CDP Client API

Available APIs

• CDPClient available APIs

startJSCoverage: () => Promise<void>;
stopJSCoverage: () => Promise<V8CoverageEntry[]>;

startCSSCoverage: () => Promise<void>;
stopCSSCoverage: () => Promise<V8CoverageEntry[]>;

/** start both js and css coverage */
startCoverage: () => Promise<void>;
/** stop and return both js and css coverage */
stopCoverage: () => Promise<V8CoverageEntry[]>;

/** write the coverage started by NODE_V8_COVERAGE to disk on demand, returns v8 coverage dir */
writeCoverage: () => Promise<string>;

/** get istanbul coverage data */
getIstanbulCoverage: (coverageKey?: string) => Promise<any>;

Working with Node Debugger

Work with node debugger port --inspect=9229 or browser debugging port --remote-debugging-port=9229

const MCR = require('monocart-coverage-reports');
const client = await MCR.CDPClient({
    port: 9229
});
await client.startJSCoverage();
// run your test here
const coverageData = await client.stopJSCoverage();

Working with Playwright CDPSession

Work with Playwright CDPSession

const { chromium } = require('playwright');
const MCR = require('monocart-coverage-reports');
const browser = await chromium.launch();
const page = await browser.newPage();
const session = await page.context().newCDPSession(page);
const client = await MCR.CDPClient({
    session
});
// both js and css coverage
await client.startCoverage();
// run your test page here
await page.goto("your page url");
const coverageData = await client.stopCoverage();

Working with Puppeteer CDPSession

Work with Puppeteer CDPSession

const puppeteer = require('puppeteer');
const MCR = require('monocart-coverage-reports');
const browser = await puppeteer.launch({});
const page = await browser.newPage();
const session = await page.target().createCDPSession();
const client = await MCR.CDPClient({
    session
});
// both js and css coverage
await client.startCoverage();
// run your test page here
await page.goto("your page url");
const coverageData = await client.stopCoverage();

Working with Selenium Webdriver

Work with Selenium Webdriver WebSocket (Chrome/Edge Browser)

const { Builder, Browser } = require('selenium-webdriver');
const MCR = require('monocart-coverage-reports');
const driver = await new Builder().forBrowser(Browser.CHROME).build();
const pageCdpConnection = await driver.createCDPConnection('page');
const session = new MCR.WSSession(pageCdpConnection._wsConnection);
const client = await MCR.CDPClient({
    session
})