uint value usage as a parameter in truffle

Question

How can I send a uint parameter value to the contract in truffle?

i have a function that has two uint parameter and I wrote test that function but I guess the uint parameters cannt be sent as a correctly. Also I cannot see in mapping too the boolean value result of the uint parameter. (the HashList is mapping )

I'm putting log messages in truffle :

it('should be mint the token only owner', async()=>{
  const _hash = await actions.generateHash.call(50, '123');
  const inList = await actions.HashList(_hash);
  console.log('is there in list?    '+ inList);
  console.log('hash: '+_hash);
  console.log('all info: '+accounts[3], 50, '123', _hash);

  const res = await actions.create(accounts[3], 50, '123', _hash{from: accounts[0]});

  assert.isTrue(res, 'could not create. Please check contract or test code.' );

  });

My test outputs in here :

is there in list?false
hash: 38391047091755091013202618179480389830368877342597680687864504738175347992246
all info : 0x916666dBb04c97ea3D92647dF5b0De5Be5cD038B 50 123 BN {
  negative: 0,
  words: [
    51521206,       11804147,
    59004577,       116902,
    25125010,       60098687,
    16719740,       18977897,
    526954,         1390628,
    <1 empty item>
  ],
  length: 10,
  red: null
} BN {
  negative: 0,
  words: [
    51521206,       11804147,
    59004577,       116902,
    25125010,       60098687,
    16719740,       18977897,
    526954,         1390628,
    <1 empty item>
  ],
  length: 10,
  red: null
}

what is BN in all info output? why the Uint parameters shown as BN ?

thank you,

Answer 1

1. BN is a library for calculating with big numbers in JavaScript; see here for more details

2. In order to print a complex object properly, use JSON.stringify on it; for example:

   Instead of console.log('all info: '+accounts[3], 50, '123', res);

   Do console.log('all info: '+accounts[3], 50, '123', JSON.stringify(res, null, 4));