reword assertion error message

test/test_dms_requirements.py

@@ -13,15 +13,13 @@ def test_requirements():
     with open(test_requirements_filename) as test_requirements_file:
         requirements = json.load(test_requirements_file)
 
-    required_tests = sorted(
-        {
-            test
-            for requirement_tests in requirements.values()
-            for test in requirement_tests
-        }
-    )
-
-    existing_tests = []
+    required_tests = {
+        test
+        for requirement_tests in requirements.values()
+        for test in requirement_tests
+    }
+
+    existing_tests = set()
     test_regex = re.compile(r"def (test_[^\(]+)\(.*\):")
     for test_filename in test_directory.glob("**/test_*.py"):
         with open(test_filename) as test_file:
@@ -30,10 +28,7 @@ def test_requirements():
         for match in re.finditer(test_regex, test_file_contents):
             test = f"{test_directory.stem}.{str(test_filename.relative_to(test_directory).parent).replace('/', '.')}.{test_filename.stem}.{match.group(1)}"
             if test in required_tests:
-                existing_tests.append(test)
-
-    existing_tests = sorted(existing_tests)
-
-    assert existing_tests == required_tests
-
+                existing_tests.add(test)
 
+    missing_tests = required_tests - existing_tests
+    assert not missing_tests, f"could not find the following tests correlated with DMS requirements: {missing_tests}"