diff --git a/tests/test_litellm/types/proxy/policy_engine/test_resolver_types.py b/tests/test_litellm/types/proxy/policy_engine/test_resolver_types.py
new file mode 100644
index 00000000000..c23ed5d4319
--- /dev/null
+++ b/tests/test_litellm/types/proxy/policy_engine/test_resolver_types.py
@@ -0,0 +1,102 @@
+"""
+Tests for pipeline field on policy CRUD types (resolver_types.py).
+"""
+
+import pytest
+
+from litellm.types.proxy.policy_engine.resolver_types import (
+    PolicyCreateRequest,
+    PolicyDBResponse,
+    PolicyUpdateRequest,
+)
+
+
+def test_policy_create_request_with_pipeline():
+    pipeline_data = {
+        "mode": "pre_call",
+        "steps": [
+            {"guardrail": "g1", "on_fail": "next", "on_pass": "allow"},
+            {"guardrail": "g2", "on_fail": "block", "on_pass": "allow"},
+        ],
+    }
+    req = PolicyCreateRequest(
+        policy_name="test-policy",
+        guardrails_add=["g1", "g2"],
+        pipeline=pipeline_data,
+    )
+    assert req.pipeline is not None
+    assert req.pipeline["mode"] == "pre_call"
+    assert len(req.pipeline["steps"]) == 2
+
+
+def test_policy_create_request_without_pipeline():
+    req = PolicyCreateRequest(
+        policy_name="test-policy",
+        guardrails_add=["g1"],
+    )
+    assert req.pipeline is None
+
+
+def test_policy_update_request_with_pipeline():
+    pipeline_data = {
+        "mode": "pre_call",
+        "steps": [
+            {"guardrail": "g1", "on_fail": "block", "on_pass": "allow"},
+        ],
+    }
+    req = PolicyUpdateRequest(pipeline=pipeline_data)
+    assert req.pipeline is not None
+    assert req.pipeline["steps"][0]["guardrail"] == "g1"
+
+
+def test_policy_db_response_with_pipeline():
+    pipeline_data = {
+        "mode": "pre_call",
+        "steps": [
+            {"guardrail": "g1", "on_fail": "next", "on_pass": "allow"},
+            {"guardrail": "g2", "on_fail": "block", "on_pass": "allow"},
+        ],
+    }
+    resp = PolicyDBResponse(
+        policy_id="test-id",
+        policy_name="test-policy",
+        guardrails_add=["g1", "g2"],
+        pipeline=pipeline_data,
+    )
+    assert resp.pipeline is not None
+    assert resp.pipeline["mode"] == "pre_call"
+    dumped = resp.model_dump()
+    assert dumped["pipeline"]["steps"][0]["guardrail"] == "g1"
+
+
+def test_policy_db_response_without_pipeline():
+    resp = PolicyDBResponse(
+        policy_id="test-id",
+        policy_name="test-policy",
+    )
+    assert resp.pipeline is None
+    dumped = resp.model_dump()
+    assert dumped["pipeline"] is None
+
+
+def test_policy_create_request_roundtrip():
+    pipeline_data = {
+        "mode": "post_call",
+        "steps": [
+            {
+                "guardrail": "g1",
+                "on_fail": "modify_response",
+                "on_pass": "next",
+                "pass_data": True,
+                "modify_response_message": "custom msg",
+            },
+        ],
+    }
+    req = PolicyCreateRequest(
+        policy_name="roundtrip-test",
+        guardrails_add=["g1"],
+        pipeline=pipeline_data,
+    )
+    dumped = req.model_dump()
+    restored = PolicyCreateRequest(**dumped)
+    assert restored.pipeline == pipeline_data