1 files changed, 45 insertions, 0 deletions
diff --git a/tests/test_deprecated.py b/tests/test_deprecated.py
new file mode 100644
index 0000000..fd4de82
--- /dev/null
+++ b/tests/test_deprecated.py
@@ -0,0 +1,45 @@
+import warnings
+
+import pytest
+
+from tests.output_aristaproto.deprecated import (
+    Message,
+    Test,
+)
+
+
+@pytest.fixture
+def message():
+    with warnings.catch_warnings():
+        warnings.filterwarnings("ignore", category=DeprecationWarning)
+        return Message(value="hello")
+
+
+def test_deprecated_message():
+    with pytest.warns(DeprecationWarning) as record:
+        Message(value="hello")
+
+    assert len(record) == 1
+    assert str(record[0].message) == f"{Message.__name__} is deprecated"
+
+
+def test_message_with_deprecated_field(message):
+    with pytest.warns(DeprecationWarning) as record:
+        Test(message=message, value=10)
+
+    assert len(record) == 1
+    assert str(record[0].message) == f"{Test.__name__}.message is deprecated"
+
+
+def test_message_with_deprecated_field_not_set(message):
+    with pytest.warns(None) as record:
+        Test(value=10)
+
+    assert not record
+
+
+def test_message_with_deprecated_field_not_set_default(message):
+    with pytest.warns(None) as record:
+        _ = Test(value=10).message
+
+    assert not record