Failing tests: cannot read properties of undefined(reading local) solana devnet

Question

Hello i am trying to test my first file in anchor and it keeps giving this error, error i got:

TypeError: Cannot read properties of undefined (reading 'local')
    at Suite.<anonymous> (/home/benny/mycalcdapp/tests/mycalcdapp.ts:6:36)
    at Object.create (/home/benny/mycalcdapp/node_modules/mocha/lib/interfaces/common.js:148:19)
    at context.describe.context.context (/home/benny/mycalcdapp/node_modules/mocha/lib/interfaces/bdd.js:42:27)
    at Object.<anonymous> (/home/benny/mycalcdapp/tests/mycalcdapp.ts:5:1)
    at Module._compile (node:internal/modules/cjs/loader:1105:14)
    at Module.m._compile (/home/benny/mycalcdapp/node_modules/ts-node/src/index.ts:439:23)
    at Module._extensions..js (node:internal/modules/cjs/loader:1159:10)

.ts file for test:

const assert = require('assert');
const anchor = require('@project-serum/anchor');
const { SystemProgram } = anchor.web3;

describe('mycalcdapp', () => {
  const provider = anchor.Provider.local();
  anchor.setProvider(provider);
  const calculator = anchor.web3.Keypair.generate();
  const program = anchor.workspace.mycalcdapp;

  it('creates a calculator', async () => {
    await program.rpc.create('Welocme to solana', {
      accounts: {
        calculator: calculator.publicKey,
        user: provider.wallet.publicKey,
        system_program: SystemProgram.programId,
      },
      signers: [calculator],
    });
    const account = await program.account.calculator.fetch(
      calculator.publicKey
    );
    assert.ok(account.greeting === 'Welcome to solana');
  });
});

i have seen another similar stackoverflow postv about not being able to read rpc but it was not answered either :(

risky last · Accepted Answer · 2022-06-22 05:55:09Z

3

so I had to import AnchorProvider and web3 from @project-serum/anchor apart from importing * as anchor. then we set the provider as const provider = AnchorProvider.local() also change const {SystemProgram } = anchor.web3 to const {SystemProgram } = web3 and change system_program inside accounts > create rpc to systemProgram and voila our test works!! full test code:

import assert from 'assert';
import * as anchor from '@project-serum/anchor';
import { AnchorProvider, web3 } from '@project-serum/anchor';
const { SystemProgram } = web3;

describe('mycalcdapp', () => {
  const provider = AnchorProvider.local();
  anchor.setProvider(provider);
  const calculator = anchor.web3.Keypair.generate();
  const program = anchor.workspace.Mycalcdapp;

  it('creates a calculator', async () => {
    await program.rpc.create('Welcome to solana', {
      accounts: {
        calculator: calculator.publicKey,
        user: provider.wallet.publicKey,
        systemProgram: SystemProgram.programId,
      },
      signers: [calculator],
    });
    const account = await program.account.calculator.fetch(
      calculator.publicKey
    );
    assert.ok(account.greeting === 'Welcome to solana');
  });
});

answered Jun 22, 2022 at 5:55

risky last

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Community Over a year ago

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

Yilmaz · Accepted Answer · 2023-01-08 21:07:45Z

0

I think the main issue in your code was the name of your dapp.

 const program = anchor.workspace.mycalcdapp;

your workspace name should be initialized with capital letter

 const program = anchor.workspace.Mycalcdapp;

also inside "it" block welcome is misspelled

await program.rpc.create('Welocme to solana', {

answered Jan 8, 2023 at 21:07

Yilmaz

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1 Comment

risky last Over a year ago

Thank you, i was confused to this day about this 💖

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