Function assertBigNumberClosePercent

test/helpers/assert.ts:34–51

(
  a: BigNumberish,
  b: BigNumberish,
  variance: string = "0.02",
  reason: string = "",
)

}

export function assertBigNumberClosePercent(
  a: BigNumberish,
  b: BigNumberish,
  variance: string = "0.02",
  reason: string = "",
) {
  const aBigNumber = BigNumber.from(a);
  const bBigNumber = BigNumber.from(b);
  const varianceBigNumber = ethers.utils.parseUnits(variance, 16);

  if (aBigNumber.eq(bBigNumber)) return;

  const diff = aBigNumber.sub(bBigNumber).abs().mul(ethers.constants.WeiPerEther).div(aBigNumber.add(bBigNumber));
  assert.ok(
    diff.lte(varianceBigNumber),
    `${reason}: diff exceeded ${variance}: ${aBigNumber.toString()} ${bBigNumber.toString()}`,
  );
}