Extending tests to cover resetting the diff/unviewed status correctly

backend/__init__.py

@@ -249,6 +249,11 @@ def changedetection_app(config=None, datastore_o=None):
     def diff_history_page(uuid):
         global messages
 
+        # More for testing, possible to return the first/only
+        if uuid == 'first':
+            uuid= list(datastore.data['watching'].keys()).pop()
+
+
         extra_stylesheets = ['/static/css/diff.css']
 
         watch = datastore.data['watching'][uuid]
@@ -259,6 +264,11 @@ def changedetection_app(config=None, datastore_o=None):
         dates.sort(reverse=True)
         dates = [str(i) for i in dates]
 
+
+        if len(dates) < 2:
+            messages.append({'class': 'error', 'message': "Not enough saved change detection snapshots to produce a report."})
+            return redirect(url_for('index'))
+
         # Save the current newest history as the most recently viewed
         datastore.set_last_viewed(uuid, dates[0])
 

backend/tests/test_backend.py

@@ -58,6 +58,8 @@ def test_check_basic_change_detection_functionality(client, live_server):
     )
     assert b"1 Imported" in res.data
 
+    # Do this a few times.. ensures we dont accidently set the status
+    for n in range(3):
         client.get(url_for("api_watch_checknow"), follow_redirects=True)
 
         # Give the thread time to pick it up
@@ -91,3 +93,19 @@ def test_check_basic_change_detection_functionality(client, live_server):
     # Now something should be ready, indicated by having a 'unviewed' class
     res = client.get(url_for("index"))
     assert b'unviewed' in res.data
+
+    # Following the 'diff' link, it should no longer display as 'unviewed' even after we recheck it a few times
+    res = client.get(url_for("diff_history_page", uuid="first") )
+    assert b'Compare newest' in res.data
+
+    # Do this a few times.. ensures we dont accidently set the status
+    for n in range(2):
+        client.get(url_for("api_watch_checknow"), follow_redirects=True)
+
+        # Give the thread time to pick it up
+        time.sleep(sleep_time_for_fetch_thread)
+
+        # It should report nothing found (no new 'unviewed' class)
+        res = client.get(url_for("index"))
+        assert b'unviewed' not in res.data
+        assert b'test-endpoint' in res.data