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

import path from "path";
import bls from "../../src";
import {padLeft} from "../../src/helpers/utils";
import {describeDirectorySpecTest, InputType} from "@chainsafe/eth2.0-spec-test-util/lib/single";

interface SignMessageTestCase {
    data: {
        input: {
            privkey: string,
            message: string,
            domain: string
        };
        output: string;
    };
}

describeDirectorySpecTest<SignMessageTestCase, string>(
    "priv_to_pub",
    path.join(__dirname, "../../../spec-test-cases/tests/general/phase0/bls/sign_msg/small"),
    (testCase => {
        const signature =  bls.sign(
            Buffer.from(testCase.data.input.privkey.replace("0x", ""), "hex"),
            Buffer.from(testCase.data.input.message.replace("0x", ""), "hex"),
            padLeft(Buffer.from(testCase.data.input.domain.replace('0x', ''), 'hex'), 8)
        );
        return `0x${signature.toString("hex")}`;
    }),
    {
        inputTypes: {
            data: InputType.YAML,
        },
        getExpected: (testCase => testCase.data.output)
    }
);