diff --git a/tests/unit/routes/test_seed_router.py b/tests/unit/routes/test_seed_router.py
index c3c7e42c..992ff586 100644
--- a/tests/unit/routes/test_seed_router.py
+++ b/tests/unit/routes/test_seed_router.py
@@ -19,7 +19,8 @@ def setup_class(cls):
             pytest.skip("Test skipped because the database dialect is not MySQL")
 
     def test_mysql_not_supported(self, client, session):
-        response = client.post("/seed", json={"clusters": []})
+        data = {"clusters": [{"records": []} for _ in range(10)]}
+        response = client.post("/seed", json=data)
         assert response.status_code == 422
         assert response.json() == {"detail": "Batch seeding is not supported for MySQL"}
 
@@ -30,6 +31,17 @@ def setup_class(cls):
         if db_dialect() == "mysql":
             pytest.skip("Test skipped because the database dialect is MySQL")
 
+    def test_empty_clusters(self, client):
+        response = client.post("/seed", json={"clusters": []})
+        assert response.status_code == 422
+        assert response.json()["detail"][0]["msg"] == "Value error, Clusters must not be empty"
+
+    def test_too_many_clusters(self, client):
+        data = {"clusters": [{"records": []} for _ in range(101)]}
+        response = client.post("/seed", json=data)
+        assert response.status_code == 422
+        assert response.json()["detail"][0]["msg"] == "Value error, Clusters must not exceed 100 records"
+
     def test_large_batch(self, client):
         data = load_test_json_asset("seed_test.json.gz")
         response = client.post("/seed", json=data)
diff --git a/tests/unit/schemas/test_pii.py b/tests/unit/schemas/test_pii.py
index 47b0f5d2..d97ba815 100644
--- a/tests/unit/schemas/test_pii.py
+++ b/tests/unit/schemas/test_pii.py
@@ -368,10 +368,15 @@ def test_blocking_values(self):
                 "name": [{"given": ["John", "William"], "family": "Doe"}],
             }
         )
-        assert list(rec.blocking_values()) == [
-            (BlockingKey.BIRTHDATE, "1980-01-01"),
-            (BlockingKey.MRN, "3456"),
-            (BlockingKey.FIRST_NAME, "John"),
-            (BlockingKey.FIRST_NAME, "Will"),
-            (BlockingKey.LAST_NAME, "Doe"),
-        ]
+
+        for key, val in rec.blocking_values():
+            if key == BlockingKey.BIRTHDATE:
+                assert val == "1980-01-01"
+            elif key == BlockingKey.MRN:
+                assert val == "3456"
+            elif key == BlockingKey.FIRST_NAME:
+                assert val in ("John", "Will")
+            elif key == BlockingKey.LAST_NAME:
+                assert val == "Doe"
+            else:
+                raise AssertionError(f"Unexpected key: {key}")