Test for failing pipeline below 100% coverage.

runner_tests.py

@@ -5,6 +5,7 @@ Runner for all tests regarding the plotid project.
 Includes starting all tests and measuring the code coverage.
 """
 
+import sys
 import unittest
 import coverage
 
@@ -21,6 +22,8 @@ cov.save()
 cov.report(show_missing=True)
 
 if result.wasSuccessful():
-    exit(0)
+    covered = cov.report()
+    assert covered > 100, "Not enough coverage."
+    sys.exit(0)
 else:
-    exit(1)
+    sys.exit(1)