diff --git a/monkey/tests/unit_tests/common/agent_events/test_propagation_event.py b/monkey/tests/unit_tests/common/agent_events/test_propagation_event.py
new file mode 100644
index 000000000..33dc1cc2a
--- /dev/null
+++ b/monkey/tests/unit_tests/common/agent_events/test_propagation_event.py
@@ -0,0 +1,82 @@
+from ipaddress import IPv4Address
+from uuid import UUID
+
+import pytest
+
+from common.agent_events import PropagationEvent
+
+TARGET_IP_STR = "192.168.1.10"
+AGENT_ID = UUID("012e7238-7b81-4108-8c7f-0787bc3f3c10")
+TIMESTAMP = 1664371327.4067292
+
+PROPAGATION_EVENT = PropagationEvent(
+    source=AGENT_ID,
+    timestamp=TIMESTAMP,
+    target=IPv4Address(TARGET_IP_STR),
+    success=True,
+    exploiter_name="SSHExploiter",
+)
+
+PROPAGATION_OBJECT_DICT = {
+    "source": AGENT_ID,
+    "timestamp": TIMESTAMP,
+    "target": IPv4Address(TARGET_IP_STR),
+    "success": True,
+    "exploiter_name": "SSHExploiter",
+    "error_message": "",
+}
+
+PROPAGATION_SIMPLE_DICT = {
+    "source": str(AGENT_ID),
+    "timestamp": TIMESTAMP,
+    "target": TARGET_IP_STR,
+    "success": "true",
+    "exploiter_name": "SSHExploiter",
+    "error_message": "",
+}
+
+
+@pytest.mark.parametrize(
+    "propagation_event_dict", [PROPAGATION_OBJECT_DICT, PROPAGATION_SIMPLE_DICT]
+)
+def test_constructor(propagation_event_dict):
+    assert PropagationEvent(**propagation_event_dict) == PROPAGATION_EVENT
+
+
+@pytest.mark.parametrize(
+    "key, value",
+    [
+        ("target", None),
+        ("success", "not-a-bool"),
+        ("exploiter_name", None),
+        ("error_message", None),
+    ],
+)
+def test_construct_invalid_field__type_error(key, value):
+    invalid_type_dict = PROPAGATION_SIMPLE_DICT.copy()
+    invalid_type_dict[key] = value
+
+    with pytest.raises(TypeError):
+        PropagationEvent(**invalid_type_dict)
+
+
+@pytest.mark.parametrize(
+    "key, value",
+    [
+        ("target", "not-an-ip"),
+    ],
+)
+def test_construct_invalid_field__value_error(key, value):
+    invalid_type_dict = PROPAGATION_SIMPLE_DICT.copy()
+    invalid_type_dict[key] = value
+
+    with pytest.raises(ValueError):
+        PropagationEvent(**invalid_type_dict)
+
+
+def test_construct__extra_fields_forbidden():
+    extra_field_dict = PROPAGATION_SIMPLE_DICT.copy()
+    extra_field_dict["extra_field"] = 99  # red balloons
+
+    with pytest.raises(ValueError):
+        PropagationEvent(**extra_field_dict)