diff --git a/tests/test_models.py b/tests/test_models.py
new file mode 100644
index 0000000..769dc65
--- /dev/null
+++ b/tests/test_models.py
@@ -0,0 +1,61 @@
+import pytest
+from src.models.entities import Repository, PullRequest, Issue, Workflow, Config
+from src.models.types import Provider, IssueStatus, WorkflowStatus, PRStatus
+from datetime import datetime
+
+
+class TestRepository:
+    def test_create_repository(self):
+        repo = Repository(
+            name="test-repo",
+            owner="testuser",
+            full_name="testuser/test-repo",
+            provider=Provider.GITHUB,
+        )
+        assert repo.name == "test-repo"
+        assert repo.owner == "testuser"
+        assert repo.provider == Provider.GITHUB
+
+
+class TestPullRequest:
+    def test_create_pull_request(self):
+        pr = PullRequest(
+            number=1,
+            title="Test PR",
+            author="testuser",
+            status=PRStatus.OPEN,
+        )
+        assert pr.number == 1
+        assert pr.title == "Test PR"
+        assert pr.status == PRStatus.OPEN
+
+
+class TestIssue:
+    def test_create_issue(self):
+        issue = Issue(
+            number=1,
+            title="Test Issue",
+            author="testuser",
+            status=IssueStatus.OPEN,
+        )
+        assert issue.number == 1
+        assert issue.status == IssueStatus.OPEN
+
+
+class TestWorkflow:
+    def test_create_workflow(self):
+        workflow = Workflow(
+            id=1,
+            name="CI",
+            status=WorkflowStatus.SUCCESS,
+        )
+        assert workflow.id == 1
+        assert workflow.status == WorkflowStatus.SUCCESS
+
+
+class TestConfig:
+    def test_default_config(self):
+        config = Config()
+        assert config.refresh_interval == 30
+        assert config.theme == "dark"
+        assert config.github_token is None