diff --git a/tests/test_list_store.py b/tests/test_list_store.py
new file mode 100644
index 0000000..88ff1bd
--- /dev/null
+++ b/tests/test_list_store.py
@@ -0,0 +1,47 @@
+import pytest
+
+from dzgui.model.model_factory import FastInsertListStore
+
+
+@pytest.fixture
+def heterogeneous_list() -> None:
+    return [["a", 0, True], ["b", 1, False]]
+
+
+@pytest.fixture
+def mismatched_length_list() -> None:
+    return [["a", 0, True], ["b", 1, False, 0]]
+
+
+@pytest.fixture
+def extended_list(heterogeneous_list) -> None:
+    fs = FastInsertListStore(str, int, bool)
+    fs.extend(heterogeneous_list)
+    return fs
+
+
+@pytest.fixture
+def appended_list(heterogeneous_list) -> None:
+    fs = FastInsertListStore(str, int, bool)
+    for row in heterogeneous_list:
+        fs.append(row)
+    return fs
+
+
+@pytest.mark.parametrize("target", ["extended_list", "appended_list"])
+def test_list_parity(heterogeneous_list, request, target) -> None:
+    target = request.getfixturevalue(target)
+    extracted = [[el for el in row] for row in target]
+    assert heterogeneous_list == extracted
+
+
+def test_type_disparity(heterogeneous_list) -> None:
+    with pytest.raises(TypeError):
+        fs = FastInsertListStore(str, bool, bool)
+        fs.extend(heterogeneous_list)
+
+
+def test_length_disparity(mismatched_length_list) -> None:
+    with pytest.raises(ValueError):
+        fs = FastInsertListStore(str, int, bool)
+        fs.extend(mismatched_length_list)