=2)
-        self.assertEquals(len(sampled_frames), len(sampled_gt))
\ No newline at end of file
+        self.assertEquals(len(sampled_frames), len(sampled_gt))
+
+    def test_has_string(self):
+        self.assertTrue(has_string('Frame123','frame'))
+        self.assertTrue(has_string('frame123', 'Frame'))
+        self.assertFalse(has_string('', 'frame'))
+        with self.assertRaises(ValueError):
+            has_string(None,'string')
\ No newline at end of file