@web/test-runner-chrome/dist/ChromeLauncherPage.js

Chrome browser launcher for Web Test Runner

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ChromeLauncherPage = void 0;
const test_runner_coverage_v8_1 = require("@web/test-runner-coverage-v8");
class ChromeLauncherPage {
    config;
    testFiles;
    browser;
    puppeteerPage;
    nativeInstrumentationEnabledOnPage = false;
    patchAdded = false;
    resolvers = {};
    constructor(config, testFiles, product, puppeteerPage) {
        this.config = config;
        this.testFiles = testFiles;
        this.browser = product;
        this.puppeteerPage = puppeteerPage;
    }
    async runSession(url, coverage) {
        if (coverage &&
            this.config.coverageConfig?.nativeInstrumentation !== false &&
            this.browser === 'chromium') {
            if (this.nativeInstrumentationEnabledOnPage) {
                await this.puppeteerPage.coverage.stopJSCoverage();
            }
            this.nativeInstrumentationEnabledOnPage = true;
            await this.puppeteerPage.coverage.startJSCoverage({
                includeRawScriptCoverage: true,
            });
        }
        await this.puppeteerPage.setViewport({ height: 600, width: 800 });
        await this.puppeteerPage.goto(url);
    }
    async stopSession() {
        const testCoverage = await this.collectTestCoverage(this.config, this.testFiles);
        // navigate to an empty page to kill any running code on the page, stopping timers and
        // breaking a potential endless reload loop
        await this.puppeteerPage.goto('about:blank');
        return { testCoverage };
    }
    async collectTestCoverage(config, testFiles) {
        const userAgentPromise = this.puppeteerPage
            .browser()
            .userAgent()
            .catch(() => undefined);
        try {
            const coverageFromBrowser = await this.puppeteerPage.evaluate(() => window.__coverage__);
            if (coverageFromBrowser) {
                // coverage was generated by JS, return that
                return coverageFromBrowser;
            }
        }
        catch {
            // evaluate throws when the test navigates in the browser
        }
        if (config.coverageConfig?.nativeInstrumentation === false) {
            throw new Error('Coverage is enabled with nativeInstrumentation disabled. ' +
                'Expected coverage provided in the browser as a global __coverage__ variable.' +
                'Use a plugin like babel-plugin-istanbul to generate the coverage, or enable native instrumentation.');
        }
        if (!this.nativeInstrumentationEnabledOnPage) {
            return undefined;
        }
        const [userAgent, coverageResult] = await Promise.all([
            userAgentPromise,
            this.puppeteerPage.coverage?.stopJSCoverage(),
        ]);
        const v8Coverage = coverageResult
            ?.map(entry => entry.rawScriptCoverage)
            .filter((cov) => cov !== undefined);
        this.nativeInstrumentationEnabledOnPage = false;
        return (0, test_runner_coverage_v8_1.v8ToIstanbul)(config, testFiles, v8Coverage, userAgent);
    }
}
exports.ChromeLauncherPage = ChromeLauncherPage;
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