chainsafe-bls/test/spec/sign.test.ts

import path from "path";
import bls, {initBLS} from "../../src";
import {describeDirectorySpecTest, InputType} from "@chainsafe/lodestar-spec-test-util";

interface ISignMessageTestCase {
  data: {
    input: {
      privkey: string;
      message: string;
    };
    output: string;
  };
}

before(async function f() {
  await initBLS();
});

describeDirectorySpecTest<ISignMessageTestCase, string>(
  "BLS - sign",
  path.join(__dirname, "../../node_modules/@chainsafe/eth2-spec-tests/tests/general/phase0/bls/sign/small"),
  (testCase) => {
    const signature = bls.sign(
      Buffer.from(testCase.data.input.privkey.replace("0x", ""), "hex"),
      Buffer.from(testCase.data.input.message.replace("0x", ""), "hex")
    );
    return `0x${signature.toString("hex")}`;
  },
  {
    inputTypes: {
      data: InputType.YAML,
    },
    getExpected: (testCase) => testCase.data.output,
  }
);