Ability to set which text to process triggers on (added, removed, changed) according to the difference (#1483)

changedetectionio/tests/test_block_while_text_present.py

@@ -87,7 +87,10 @@ def test_check_block_changedetection_text_NOT_present(client, live_server):
     # Add our URL to the import page
     res = client.post(
         url_for("edit_page", uuid="first"),
-        data={"text_should_not_be_present": ignore_text, "url": test_url, 'fetch_backend': "html_requests"},
+        data={"text_should_not_be_present": ignore_text,
+              "url": test_url,
+              'fetch_backend': "html_requests"
+              },
         follow_redirects=True
     )
     assert b"Updated watch." in res.data
@@ -129,7 +132,6 @@ def test_check_block_changedetection_text_NOT_present(client, live_server):
     set_modified_response_minus_block_text()
     client.get(url_for("form_watch_checknow"), follow_redirects=True)
     time.sleep(sleep_time_for_fetch_thread)
-
     res = client.get(url_for("index"))
     assert b'unviewed' in res.data