diff --git a/packages/test.sh b/packages/test.sh
index db9563d69ae..cc1a7940770 100755
--- a/packages/test.sh
+++ b/packages/test.sh
@@ -33,7 +33,7 @@ PACKAGE_DIRS=(
 )
 # tool_util not yet working 100%,
 # data has many problems quota, tool shed install database, etc..
-RUN_TESTS=(1 1 1 1 1 1 1 1 0 0 0 0)
+RUN_TESTS=(1 1 1 1 1 1 1 1 1 0 0 0)
 for ((i=0; i<${#PACKAGE_DIRS[@]}; i++)); do
     package_dir=${PACKAGE_DIRS[$i]}
     run_tests=${RUN_TESTS[$i]}
diff --git a/packages/web_stack/tests/web_stack b/packages/web_stack/tests/web_stack
new file mode 120000
index 00000000000..c3dbc746415
--- /dev/null
+++ b/packages/web_stack/tests/web_stack
@@ -0,0 +1 @@
+../../../test/unit/web_stack
\ No newline at end of file
diff --git a/test/unit/web_stack/__init__.py b/test/unit/web_stack/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/test/unit/web_stack/test_message.py b/test/unit/web_stack/test_message.py
new file mode 100644
index 00000000000..56c8d9d7121
--- /dev/null
+++ b/test/unit/web_stack/test_message.py
@@ -0,0 +1,30 @@
+from galaxy.web_stack.message import (
+    JobHandlerMessage,
+    WorkflowSchedulingMessage,
+)
+
+
+def test_validate_job_handler_message():
+    message = JobHandlerMessage(task='setup', job_id=42)
+    message.validate()
+
+    message = JobHandlerMessage(task='setup')
+    error = None
+    try:
+        message.validate()
+    except AssertionError as e:
+        error = e
+    assert error is not None
+
+
+def test_validate_workflow_handler_message():
+    message = WorkflowSchedulingMessage(task='setup', workflow_invocation_id=42)
+    message.validate()
+
+    message = WorkflowSchedulingMessage(task='setup')
+    error = None
+    try:
+        message.validate()
+    except AssertionError as e:
+        error = e
+    assert error is not None