import { test } from 'node:test';
import assert from 'node:assert/strict';
import { formatUnits } from 'ethers';
import { readTokenMetadata } from '../src/token-metadata.js';
const address='0x2222222222222222222222222222222222222222';

test('missing token metadata preserves a readable raw balance instead of failing the workspace',async()=>{
  const fail=async()=>{throw Error('metadata reverted');};
  const result=await readTokenMetadata({symbol:fail,decimals:fail},address);
  assert.equal(result.rawUnits,true);
  assert.equal(result.symbol,'base units');
  assert.equal(formatUnits(1250000n,result.decimals),'1250000');
});
test('missing symbol keeps known decimals and identifies the token by address',async()=>{
  const result=await readTokenMetadata({symbol:async()=>{throw Error();},decimals:async()=>6n},address);
  assert.equal(formatUnits(1250000n,result.decimals),'1.25');
  assert.equal(result.symbol,'0x2222…2222');
  assert.equal(result.rawUnits,false);
});
test('unsupported decimal precision falls back to explicitly labeled base units',async()=>{
  for(const precision of [81n,255n,-1,NaN,1.5]){
    const result=await readTokenMetadata({symbol:async()=>'TOKEN',decimals:async()=>precision},address);
    assert.equal(result.rawUnits,true);
    assert.equal(formatUnits(123n,result.decimals),'123');
  }
});