CodeRabbit Generated Unit Tests: Generate Unit Tests for PR Changes

This commit is contained in:
coderabbitai[bot]
2026-07-26 12:06:39 +00:00
committed by GitHub
parent 1e5b0a5c89
commit c11622721c
3 changed files with 603 additions and 25 deletions
@@ -0,0 +1,336 @@
package agentnetwork
import (
"context"
"errors"
"testing"
"time"
"github.com/golang/mock/gomock"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/netbirdio/netbird/management/internals/modules/agentnetwork/types"
"github.com/netbirdio/netbird/management/server/store"
)
// guardedPolicy builds an enabled, uncapped policy that authorises sourceGroups
// to reach providerID under the given guardrails. Uncapped keeps the selector's
// headroom scoring trivial so these tests isolate the model-allowlist gate.
func guardedPolicy(id, account string, sourceGroups []string, providerID string, guardrailIDs ...string) *types.Policy {
return &types.Policy{
ID: id,
AccountID: account,
Enabled: true,
SourceGroups: sourceGroups,
DestinationProviderIDs: []string{providerID},
GuardrailIDs: guardrailIDs,
CreatedAt: time.Now().UTC(),
}
}
// allowlistGuardrail builds a guardrail whose model allowlist is enabled and
// carries the given models.
func allowlistGuardrail(id, account string, models ...string) *types.Guardrail {
return &types.Guardrail{
ID: id,
AccountID: account,
Checks: types.GuardrailChecks{
ModelAllowlist: types.GuardrailModelAllowlist{Enabled: true, Models: models},
},
}
}
func expectPolicies(mockStore *store.MockStore, account string, policies ...*types.Policy) {
mockStore.EXPECT().
GetAccountAgentNetworkPolicies(gomock.Any(), gomock.Any(), account).
Return(policies, nil)
}
func expectGuardrails(mockStore *store.MockStore, account string, guardrails ...*types.Guardrail) {
mockStore.EXPECT().
GetAccountAgentNetworkGuardrails(gomock.Any(), gomock.Any(), account).
Return(guardrails, nil)
}
// TestSelectPolicy_ModelBlockedByAllowlist proves the authoritative allowlist
// decision: a policy authorises the (provider, group) but restricts the model,
// and the requested model isn't on the list, so the request is denied.
func TestSelectPolicy_ModelBlockedByAllowlist(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-1")
expectPolicies(mockStore, "acc-1", policy)
expectGuardrails(mockStore, "acc-1", allowlistGuardrail("g-1", "acc-1", "gpt-4o"))
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
UserID: "user-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "claude-opus-4",
})
require.NoError(t, err)
assert.False(t, res.Allow, "a model outside the only applicable policy's allowlist must be denied")
assert.Equal(t, denyCodeModelBlocked, res.DenyCode, "deny code must be model_blocked")
assert.NotEmpty(t, res.DenyReason, "deny reason must be populated")
}
// TestSelectPolicy_ModelAllowedByAllowlist is the allow counterpart: the model
// is on the applicable policy's allowlist, so selection proceeds normally.
func TestSelectPolicy_ModelAllowedByAllowlist(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-1")
expectPolicies(mockStore, "acc-1", policy)
expectGuardrails(mockStore, "acc-1", allowlistGuardrail("g-1", "acc-1", "gpt-4o", "claude-opus-4"))
expectConsumptionBatch(mockStore, nil)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
UserID: "user-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "claude-opus-4",
})
require.NoError(t, err)
assert.True(t, res.Allow, "a model on the applicable policy's allowlist must be allowed")
assert.Equal(t, "pol-A", res.SelectedPolicyID)
}
// TestSelectPolicy_CaseInsensitiveModelMatch proves the compare tolerates case
// and surrounding whitespace, matching the proxy guardrail's normalisation.
func TestSelectPolicy_CaseInsensitiveModelMatch(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-1")
expectPolicies(mockStore, "acc-1", policy)
expectGuardrails(mockStore, "acc-1", allowlistGuardrail("g-1", "acc-1", " GPT-4o "))
expectConsumptionBatch(mockStore, nil)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "gpt-4o",
})
require.NoError(t, err)
assert.True(t, res.Allow, "case/whitespace variants must match the allowlist entry")
}
// TestSelectPolicy_UnguardedPolicyIsUnrestricted is the false-deny fix: when two
// policies authorise the same (provider, group) and one has no guardrail, that
// policy makes the request unrestricted — not caught by the other's allowlist.
func TestSelectPolicy_UnguardedPolicyIsUnrestricted(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
restricted := guardedPolicy("pol-restricted", "acc-1", []string{"grp-eng"}, "prov-1", "g-1")
open := guardedPolicy("pol-open", "acc-1", []string{"grp-eng"}, "prov-1") // no guardrail
expectPolicies(mockStore, "acc-1", restricted, open)
expectGuardrails(mockStore, "acc-1", allowlistGuardrail("g-1", "acc-1", "gpt-4o"))
expectConsumptionBatch(mockStore, nil)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "claude-opus-4",
})
require.NoError(t, err)
assert.True(t, res.Allow, "an un-guardrailed policy for the same (provider, group) must leave the request unrestricted")
assert.Equal(t, "pol-open", res.SelectedPolicyID, "the unrestricted policy must be the one that pays")
}
// TestSelectPolicy_AllowlistDoesNotLeakAcrossGroups is the false-allow fix: a
// model allowlisted only for grp-b must not be usable by a grp-a caller. The
// selector considers only policies applicable to the caller's groups.
func TestSelectPolicy_AllowlistDoesNotLeakAcrossGroups(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
polA := guardedPolicy("pol-a", "acc-1", []string{"grp-a"}, "prov-1", "g-a")
polB := guardedPolicy("pol-b", "acc-1", []string{"grp-b"}, "prov-1", "g-b")
expectPolicies(mockStore, "acc-1", polA, polB)
expectGuardrails(mockStore, "acc-1",
allowlistGuardrail("g-a", "acc-1", "gpt-4o"),
allowlistGuardrail("g-b", "acc-1", "claude-opus-4"),
)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-a"},
ProviderID: "prov-1",
Model: "claude-opus-4", // only allowed for grp-b
})
require.NoError(t, err)
assert.False(t, res.Allow, "grp-b's allowlisted model must not leak to a grp-a caller")
assert.Equal(t, denyCodeModelBlocked, res.DenyCode)
}
// TestSelectPolicy_UndeterminedModelFailsClosed proves the fail-closed contract
// mirrors the proxy: with a restricted applicable policy and an empty model
// (e.g. a path-routed shape the parser couldn't map), the request is denied.
func TestSelectPolicy_UndeterminedModelFailsClosed(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-1")
expectPolicies(mockStore, "acc-1", policy)
expectGuardrails(mockStore, "acc-1", allowlistGuardrail("g-1", "acc-1", "gpt-4o"))
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "", // undetermined
})
require.NoError(t, err)
assert.False(t, res.Allow, "an undetermined model must fail closed against a restricted policy")
assert.Equal(t, denyCodeModelBlocked, res.DenyCode)
}
// TestSelectPolicy_DisabledAllowlistDoesNotRestrict proves a guardrail whose
// model allowlist is disabled imposes no model restriction, even though the
// policy references it.
func TestSelectPolicy_DisabledAllowlistDoesNotRestrict(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-1")
disabled := &types.Guardrail{
ID: "g-1",
AccountID: "acc-1",
Checks: types.GuardrailChecks{
ModelAllowlist: types.GuardrailModelAllowlist{Enabled: false, Models: []string{"gpt-4o"}},
},
}
expectPolicies(mockStore, "acc-1", policy)
expectGuardrails(mockStore, "acc-1", disabled)
expectConsumptionBatch(mockStore, nil)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "anything-goes",
})
require.NoError(t, err)
assert.True(t, res.Allow, "a disabled allowlist must not restrict the model")
assert.Equal(t, "pol-A", res.SelectedPolicyID)
}
// TestSelectPolicy_UnionAcrossPolicyGuardrails proves a policy with multiple
// allowlist guardrails permits the union of their models (not just the first).
func TestSelectPolicy_UnionAcrossPolicyGuardrails(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-1", "g-2")
expectPolicies(mockStore, "acc-1", policy)
expectGuardrails(mockStore, "acc-1",
allowlistGuardrail("g-1", "acc-1", "gpt-4o"),
allowlistGuardrail("g-2", "acc-1", "claude-opus-4"),
)
expectConsumptionBatch(mockStore, nil)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "claude-opus-4", // only in the second guardrail's list
})
require.NoError(t, err)
assert.True(t, res.Allow, "a model in any of the policy's allowlist guardrails must be permitted")
assert.Equal(t, "pol-A", res.SelectedPolicyID)
}
// TestSelectPolicy_GuardrailLookupErrorPropagates proves a store failure while
// resolving the candidate policies' guardrails surfaces as an error rather than
// silently allowing or denying the request.
func TestSelectPolicy_GuardrailLookupErrorPropagates(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-1")
expectPolicies(mockStore, "acc-1", policy)
mockStore.EXPECT().
GetAccountAgentNetworkGuardrails(gomock.Any(), gomock.Any(), "acc-1").
Return(nil, errors.New("store unavailable"))
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "gpt-4o",
})
require.Error(t, err, "a guardrail-lookup failure must surface as an error, not a silent allow/deny")
assert.Nil(t, res)
}
// TestSelectPolicy_MissingGuardrailReferenceTreatedAsUnrestricted proves a
// policy referencing a guardrail ID absent from the account's guardrails (a
// stale/orphaned reference) imposes no model restriction on its own — it is
// treated the same as no guardrail at all rather than failing closed.
func TestSelectPolicy_MissingGuardrailReferenceTreatedAsUnrestricted(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
// pol-A references "g-missing", which does not exist in the returned
// guardrails set.
policy := guardedPolicy("pol-A", "acc-1", []string{"grp-eng"}, "prov-1", "g-missing")
expectPolicies(mockStore, "acc-1", policy)
expectGuardrails(mockStore, "acc-1")
expectConsumptionBatch(mockStore, nil)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "anything-goes",
})
require.NoError(t, err)
assert.True(t, res.Allow, "an orphaned guardrail reference must not restrict the model")
assert.Equal(t, "pol-A", res.SelectedPolicyID)
}
// TestSelectPolicy_PartialCandidatesPermittedAfterModelFilter proves the
// model-allowlist gate narrows candidates before cap-based scoring runs: when
// two policies are otherwise applicable but only one permits the requested
// model, the permitting policy must be selected even though the other has a
// larger, more attractive cap.
func TestSelectPolicy_PartialCandidatesPermittedAfterModelFilter(t *testing.T) {
ctrl := gomock.NewController(t)
mgr, mockStore := newSelectorMgr(t, ctrl)
// pol-big has a much larger group token cap and would normally win the
// "bigger pool first" tiebreak, but its guardrail blocks the requested model.
polBig := guardedPolicy("pol-big", "acc-1", []string{"grp-eng"}, "prov-1", "g-restrict")
polBig.Limits = types.PolicyLimits{
TokenLimit: types.PolicyTokenLimit{Enabled: true, GroupCap: 1_000_000, WindowSeconds: 3600},
}
polSmall := guardedPolicy("pol-small", "acc-1", []string{"grp-eng"}, "prov-1", "g-permit")
polSmall.Limits = types.PolicyLimits{
TokenLimit: types.PolicyTokenLimit{Enabled: true, GroupCap: 100, WindowSeconds: 3600},
}
expectPolicies(mockStore, "acc-1", polBig, polSmall)
expectGuardrails(mockStore, "acc-1",
allowlistGuardrail("g-restrict", "acc-1", "gpt-4o"),
allowlistGuardrail("g-permit", "acc-1", "claude-opus-4"),
)
expectConsumptionBatch(mockStore, nil)
res, err := mgr.SelectPolicyForRequest(context.Background(), PolicySelectionInput{
AccountID: "acc-1",
GroupIDs: []string{"grp-eng"},
ProviderID: "prov-1",
Model: "claude-opus-4", // only pol-small's guardrail permits this
})
require.NoError(t, err)
assert.True(t, res.Allow)
assert.Equal(t, "pol-small", res.SelectedPolicyID,
"the model filter must exclude pol-big before cap scoring, even though it would otherwise outrank pol-small")
}
@@ -0,0 +1,145 @@
package grpc
import (
"context"
"errors"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"google.golang.org/grpc/codes"
grpcstatus "google.golang.org/grpc/status"
"github.com/netbirdio/netbird/management/internals/modules/agentnetwork"
"github.com/netbirdio/netbird/shared/management/proto"
)
// fakeAgentNetworkLimits is a minimal AgentNetworkLimitsService double that
// records the PolicySelectionInput it was invoked with and returns a
// pre-programmed result, so tests can assert exactly what CheckLLMPolicyLimits
// forwards to the selector.
type fakeAgentNetworkLimits struct {
gotInput agentnetwork.PolicySelectionInput
result *agentnetwork.PolicySelectionResult
err error
}
func (f *fakeAgentNetworkLimits) SelectPolicyForRequest(_ context.Context, in agentnetwork.PolicySelectionInput) (*agentnetwork.PolicySelectionResult, error) {
f.gotInput = in
if f.err != nil {
return nil, f.err
}
return f.result, nil
}
func (f *fakeAgentNetworkLimits) RecordUsage(_ context.Context, _ agentnetwork.RecordUsageInput) error {
return nil
}
// TestCheckLLMPolicyLimits_ForwardsModelToSelector proves the wiring added in
// this PR: the model the proxy extracted from the request body must reach the
// selector's PolicySelectionInput.Model unchanged, alongside the pre-existing
// account/user/group/provider fields.
func TestCheckLLMPolicyLimits_ForwardsModelToSelector(t *testing.T) {
fake := &fakeAgentNetworkLimits{result: &agentnetwork.PolicySelectionResult{Allow: true, SelectedPolicyID: "pol-1"}}
s := &ProxyServiceServer{}
s.SetAgentNetworkLimitsService(fake)
req := &proto.CheckLLMPolicyLimitsRequest{
AccountId: "acc-1",
UserId: "user-1",
GroupIds: []string{"grp-a", "grp-b"},
ProviderId: "prov-1",
Model: "claude-opus-4",
}
resp, err := s.CheckLLMPolicyLimits(context.Background(), req)
require.NoError(t, err)
require.NotNil(t, resp)
assert.Equal(t, "acc-1", fake.gotInput.AccountID)
assert.Equal(t, "user-1", fake.gotInput.UserID)
assert.Equal(t, []string{"grp-a", "grp-b"}, fake.gotInput.GroupIDs)
assert.Equal(t, "prov-1", fake.gotInput.ProviderID)
assert.Equal(t, "claude-opus-4", fake.gotInput.Model,
"the request's model must be forwarded to the selector's PolicySelectionInput")
}
// TestCheckLLMPolicyLimits_EmptyModelForwardedAsEmpty proves an
// undetermined model (empty string) is forwarded as-is rather than defaulted
// to some sentinel — the selector is the one that decides how to treat it
// (fail closed when a restriction applies).
func TestCheckLLMPolicyLimits_EmptyModelForwardedAsEmpty(t *testing.T) {
fake := &fakeAgentNetworkLimits{result: &agentnetwork.PolicySelectionResult{Allow: true}}
s := &ProxyServiceServer{}
s.SetAgentNetworkLimitsService(fake)
req := &proto.CheckLLMPolicyLimitsRequest{
AccountId: "acc-1",
ProviderId: "prov-1",
}
_, err := s.CheckLLMPolicyLimits(context.Background(), req)
require.NoError(t, err)
assert.Equal(t, "", fake.gotInput.Model, "an absent model must be forwarded as empty, not fabricated")
}
// TestCheckLLMPolicyLimits_DenyResponseCarriesModelBlockedCode proves the deny
// envelope surfaces the model-allowlist deny code + reason end to end through
// the gRPC response, matching the proxy guardrail's code so both layers agree.
func TestCheckLLMPolicyLimits_DenyResponseCarriesModelBlockedCode(t *testing.T) {
fake := &fakeAgentNetworkLimits{result: &agentnetwork.PolicySelectionResult{
Allow: false,
DenyCode: "llm_policy.model_blocked",
DenyReason: `model "claude-opus-4" is not permitted by any applicable policy allowlist`,
}}
s := &ProxyServiceServer{}
s.SetAgentNetworkLimitsService(fake)
resp, err := s.CheckLLMPolicyLimits(context.Background(), &proto.CheckLLMPolicyLimitsRequest{
AccountId: "acc-1",
ProviderId: "prov-1",
Model: "claude-opus-4",
})
require.NoError(t, err)
require.NotNil(t, resp)
assert.Equal(t, "deny", resp.Decision)
assert.Equal(t, "llm_policy.model_blocked", resp.DenyCode)
assert.NotEmpty(t, resp.DenyReason)
assert.Empty(t, resp.SelectedPolicyId, "a denied request must carry no selected policy")
}
// TestCheckLLMPolicyLimits_SelectorErrorSurfacesAsInternal proves a selector
// failure (e.g. a store error propagated from SelectPolicyForRequest) is
// surfaced as an Internal gRPC error rather than silently allowed.
func TestCheckLLMPolicyLimits_SelectorErrorSurfacesAsInternal(t *testing.T) {
fake := &fakeAgentNetworkLimits{err: errors.New("boom")}
s := &ProxyServiceServer{}
s.SetAgentNetworkLimitsService(fake)
_, err := s.CheckLLMPolicyLimits(context.Background(), &proto.CheckLLMPolicyLimitsRequest{
AccountId: "acc-1",
ProviderId: "prov-1",
Model: "gpt-4o",
})
require.Error(t, err)
st, ok := grpcstatus.FromError(err)
require.True(t, ok)
assert.Equal(t, codes.Internal, st.Code(), "selector errors must never fail open on the hot path")
}
// TestCheckLLMPolicyLimits_UnconfiguredServiceReturnsUnimplemented locks the
// documented fallback: with no AgentNetworkLimitsService wired, the RPC must
// return Unimplemented rather than panic or silently allow.
func TestCheckLLMPolicyLimits_UnconfiguredServiceReturnsUnimplemented(t *testing.T) {
s := &ProxyServiceServer{}
_, err := s.CheckLLMPolicyLimits(context.Background(), &proto.CheckLLMPolicyLimitsRequest{
AccountId: "acc-1",
ProviderId: "prov-1",
})
require.Error(t, err)
st, ok := grpcstatus.FromError(err)
require.True(t, ok)
assert.Equal(t, codes.Unimplemented, st.Code())
}