diff --git a/VERSION b/VERSION
index f17f5621..f4476715 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.0+2026.04.16T12.07.43.534Z.b0eade5c.berickson.20260406.portfolio.fixes
+0.1.0+2026.04.23T20.03.53.409Z.887fd5d9.berickson.20260423.test.fix
diff --git a/learning_observer/VERSION b/learning_observer/VERSION
index ae344fc5..f4476715 100644
--- a/learning_observer/VERSION
+++ b/learning_observer/VERSION
@@ -1 +1 @@
-0.1.0+2026.04.06T14.01.45.433Z.6e6d9aca.berickson.20260406.portfolio.fixes
+0.1.0+2026.04.23T20.03.53.409Z.887fd5d9.berickson.20260423.test.fix
diff --git a/learning_observer/learning_observer/adapters/helpers.py b/learning_observer/learning_observer/adapters/helpers.py
index 5a311168..96c60c1b 100644
--- a/learning_observer/learning_observer/adapters/helpers.py
+++ b/learning_observer/learning_observer/adapters/helpers.py
@@ -18,16 +18,13 @@ def rename_json_keys(source, replacements):
     >>> source = {
     ...     "event-type": "blog",
     ...     "writing-log": "foobar",
-    }
+    ... }
     >>> replacements = {
     ...     "event-type": "event_type",
     ...     "writing-log": "writing_log",
     ... }
     >>> rename_json_keys(source, replacements)
-    {
-        "event_type": "blog",
-        "writing_log": "foobar",
-    }
+    {'event_type': 'blog', 'writing_log': 'foobar'}
     '''
     if isinstance(source, dict):
         for key, value in list(source.items()):
diff --git a/learning_observer/learning_observer/auth/events.py b/learning_observer/learning_observer/auth/events.py
index e650992a..b862fcf0 100644
--- a/learning_observer/learning_observer/auth/events.py
+++ b/learning_observer/learning_observer/auth/events.py
@@ -40,6 +40,11 @@
 AUTH_METHODS = {}
 
 
+class TestRequest:
+    """Simple request stub for doctests."""
+    pass
+
+
 def register_event_auth(name):
     '''
     Decorator to register a method to authenticate events
@@ -135,7 +140,9 @@ async def guest_auth(request, event, source):
     We assign a cookie on first visit, but we have no guarantee
     the browser will keep cookies around.
 
-    >>> a = asyncio.run(guest_auth(TestRequest(), [], {}, 'org.mitros.test'))
+    >>> from unittest.mock import AsyncMock, patch
+    >>> with patch('aiohttp_session.get_session', new=AsyncMock(return_value={})):
+    ...     a = asyncio.run(guest_auth(TestRequest(), {}, 'org.mitros.test'))
     >>> a['user_id'] = len(a['user_id'])  # Different user_id each time, and we want doctest to match exact string.
     >>> a
     {'sec': 'none', 'user_id': 32, 'providence': 'guest'}
@@ -163,12 +170,16 @@ async def local_storage_auth(request, event, source):
     unauthenticated (if we don't), or allow for both, with a tag for
     guest versus non-guest accounts.
 
+    >>> from unittest.mock import patch
     >>> auth_event = {'event': 'local_storage', 'user_tag': 'bob'}
-    >>> a = asyncio.run(local_storage_auth(TestRequest(), [], auth_event, 'org.mitros.test'))
+    >>> with patch('learning_observer.auth.events.token_authorize_user', return_value='authenticated'):
+    ...     a = asyncio.run(local_storage_auth(TestRequest(), auth_event, 'org.mitros.test'))
     >>> a
     {'sec': 'authenticated', 'user_id': 'ls-bob', 'providence': 'ls'}
     >>> auth_event['user_tag'] = 'jim'
-    >>> a = asyncio.run(local_storage_auth(TestRequest(), [auth_event], {}, 'org.mitros.test'))
+    >>> with patch('learning_observer.auth.events.token_authorize_user', return_value='unauthenticated'):
+    ...     a = asyncio.run(local_storage_auth(TestRequest(), auth_event, 'org.mitros.test'))
+
     >>> a
     {'sec': 'unauthenticated', 'user_id': 'ls-jim', 'providence': 'ls'}
     '''
@@ -344,9 +355,6 @@ def check_event_auth_config():
     import doctest
     print("Running tests")
 
-    class TestRequest:
-        pass
-
     session = {}
 
     async def get_session(request):
diff --git a/learning_observer/learning_observer/communication_protocol/executor.py b/learning_observer/learning_observer/communication_protocol/executor.py
index ef59307d..8e4963f7 100644
--- a/learning_observer/learning_observer/communication_protocol/executor.py
+++ b/learning_observer/learning_observer/communication_protocol/executor.py
@@ -19,7 +19,7 @@
 import learning_observer.stream_analytics.fields
 import learning_observer.stream_analytics.helpers
 from learning_observer.log_event import debug_log
-from learning_observer.util import get_nested_dict_value, clean_json, ensure_async_generator, async_zip
+from learning_observer.util import get_nested_dict_value, clean_json, ensure_async_generator, async_zip, async_generator_to_list
 from learning_observer.communication_protocol.exception import DAGExecutionException
 
 
@@ -1133,7 +1133,5 @@ async def visit(node_name):
 
 if __name__ == "__main__":
     import doctest
-    # This function is used by doctests
-    from learning_observer.util import async_generator_to_list
 
     doctest.testmod(optionflags=doctest.ELLIPSIS)
diff --git a/learning_observer/learning_observer/doc_processor.py b/learning_observer/learning_observer/doc_processor.py
index 9dfe22a1..7069cbcc 100644
--- a/learning_observer/learning_observer/doc_processor.py
+++ b/learning_observer/learning_observer/doc_processor.py
@@ -17,7 +17,7 @@
 
 import learning_observer.auth.utils
 import learning_observer.constants
-import learning_observer.google
+import learning_observer.integrations.google as google_integration
 import learning_observer.kvs
 import learning_observer.offline
 import learning_observer.run
@@ -26,13 +26,25 @@
 import learning_observer.stream_analytics.helpers as sa_helpers
 import learning_observer.util
 
-import writing_observer
-import writing_observer.awe_nlp
-import writing_observer.languagetool
-import writing_observer.writing_analysis
+try:
+    import writing_observer
+    import writing_observer.awe_nlp
+    import writing_observer.languagetool
+    import writing_observer.writing_analysis
+except ModuleNotFoundError:
+    writing_observer = None
 
 from learning_observer.log_event import debug_log
 
+
+def _require_writing_observer():
+    if writing_observer is None:
+        raise RuntimeError(
+            "writing_observer is required for document processing, "
+            "but is not installed in this environment."
+        )
+
+
 pmss.register_field(
     name='document_processing_delay_seconds',
     type=pmss.pmsstypes.TYPES.integer,
@@ -93,6 +105,7 @@ async def check_recent_mod_and_not_recent_process(doc_id):
     processing and check whether it is past a specified cutoff
     time (5 minutes).
     '''
+    _require_writing_observer()
     cutoff = learning_observer.settings.pmss_settings.document_processing_delay_seconds(types=['modules', 'writing_observer'])
     student_id = await _determine_student(doc_id)
 
@@ -161,8 +174,9 @@ def fetch_mock_runtime(creds):
 async def start():
     learning_observer.offline.init('creds.yaml')
     global app, KVS
+    _require_writing_observer()
     app = StubApp(asyncio.get_event_loop())
-    learning_observer.google.initialize_and_register_routes(app)
+    google_integration.initialize_and_register_routes(app)
     KVS = learning_observer.kvs.KVS()
 
     # overwrite aiohttp_session.get_session so the Google API
diff --git a/learning_observer/learning_observer/integrations/google.py b/learning_observer/learning_observer/integrations/google.py
index 4ef51a89..d83a6382 100644
--- a/learning_observer/learning_observer/integrations/google.py
+++ b/learning_observer/learning_observer/integrations/google.py
@@ -161,11 +161,11 @@ def _force_text_length(text, length):
     '''
     Force text to a given length, either concatenating or padding
 
-    >>> force_text_length("Hello", 3)
-    >>> 'Hel'
+    >>> _force_text_length("Hello", 3)
+    'Hel'
 
-    >>> force_text_length("Hello", 13)
-    >>> 'Hello        '
+    >>> _force_text_length("Hello", 13)
+    'Hello        '
     '''
     return text[:length] + " " * (length - len(text))
 
diff --git a/learning_observer/learning_observer/integrations/util.py b/learning_observer/learning_observer/integrations/util.py
index bf122ea0..a819538b 100644
--- a/learning_observer/learning_observer/integrations/util.py
+++ b/learning_observer/learning_observer/integrations/util.py
@@ -64,7 +64,7 @@ def extract_parameters_from_format_string(format_string):
     '''
     Extracts parameters from a format string. E.g.
 
-    >>> ("hello {hi} my {bye}")]
+    >>> extract_parameters_from_format_string("hello {hi} my {bye}")
     ['hi', 'bye']
     '''
     # The parse returns a lot of context, which we discard. In particular, the
diff --git a/learning_observer/learning_observer/merkle_store.py b/learning_observer/learning_observer/merkle_store.py
index 1f5fff60..dae1d3fa 100644
--- a/learning_observer/learning_observer/merkle_store.py
+++ b/learning_observer/learning_observer/merkle_store.py
@@ -68,17 +68,13 @@
 import hashlib
 import json
 import datetime
-from modulefinder import STORE_GLOBAL
 import os
-from pickle import STOP
 
-# These should be abstracted out into a visualization library.
-import matplotlib
-import networkx
-from learning_observer.incoming_student_event import COUNT
-import pydot
-
-from confluent_kafka import Producer, Consumer
+try:
+    from confluent_kafka import Producer, Consumer
+except:
+    Producer = None
+    Consumer = None
 
 
 def json_dump(obj):
@@ -410,6 +406,7 @@ def to_networkx(self):
         This is used for testing, experimentation, and demonstration. It
         would never scale with real data.
         '''
+        import networkx
         G = networkx.DiGraph()
         for item in self._walk():
             print(item)
@@ -426,6 +423,7 @@ def to_graphviz(self):
         This is used for testing, experimentation, and demonstration. It
         would never scale with real data.
         '''
+        import pydot
         G = pydot.Dot(graph_type='digraph')
         for item in self._walk():
             node = pydot.Node(item['hash'], label=self._make_label(item))
diff --git a/learning_observer/learning_observer/pubsub/__init__.py b/learning_observer/learning_observer/pubsub/__init__.py
index 3528facd..8962be81 100644
--- a/learning_observer/learning_observer/pubsub/__init__.py
+++ b/learning_observer/learning_observer/pubsub/__init__.py
@@ -18,16 +18,14 @@
 TODO this module is no longer being used by the LO system.
 This should be removed.
 '''
-import sys
-
 import learning_observer.settings as settings
 from learning_observer.log_event import debug_log
 
 try:
     PUBSUB = settings.settings['pubsub']['type']
-except KeyError:
-    print("Pub-sub configuration missing from configuration file.")
-    sys.exit(-1)
+except (TypeError, KeyError):
+    debug_log("Pub-sub configuration missing from configuration file; defaulting to stub.")
+    PUBSUB = 'stub'
 
 if PUBSUB == 'xmpp':
     import learning_observer.pubsub.receivexmpp
diff --git a/learning_observer/learning_observer/static_data/make_dummy_test_user_tsv.py b/learning_observer/learning_observer/static_data/make_dummy_test_user_tsv.py
index a816be42..3bc71a22 100644
--- a/learning_observer/learning_observer/static_data/make_dummy_test_user_tsv.py
+++ b/learning_observer/learning_observer/static_data/make_dummy_test_user_tsv.py
@@ -1,26 +1,35 @@
 import random
+from pathlib import Path
 
 import names
 
 import tsvx
 
-user_id_template = "tsu-ts-test-user-{i}"
-w = tsvx.writer(open("class_lists/test_users.tsvx", "w"))
-w.title = "Test users"
-w.description = "Test user file to go with stream_writing.py"
-w.headers = ["user_id", "name", "full_name", "email", "phone"]
-w.types = [str, str, str, str, str]
+def main():
+    user_id_template = "tsu-ts-test-user-{i}"
+    output_dir = Path("class_lists")
+    output_dir.mkdir(parents=True, exist_ok=True)
+    with open(output_dir / "test_users.tsvx", "w") as output_file:
+        w = tsvx.writer(output_file)
+        w.title = "Test users"
+        w.description = "Test user file to go with stream_writing.py"
+        w.headers = ["user_id", "name", "full_name", "email", "phone"]
+        w.types = [str, str, str, str, str]
 
-w.write_headers()
-for i in range(25):
-    name = names.get_first_name()
-    w.write(
-        user_id_template.format(i=i),
-        name,
-        "{fn} {ln}".format(fn=name, ln=names.get_last_name()),
-        "{name}@school.district.us".format(name=name),
-        "({pre})-{mid}-{post}".format(
-            pre=random.randint(200, 999),
-            mid=random.randint(200, 999),
-            post=random.randint(1000, 9999))
-    )
+        w.write_headers()
+        for i in range(25):
+            name = names.get_first_name()
+            w.write(
+                user_id_template.format(i=i),
+                name,
+                "{fn} {ln}".format(fn=name, ln=names.get_last_name()),
+                "{name}@school.district.us".format(name=name),
+                "({pre})-{mid}-{post}".format(
+                    pre=random.randint(200, 999),
+                    mid=random.randint(200, 999),
+                    post=random.randint(1000, 9999))
+            )
+
+
+if __name__ == "__main__":
+    main()
diff --git a/learning_observer/learning_observer/stream_analytics/helpers.py b/learning_observer/learning_observer/stream_analytics/helpers.py
index 05d5ef1c..99b5e2ba 100644
--- a/learning_observer/learning_observer/stream_analytics/helpers.py
+++ b/learning_observer/learning_observer/stream_analytics/helpers.py
@@ -52,7 +52,7 @@ def fully_qualified_function_name(func):
     that function. E.g.:
 
     >>> from math import sin
-    >>> fully_qualified_function_name(math.sin)
+    >>> fully_qualified_function_name(sin)
     'math.sin'
 
     This is helpful for then giving unique names to analytics modules. Each module can
@@ -147,11 +147,12 @@ def make_key(func, key_dict, state_type):
     Into a unique string
 
     For example:
-    >>> make_key(
-          some_module.reducer,
-          {h.KeyField.STUDENT: 123},
-          h.KeyStateType.INTERNAL
-    )
+    >>> from learning_observer.stream_analytics.fields import KeyField, KeyStateType
+    >>> def reducer(_):
+    ...     return _
+    >>> reducer.__module__ = 'some_module'
+    >>> reducer.__qualname__ = 'reducer'
+    >>> make_key(reducer, {KeyField.STUDENT: 123}, KeyStateType.INTERNAL)
     'Internal,some_module.reducer,STUDENT:123'
     '''
     # pylint: disable=isinstance-second-argument-not-valid-type
diff --git a/requirements.txt b/requirements.txt
index 9f4a5afb..5562f6e4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ dash
 dash_renderjson
 docopt
 dash-bootstrap-components
-tsvx @ git+https://github.com/pmitros/tsvx.git@09bf7f33107f66413d929075a8b54c36ca581dae#egg=tsvx
+tsvx @ https://codeload.github.com/pmitros/tsvx/tar.gz/f883c63892dc383cc15d1d14c05a33d16fb92317
 ipython
 ipykernel
 jsonschema