diff --git a/src/enforcementLevel.ts b/src/enforcementLevel.ts
index 842dd26..d76280d 100644
--- a/src/enforcementLevel.ts
+++ b/src/enforcementLevel.ts
@@ -28,6 +28,7 @@ export function isEnforcementLevel(o: any): o is EnforcementLevel {
             case "advisory":
             case "disabled":
             case "mandatory":
+            case "remediate":
                 return true;
             default:
                 return exhaustiveFalse(enforcementLevel);
diff --git a/src/tests/util.ts b/src/tests/util.ts
index 32f7e65..f2da4e8 100644
--- a/src/tests/util.ts
+++ b/src/tests/util.ts
@@ -103,6 +103,9 @@ async function runResourcePolicy(resPolicy: policy.ResourceValidationPolicy, arg
         ? resPolicy.validateResource
         : [resPolicy.validateResource];
     for (const validation of validations) {
+        if (!validation) {
+            throw Error("validateResource must be a function or array of functions.");
+        }
         await Promise.resolve(validation(args, report));
     }
     return violations;