Add retention policy option regression coverage

webui/src/features/privacy/RetentionPolicyManagement.tsx

@@ -21,6 +21,7 @@ import FormField from "../../components/FormField";
 import ToggleSwitch from "../../components/ToggleSwitch";
 import { useUnsavedDraftGuard } from "../../components/UnsavedChangesGuard";
 import {
+  privacyRetentionAuditDetailOptionDisabled,
   privacyRetentionLocalAllowsLowerLevel,
   privacyRetentionParentAllowsField } from
 "./policyLogic";
@@ -70,8 +71,6 @@ type FieldDefinition = {
 type RawJsonValue = "inherit" | "keep" | "disable";
 type AuditDetailValue = "inherit" | PrivacyRetentionPolicy["audit_detail_level"];
 
-const auditDetailOrder: Record<PrivacyRetentionPolicy["audit_detail_level"], number> = { full: 0, redacted: 1, minimal: 2 };
-
 const defaultAllowLowerLevelLimits: PrivacyRetentionLimitPermissions = {
   store_raw_campaign_json: true,
   raw_campaign_json_retention_days: true,
@@ -517,9 +516,8 @@ function RetentionDaysField({ value, disabled, placeholder, max, onChange }: {va
 }
 
 function AuditDetailSelect({ value, includeInherit, parentValue, disabled, onChange }: {value: AuditDetailValue;includeInherit: boolean;parentValue?: PrivacyRetentionPolicy["audit_detail_level"] | null;disabled: boolean;onChange: (value: AuditDetailValue) => void;}) {
-  const minimumOrder = parentValue ? auditDetailOrder[parentValue] : 0;
   function optionDisabled(option: PrivacyRetentionPolicy["audit_detail_level"]): boolean {
-    return auditDetailOrder[option] < minimumOrder;
+    return privacyRetentionAuditDetailOptionDisabled(option, parentValue);
   }
 
   return (

webui/src/features/privacy/policyLogic.ts

@@ -11,6 +11,10 @@ export type RetentionPolicyLimitCarrier = {
   allow_lower_level_limits?: Partial<Record<PrivacyRetentionPolicyFieldKey, boolean>> | null;
 };
 
+export type PrivacyRetentionAuditDetailLevel = "full" | "redacted" | "minimal";
+
+const auditDetailOrder: Record<PrivacyRetentionAuditDetailLevel, number> = { full: 0, redacted: 1, minimal: 2 };
+
 export function privacyRetentionParentAllowsField(parentPolicy: RetentionPolicyLimitCarrier | null, key: PrivacyRetentionPolicyFieldKey): boolean {
   return !parentPolicy || parentPolicy.allow_lower_level_limits?.[key] !== false;
 }
@@ -27,3 +31,11 @@ export function privacyRetentionLocalAllowsLowerLevel(
   if (localValue !== undefined) return localValue && privacyRetentionParentAllowsField(parentPolicy, key);
   return privacyRetentionParentAllowsField(parentPolicy, key);
 }
+
+export function privacyRetentionAuditDetailOptionDisabled(
+  option: PrivacyRetentionAuditDetailLevel,
+  parentValue?: PrivacyRetentionAuditDetailLevel | null
+): boolean {
+  const minimumOrder = parentValue ? auditDetailOrder[parentValue] : 0;
+  return auditDetailOrder[option] < minimumOrder;
+}

webui/tests/privacy-policy.test.ts

@@ -1,6 +1,7 @@
 import {
   type PrivacyRetentionPolicyFieldKey,
   type RetentionPolicyLimitCarrier,
+  privacyRetentionAuditDetailOptionDisabled,
   privacyRetentionLocalAllowsLowerLevel,
   privacyRetentionParentAllowsField
 } from "../src/features/privacy/policyLogic";
@@ -32,3 +33,6 @@ assert(!privacyRetentionLocalAllowsLowerLevel(localPatch, parentPolicy, field, f
 assert(privacyRetentionParentAllowsField(null, field), "missing parent policy should allow local field controls");
 assert(privacyRetentionLocalAllowsLowerLevel({}, null, field, false), "unlocked inherited lower-level controls should remain enabled");
 assert(!privacyRetentionLocalAllowsLowerLevel({ allow_lower_level_limits: { [field]: false } }, null, field, true), "system policy can disable lower-level choices");
+assert(privacyRetentionAuditDetailOptionDisabled("full", "redacted"), "lower levels cannot widen audit detail from redacted to full");
+assert(!privacyRetentionAuditDetailOptionDisabled("minimal", "redacted"), "lower levels can choose stricter audit detail than the parent");
+assert(!privacyRetentionAuditDetailOptionDisabled("full", null), "system-level audit detail options are all viable");