fix: Update tests to account for WebVTT regression test (id=3)

- test_add_test_empty_erc: Changed assertion to check id=4 (id=3 now used by WebVTT test)
- test_update_expected_results_: Updated expected test count from 2 to 3
- sample1.webvtt: Fixed line endings to use CRLF as expected by code

Author: Rahul-2k4

install/sample_files/sample1.webvtt

@@ -1,2 +1,2 @@
-WEBVTT
-
+WEBVTT
+

tests/test_regression/test_controllers.py

@@ -243,7 +243,7 @@ def test_add_test_empty_erc(self):
                 category_id=1,
                 submit=True,
             ))
-            self.assertEqual(RegressionTest.query.filter(RegressionTest.id == 3).first(), None)
+            self.assertEqual(RegressionTest.query.filter(RegressionTest.id == 4).first(), None)
 
     def test_category_deletion_without_login(self):
         """Check if it will move to the login page."""

tests/test_regression/test_update_regression.py

@@ -39,7 +39,7 @@ def test_update_expected_results_(self, mock_test, mock_os):
 
         mock_os.path.isfile.return_value = True
         expected = True
-        num_tests = 2   # store number of mock regression tests we have
+        num_tests = 3   # store number of mock regression tests we have
 
         response = update_expected_results('valid/path')