import {
 assert,
 number,
 props,
 string,
 ValidationError,
} from "https://deno.land/x/abstruct@$VERSION/mod.ts";
import {
 assertEquals,
 assertIsError,
} from "https://deno.land/std/testing/asserts.ts";

const Profile = props({ name: string, age: number });

try {
 assert(Profile, { name: null, age: null });
} catch (e) {
 assertIsError(e, ValidationError, "<string validation message>");
}