Cannot destructure property 'HTTP2_HEADER_CONTENT_ENCODING' of 'http2.constants' as it is undefined.

[dsaintpierre]

I see that this issue was filed before, but that was with a different implementation where they were able to circumvent the issue by commenting out the require line.

> Cannot destructure property 'HTTP2_HEADER_CONTENT_ENCODING' of 'http2.constants' as it is undefined.

When Cypress detects uncaught errors originating from your test code it will automatically fail the current test.

Cypress could not associate this error to any specific test.

We dynamically generated a new test to display this failure.
at Object.eval ([webpack:///./node_modules/gmail-tester/node_modules/googleapis-common/build/src/http2.js:25:7](http://localhost:53696/__/#))
    at ./node_modules/gmail-tester/node_modules/googleapis-common/build/src/http2.js (http://localhost:53696/__cypress/tests?p=cypress/e2e/1-getting-started/login.cy.ts:60765:30)
    at __webpack_require__ ([webpack:///webpack/bootstrap:19](http://localhost:53696/__/#))
    at Object.eval ([webpack:///./node_modules/gmail-tester/node_modules/googleapis-common/build/src/apirequest.js:23:11](http://localhost:53696/__/#))
    at ./node_modules/gmail-tester/node_modules/googleapis-common/build/src/apirequest.js (http://localhost:53696/__cypress/tests?p=cypress/e2e/1-getting-started/login.cy.ts:60159:30)
    at __webpack_require__ ([webpack:///webpack/bootstrap:19](http://localhost:53696/__/#))
    at ./node_modules/gmail-tester/node_modules/googleapis-common/build/src/index.js ([webpack:///./node_modules/gmail-tester/node_modules/googleapis-common/build/src/index.js:31:19](http://localhost:53696/__/#))
    at __webpack_require__ ([webpack:///webpack/bootstrap:19](http://localhost:53696/__/#))
    at ./node_modules/gmail-tester/node_modules/googleapis/build/src/apis/abusiveexperiencereport/index.js ([webpack:///./node_modules/gmail-tester/node_modules/googleapis/build/src/apis/abusiveexperiencereport/index.js:17:28](http://localhost:53696/__/#))
    at __webpack_require__ ([webpack:///webpack/bootstrap:19](http://localhost:53696/__/#))
From previous event:
    at evalScripts (http://localhost:53696/__cypress/runner/cypress_runner.js:165456:58)
    at <unknown> (http://localhost:53696/__cypress/runner/cypress_runner.js:165468:152)
From previous event:
    at runScriptsFromUrls (http://localhost:53696/__cypress/runner/cypress_runner.js:165468:136)
    at Object.runScripts (http://localhost:53696/__cypress/runner/cypress_runner.js:165483:12)
    at $Cypress.onSpecWindow (http://localhost:53696/__cypress/runner/cypress_runner.js:153515:75)

My implementation is in a helper file:

const gmail = require("gmail-tester");

...

  const email = await gmail.check_inbox(
    path.resolve(__dirname, "credentials.json"),
    path.resolve(__dirname, "token.json"),
   ...

[johnmccollum]

I had this problem, and it was caused by not setting up the task properly - requiring "gmail-tester" in the wrong place will cause that issue.

You need to make sure that it runs as a cy.task, since this code should run on the Node side.

For my implementation (Cypress 11), I had to do the following in cypress.config.ts:

import { defineConfig } from 'cypress';
import * as path from 'path';
import * as gmail from 'gmail-tester';

export default defineConfig({
  e2e: {
    setupNodeEvents: (on) =>
      on('task', {
        'gmail:check': async (args) => {
          const { from, to, subject } = args;
          const email = await gmail.check_inbox(
            path.resolve(__dirname, './path/to/credentials.json'),
            path.resolve(__dirname, './path/to/token.json'),
            {
              subject: subject,
              from: from,
              to: to,
              include_body: true,
              wait_time_sec: 10,
              max_wait_time_sec: 30,
            }
          );
          return email;
        },
      }),
  },
});

You can then call the task in a test by doing:

cy.task('gmail:check', {
  from: 'me@test.com',
  subject: 'Whatever',
}).then((email) => {
  assert.isNotNull(email, `Email was found`);
});

Hope that helps!