Abstract out the diff fetch types to make it easier to integrate new ones

changedetectionio/fetchers/text_json_diff.py

@@ -1,3 +1,5 @@
+# HTML to TEXT/JSON DIFFERENCE FETCHER
+
 import hashlib
 import json
 import logging

changedetectionio/tests/test_element_removal.py

@@ -71,7 +71,6 @@ def set_modified_response():
 
 
 def test_element_removal_output():
-    from changedetectionio import fetch_site_status
     from inscriptis import get_text
 
     # Check text with sub-parts renders correctly

changedetectionio/tests/test_ignore_regex_text.py

@@ -1,7 +1,5 @@
 #!/usr/bin/python3
 
-import time
-from flask import url_for
 from . util import live_server_setup
 from changedetectionio import html_tools
 
@@ -11,7 +9,7 @@ def test_setup(live_server):
 # Unit test of the stripper
 # Always we are dealing in utf-8
 def test_strip_regex_text_func():
-    from changedetectionio import fetch_site_status
+    from ..fetchers import text_json_diff as fetch_site_status
 
     test_content = """
     but sometimes we want to remove the lines.

changedetectionio/tests/test_ignore_text.py

@@ -11,7 +11,7 @@ def test_setup(live_server):
 # Unit test of the stripper
 # Always we are dealing in utf-8
 def test_strip_text_func():
-    from changedetectionio import fetch_site_status
+    from ..fetchers import text_json_diff as fetch_site_status
 
     test_content = """
     Some content

changedetectionio/update_worker.py

@@ -4,8 +4,7 @@ import queue
 import time
 
 from changedetectionio import content_fetcher
-from changedetectionio import queuedWatchMetaData
-from changedetectionio.fetch_site_status import FilterNotFoundInResponse
+from .fetchers.text_json_diff import FilterNotFoundInResponse
 
 # A single update worker
 #
@@ -153,7 +152,7 @@ class update_worker(threading.Thread):
                 os.unlink(full_path)
 
     def run(self):
-        from changedetectionio import fetch_site_status
+        from .fetchers import text_json_diff as fetch_site_status
 
         update_handler = fetch_site_status.perform_site_check(datastore=self.datastore)