Add test for custom component with TemplateField

tests/data/component_with_templatefield.py

@@ -0,0 +1,17 @@
+import random
+
+from langflow import CustomComponent
+from langflow.template.field.base import TemplateField
+
+
+class TestComponent(CustomComponent):
+    def refresh_values(self):
+        # This is a function that will be called every time the component is updated
+        # and should return a list of random strings
+        return [f"Random {random.randint(1, 100)}" for _ in range(5)]
+
+    def build_config(self):
+        return {"param": TemplateField(display_name="Param", options=self.refresh_values)}
+
+    def build(self, param: int):
+        return param