diff --git a/frappe/tests/test_document.py b/frappe/tests/test_document.py
index 34a1dd070c..8027bde504 100644
--- a/frappe/tests/test_document.py
+++ b/frappe/tests/test_document.py
@@ -1,11 +1,20 @@
-# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
+# Copyright (c) 2022, Frappe Technologies Pvt. Ltd. and Contributors
 # License: MIT. See LICENSE
-import os
 import unittest
+from contextlib import contextmanager
+from datetime import timedelta
+from unittest.mock import patch
 
 import frappe
-from frappe.utils import cint
-from frappe.model.naming import revert_series_if_last, make_autoname, parse_naming_series
+from frappe.desk.doctype.note.note import Note
+from frappe.model.naming import make_autoname, parse_naming_series, revert_series_if_last
+from frappe.utils import cint, now_datetime
+
+
+class CustomTestNote(Note):
+	@property
+	def age(self):
+		return now_datetime() - self.creation
 
 
 class TestDocument(unittest.TestCase):
@@ -256,4 +265,41 @@ class TestDocument(unittest.TestCase):
 	def test_limit_for_get(self):
 		doc = frappe.get_doc("DocType", "DocType")
 		# assuming DocType has more that 3 Data fields
-		self.assertEquals(len(doc.get("fields", filters={"fieldtype": "Data"}, limit=3)), 3)
\ No newline at end of file
+		self.assertEquals(len(doc.get("fields", filters={"fieldtype": "Data"}, limit=3)), 3)
+
+	def test_dynamic_fields(self):
+		"""Read Only Dynamic fields are accessible via API and Form views, whenever .as_dict is invoked
+		"""
+		frappe.db.delete("Custom Field", {"dt": "Note", "fieldname":"age"})
+
+		def patch_note():
+			return patch("frappe.controllers", new={frappe.local.site: {'Note': CustomTestNote}})
+
+		@contextmanager
+		def customize_note():
+			custom_field = frappe.get_doc({
+				"doctype": "Custom Field",
+				"dt": "Note",
+				"fieldname": "age",
+				"fieldtype": "Data",
+				"read_only": True,
+			})
+
+			try:
+				yield custom_field.insert(ignore_if_duplicate=True)
+			finally:
+				custom_field.delete()
+
+		with patch_note():
+			doc = frappe.get_last_doc("Note")
+			self.assertIsInstance(doc, CustomTestNote)
+			self.assertIsInstance(doc.age, timedelta)
+			self.assertIsNone(doc.as_dict().get("age"))
+			self.assertIsNone(doc.get_valid_dict().get("age"))
+
+		with customize_note(), patch_note():
+			doc = frappe.get_last_doc("Note")
+			self.assertIsInstance(doc, CustomTestNote)
+			self.assertIsInstance(doc.age, timedelta)
+			self.assertIsInstance(doc.as_dict().get("age"), timedelta)
+			self.assertIsInstance(doc.get_valid_dict().get("age"), timedelta)