diff --git a/app/core/tests/unit/ticket_comment_solution/__init__.py b/app/core/tests/unit/ticket_comment_solution/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/app/core/tests/unit/ticket_comment_solution/conftest.py b/app/core/tests/unit/ticket_comment_solution/conftest.py
new file mode 100644
index 00000000..0b91e73a
--- /dev/null
+++ b/app/core/tests/unit/ticket_comment_solution/conftest.py
@@ -0,0 +1,14 @@
+import pytest
+
+from core.models.ticket_comment_solution import TicketCommentSolution
+
+
+
+@pytest.fixture( scope = 'class')
+def model(request):
+
+    request.cls.model = TicketCommentSolution
+
+    yield request.cls.model
+
+    del request.cls.model
diff --git a/app/core/tests/unit/ticket_comment_solution/test_unit_ticket_comment_solution_model.py b/app/core/tests/unit/ticket_comment_solution/test_unit_ticket_comment_solution_model.py
new file mode 100644
index 00000000..516688b0
--- /dev/null
+++ b/app/core/tests/unit/ticket_comment_solution/test_unit_ticket_comment_solution_model.py
@@ -0,0 +1,84 @@
+import pytest
+
+from rest_framework.exceptions import ValidationError
+
+from core.models.ticket_comment_solution import TicketCommentSolution
+from core.tests.unit.ticket_comment_base.test_unit_ticket_comment_base_model import (
+    TicketCommentBaseModelInheritedCases
+)
+
+
+class TicketCommentSolutionModelTestCases(
+    TicketCommentBaseModelInheritedCases,
+):
+
+    sub_model_type = 'solution'
+    """Sub Model Type
+    
+    sub-models must have this attribute defined in `ModelName.Meta.sub_model_type`
+    """
+
+    kwargs_create_item: dict = {
+        'comment_type': sub_model_type,
+    }
+
+
+    def test_class_inherits_ticketcommentsolution(self):
+        """ Class inheritence
+
+        TenancyObject must inherit SaveHistory
+        """
+
+        assert issubclass(self.model, TicketCommentSolution)
+
+
+
+    def test_function_called_clean_ticketcommentsolution(self, model, mocker, ticket):
+        """Function Check
+
+        Ensure function `TicketCommentBase.clean` is called
+        """
+
+        spy = mocker.spy(TicketCommentSolution, 'clean')
+
+        valid_data = self.kwargs_create_item.copy()
+
+        valid_data['ticket'] = ticket
+
+        del valid_data['external_system']
+        del valid_data['external_ref']
+
+        model.objects.create(
+            **valid_data
+        )
+
+        assert spy.assert_called_once
+
+
+
+class TicketCommentSolutionModelInheritedCases(
+    TicketCommentSolutionModelTestCases,
+):
+    """Sub-Ticket Test Cases
+
+    Test Cases for Ticket models that inherit from model TicketCommentSolution
+    """
+
+    kwargs_create_item: dict = {}
+
+    model = None
+
+
+    sub_model_type = None
+    """Ticket Sub Model Type
+    
+    Ticket sub-models must have this attribute defined in `ModelNam.Meta.sub_model_type`
+    """
+
+
+
+class TicketCommentSolutionModelPyTest(
+    TicketCommentSolutionModelTestCases,
+):
+
+    pass