ethers.js/lib.esm/_tests/utils.js

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2022-09-05 23:57:11 +03:00
import fs from "fs";
import path from "path";
import zlib from 'zlib';
// Find the package root (based on the nyc output/ folder)
const root = (function () {
let root = process.cwd();
while (true) {
if (fs.existsSync(path.join(root, "output"))) {
return root;
}
const parent = path.join(root, "..");
if (parent === root) {
break;
}
root = parent;
}
throw new Error("could not find root");
})();
// Load the tests
export function loadTests(tag) {
const filename = path.resolve(root, "testcases", tag + ".json.gz");
return JSON.parse(zlib.gunzipSync(fs.readFileSync(filename)).toString());
}
export function log(context, text) {
if (context && context.test && typeof (context.test._ethersLog) === "function") {
context.test._ethersLog(text);
}
else {
console.log(text);
}
}
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async function stall(duration) {
return new Promise((resolve) => { setTimeout(resolve, duration); });
}
const ATTEMPTS = 5;
export async function retryIt(name, func) {
it(name, async function () {
this.timeout(ATTEMPTS * 5000);
for (let i = 0; i < ATTEMPTS; i++) {
try {
await func.call(this);
return;
}
catch (error) {
if (error.message === "sync skip; aborting execution") {
// Skipping a test; let mocha handle it
throw error;
}
else if (error.code === "ERR_ASSERTION") {
// Assertion error; let mocha scold us
throw error;
}
else {
if (i === ATTEMPTS - 1) {
stats.pushRetry(i, name, error);
}
else {
await stall(500 * (1 << i));
stats.pushRetry(i, name, null);
}
}
}
}
// All hope is lost.
throw new Error(`Failed after ${ATTEMPTS} attempts; ${name}`);
});
}
const _guard = {};
export class Stats {
#stats;
constructor(guard) {
if (guard !== _guard) {
throw new Error("private constructor");
}
this.#stats = [];
}
#currentStats() {
if (this.#stats.length === 0) {
throw new Error("no active stats");
}
return this.#stats[this.#stats.length - 1];
}
pushRetry(attempt, line, error) {
const { retries } = this.#currentStats();
if (attempt > 0) {
retries.pop();
}
if (retries.length < 100) {
retries.push({
message: `${attempt + 1} failures: ${line}`,
error
});
}
}
start(name) {
this.#stats.push({ name, retries: [] });
}
end(context) {
let log = console.log.bind(console);
if (context && typeof (context._ethersLog) === "function") {
log = context._ethersLog;
}
const { name, retries } = this.#currentStats();
if (retries.length === 0) {
return;
}
log(`Warning: The following tests required retries (${name})`);
retries.forEach(({ error, message }) => {
log(" " + message);
if (error) {
log(error);
}
});
}
}
export const stats = new Stats(_guard);
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//# sourceMappingURL=utils.js.map