bail report on no data

tests/test_changes.py

@@ -5,37 +5,36 @@
 This is meant for red explicit fails on changes in CI
 """
 
-import re
-import os
-import git
-import inspect
+def generate_tests_from_changes():
+    import re
+    import os
+    import git
+    import inspect
 
-from warnings import warn
-from importlib.util import spec_from_file_location, module_from_spec
+    from warnings import warn
 
-from pytest import mark
+    from pytest import mark
 
-from pybikes import BikeShareSystem
-from pybikes.data import get_instances
-from pybikes.compat import resources
+    from pybikes import BikeShareSystem
+    from pybikes.data import get_instances
+    from pybikes.compat import resources
 
-from tests.test_instances import get_test_cls
+    from tests.test_instances import get_test_cls
 
 
-def is_system(obj):
-    if not inspect.isclass(obj):
-        return False
+    def is_system(obj):
+        if not inspect.isclass(obj):
+            return False
 
-    if not issubclass(obj, BikeShareSystem):
-        return False
+        if not issubclass(obj, BikeShareSystem):
+            return False
 
-    if obj == BikeShareSystem:
-        return False
+        if obj == BikeShareSystem:
+            return False
 
-    return True
+        return True
 
 
-def generate_tests_from_changes():
     g = git.cmd.Git(os.getcwd())
     changed_files = g.diff('--name-only', 'origin/master').splitlines()
     clss = set()

utils/github-summary.tpl.md

@@ -1,5 +1,6 @@
 # systems status report (Python {{ version }})
 
+{% if systems %}
 | overall success rate | {{ int((health.passed / health.total) * 100) }}% |
 |-|-|
 | passed | {{ health.passed }} |
@@ -55,3 +56,6 @@
         {% endfor %}
     {% endfor %}
 {% endfor %}
+{% else %}
+No systems
+{% endif %}

utils/report.tpl.md

@@ -1,4 +1,5 @@
 # systems status report (Python {{ version }})
+{% if systems %}
 
 | overall success rate | {{ int((health.passed / health.total) * 100) }}% |
 |-|-|
@@ -54,3 +55,6 @@
         {% endfor %}
     {% endfor %}
 {% endfor %}
+{% else %}
+No systems
+{% endif %}