Add policy consistency tests

Enforce User.update :own across all permission sets.
Verify READ bypass + UPDATE HasPermission pattern.

test/mv/authorization/policy_consistency_test.exs

@@ -0,0 +1,104 @@
+defmodule Mv.Authorization.PolicyConsistencyTest do
+  @moduledoc """
+  Tests to ensure policy consistency across resources.
+
+  Verifies that resources with scope :own/:linked permissions for READ
+  have corresponding READ bypass policies (as required by the two-tier pattern).
+  """
+  use ExUnit.Case, async: true
+
+  alias Mv.Authorization.PermissionSets
+
+  describe "Policy Pattern Consistency" do
+    test "resources with scope :own/:linked for READ have READ bypass" do
+      # Get all permission sets
+      permission_sets = PermissionSets.all_permission_sets()
+
+      # Collect all resources with scope :own/:linked for READ
+      resources_with_filter_scope =
+        for permission_set <- permission_sets,
+            permissions = PermissionSets.get_permissions(permission_set),
+            perm <- permissions.resources,
+            perm.action == :read,
+            perm.scope in [:own, :linked],
+            perm.granted == true,
+            do: perm.resource
+
+      # Remove duplicates
+      unique_resources = Enum.uniq(resources_with_filter_scope)
+
+      # Expected resources that should have READ bypass
+      expected_resources = ["User", "Member", "CustomFieldValue"]
+
+      # Verify all expected resources are in the list
+      for resource <- expected_resources do
+        assert resource in unique_resources,
+               "Resource #{resource} has scope :own/:linked for READ but may not have READ bypass policy. " <>
+                 "See docs/policy-bypass-vs-haspermission.md for the two-tier pattern."
+      end
+    end
+
+    test "resources with scope :own/:linked for UPDATE use HasPermission" do
+      # Get all permission sets
+      permission_sets = PermissionSets.all_permission_sets()
+
+      # Collect all resources with scope :own/:linked for UPDATE
+      resources_with_filter_scope =
+        for permission_set <- permission_sets,
+            permissions = PermissionSets.get_permissions(permission_set),
+            perm <- permissions.resources,
+            perm.action == :update,
+            perm.scope in [:own, :linked],
+            perm.granted == true,
+            do: perm.resource
+
+      # Remove duplicates
+      unique_resources = Enum.uniq(resources_with_filter_scope)
+
+      # Expected resources that should use HasPermission for UPDATE
+      expected_resources = ["User", "Member", "CustomFieldValue"]
+
+      # Verify all expected resources are in the list
+      for resource <- expected_resources do
+        assert resource in unique_resources,
+               "Resource #{resource} should use HasPermission for UPDATE with scope :own/:linked. " <>
+                 "See docs/policy-bypass-vs-haspermission.md for the two-tier pattern."
+      end
+    end
+
+    test "all permission sets grant User.update (own or all)" do
+      # Verify that all permission sets grant User.update
+      # - :own_data, :read_only, :normal_user grant User.update :own
+      # - :admin grants User.update :all (can update all users)
+      permission_sets = PermissionSets.all_permission_sets()
+
+      for permission_set <- permission_sets do
+        permissions = PermissionSets.get_permissions(permission_set)
+
+        user_update_perm =
+          Enum.find(permissions.resources, fn perm ->
+            perm.resource == "User" and perm.action == :update
+          end)
+
+        assert user_update_perm != nil,
+               "Permission set #{permission_set} must grant User.update. " <>
+                 "All permission sets must allow users to update credentials."
+
+        assert user_update_perm.scope in [:own, :all],
+               "Permission set #{permission_set} must grant User.update with scope :own or :all. " <>
+                 "Current scope: #{user_update_perm.scope}"
+
+        assert user_update_perm.granted == true,
+               "Permission set #{permission_set} must grant User.update. " <>
+                 "Current granted: #{user_update_perm.granted}"
+
+        # Non-admin sets should use :own
+        if permission_set != :admin do
+          assert user_update_perm.scope == :own,
+                 "Permission set #{permission_set} must grant User.update with scope :own. " <>
+                   "Current scope: #{user_update_perm.scope}"
+        end
+      end
+    end
+  end
+end