Method test

src/runtime/providers/string.ts:407–410

(prefix)

  // We accept a prefix if the return is equivalent to concatentating
  // all the args
  test(prefix) {
    let {args, returns} = this.resolve(prefix);
    return args.join("") === returns[0];
  }

  // concat always returns cardinality 1
  getProposal(tripleIndex, proposed, prefix) {