feat: Add unit tests for ProductedString and NodeRegistration

tests/test_Hello.py

@@ -1,10 +0,0 @@
-import unittest
-
-
-class TestHello(unittest.TestCase):
-    def test_hello(self):
-        self.assertEqual("Hello", "Hello")
-
-
-if __name__ == "__main__":
-    unittest.main()

tests/test_NodeRegistration.py

@@ -0,0 +1,36 @@
+import unittest
+import importlib
+from pathlib import Path
+import sys
+
+
+ROOT_DIR = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT_DIR.parent))
+PLUGIN_INIT = importlib.import_module(ROOT_DIR.name)
+
+
+class TestNodeRegistration(unittest.TestCase):
+    def test_all_nodes_are_registered(self):
+        expected_keys = {
+            "TextListProduct",
+            "TextListProductWithSingleA",
+            "TextListProductWithSingleB",
+            "TextListProductWithSingleBoth",
+            "ProductedString",
+            "PromptPairConcat",
+        }
+        self.assertEqual(set(PLUGIN_INIT.NODE_CLASS_MAPPINGS.keys()), expected_keys)
+        self.assertEqual(
+            set(PLUGIN_INIT.NODE_DISPLAY_NAME_MAPPINGS.keys()), expected_keys
+        )
+
+    def test_registered_nodes_expose_required_comfyui_attributes(self):
+        for key, node_class in PLUGIN_INIT.NODE_CLASS_MAPPINGS.items():
+            self.assertTrue(hasattr(node_class, "INPUT_TYPES"), key)
+            self.assertTrue(hasattr(node_class, "RETURN_TYPES"), key)
+            self.assertTrue(hasattr(node_class, "FUNCTION"), key)
+            self.assertTrue(hasattr(node_class, "CATEGORY"), key)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/test_ProductedString.py

@@ -0,0 +1,45 @@
+import unittest
+
+from src.ProductedString import ProductedString
+
+
+class TestProductedString(unittest.TestCase):
+    def setUp(self):
+        self.node = ProductedString()
+
+    def test_combine_input_lists_two_lists(self):
+        result = self.node.combine_input_lists(
+            ", ", "\n", list_a=["a", "b"], list_b=["1", "2"]
+        )
+        self.assertEqual(result, ("a, 1\na, 2\nb, 1\nb, 2",))
+
+    def test_combine_input_lists_only_connected_lists_are_used(self):
+        result = self.node.combine_input_lists(
+            " | ",
+            "\n",
+            list_a=["a"],
+            list_c=["1", "2"],
+            list_f=["x"],
+            ignored="not-a-list",
+        )
+        self.assertEqual(result, ("a | 1 | x\na | 2 | x",))
+
+    def test_combine_input_lists_empty_when_no_lists_are_connected(self):
+        result = self.node.combine_input_lists(", ", "\n")
+        self.assertEqual(result, ("",))
+
+    def test_combine_input_lists_filters_empty_strings(self):
+        result = self.node.combine_input_lists(
+            ", ", "\n", list_a=["a", ""], list_b=["1", ""]
+        )
+        self.assertEqual(result, ("a, 1\na\n1",))
+
+    def test_combine_input_lists_uses_custom_newline_character(self):
+        result = self.node.combine_input_lists(
+            ", ", " / ", list_a=["a"], list_b=["1", "2"]
+        )
+        self.assertEqual(result, ("a, 1 / a, 2",))
+
+
+if __name__ == "__main__":
+    unittest.main()