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metamask-extension/ui/helpers/utils/gas.test.js
Elliot Winkler f8f4397339
Degrade gracefully when gas API is down (#13865)
When the gas API is down, the logic we use will no longer compute all of
the data that the gas API returns in order to reduce the burden on
Infura. Specifically, only estimated fees for different priority levels,
as well as the latest base fee, will be available; all other data
points, such as the latest and historical priority fee range and network
stability, will be missing. This commit updates the frontend logic to
account for this lack of data by merely hiding the relevant pieces of
the UI that would otherwise be shown.
2022-03-11 11:59:58 -07:00

112 lines
3.4 KiB
JavaScript

import { PRIORITY_LEVELS } from '../../../shared/constants/gas';
import {
addTenPercent,
gasEstimateGreaterThanGasUsedPlusTenPercent,
formatGasFeeOrFeeRange,
} from './gas';
describe('Gas utils', () => {
describe('gasEstimateGreaterThanGasUsedPlusTenPercent', () => {
const compareGas = (estimateValues) => {
return gasEstimateGreaterThanGasUsedPlusTenPercent(
{
maxFeePerGas: '0x59682f10',
maxPriorityFeePerGas: '0x59682f00',
},
{
medium: estimateValues,
},
PRIORITY_LEVELS.MEDIUM,
);
};
it('should return true if gas used in transaction + 10% is greater that estimate', () => {
const result = compareGas({
suggestedMaxPriorityFeePerGas: '7',
suggestedMaxFeePerGas: '70',
});
expect(result).toStrictEqual(true);
});
it('should return false if gas used in transaction + 10% is less that estimate', () => {
const result = compareGas({
suggestedMaxPriorityFeePerGas: '.5',
suggestedMaxFeePerGas: '1',
});
expect(result).toStrictEqual(false);
});
});
describe('addTenPercent', () => {
it('should add 10% to hex value passed', () => {
const result = addTenPercent('0x59682f00');
expect(result).toStrictEqual('0x62590080');
});
it('should return undefined if undefined value is passed', () => {
const result = addTenPercent(undefined);
expect(result).toBeUndefined();
});
});
describe('formatGasFeeOrFeeRange', () => {
describe('given a singular fee', () => {
it('should return a string "X GWEI" where X is the fee rounded to the given precision', () => {
expect(formatGasFeeOrFeeRange('23.43', { precision: 1 })).toStrictEqual(
'23.4 GWEI',
);
});
});
describe('given an array of two fees', () => {
describe('given a single precision', () => {
it('should return a string "X - Y GWEI" where X and Y are the fees rounded to the given precision', () => {
expect(
formatGasFeeOrFeeRange(['23.43', '83.9342'], { precision: 1 }),
).toStrictEqual('23.4 - 83.9 GWEI');
});
});
describe('given two precisions', () => {
it('should return a string "X - Y GWEI" where X and Y are the fees rounded to the given precisions', () => {
expect(
formatGasFeeOrFeeRange(['23.43', '83.9342'], { precision: [1, 0] }),
).toStrictEqual('23.4 - 84 GWEI');
});
});
describe('given more than two precisions', () => {
it('should ignore precisions past 2', () => {
expect(
formatGasFeeOrFeeRange(['23.43', '83.9342'], {
precision: [1, 0, 999],
}),
).toStrictEqual('23.4 - 84 GWEI');
});
});
});
describe('given an array of more than two fees', () => {
it('should ignore fees past two', () => {
expect(
formatGasFeeOrFeeRange(['23.43', '83.9342', '300.3414'], {
precision: 1,
}),
).toStrictEqual('23.4 - 83.9 GWEI');
});
});
describe('if the fee is null', () => {
it('should return null', () => {
expect(formatGasFeeOrFeeRange(null, { precision: 1 })).toBeNull();
});
});
describe('if the fee is undefined', () => {
it('should return null', () => {
expect(formatGasFeeOrFeeRange(null, { precision: 1 })).toBeNull();
});
});
});
});