E2e default login helper

Skill kjuhwa/skills-hub/skills/testing/e2e-default-login-helper

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Install

npx -y skills add kjuhwa/skills-hub --skill e2e-default-login-helper

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What its author says it does

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Reusable Playwright loginAsDefault helper that authenticates via API (send-code + verify-code), injects the token into localStorage, and navigates to a workspace-scoped URL.

SKILL.md

2.6 KB, 507 tokens by cl100k_base, as published. Nobody here has run it

When to use

Playwright E2E suite against a real backend + frontend in dev/staging.
You have a stable test user and want to skip the browser login flow.

Steps

Define constants for the default E2E user:

const DEFAULT_E2E_NAME = "E2E User";
const DEFAULT_E2E_EMAIL = "[email protected]";
const DEFAULT_E2E_WORKSPACE = "e2e-workspace";

Helper that uses TestApiClient for the API calls, then injects the token into browser storage:

export async function loginAsDefault(page: Page): Promise<string> {
  const api = new TestApiClient();
  await api.login(DEFAULT_E2E_EMAIL, DEFAULT_E2E_NAME);
  const workspace = await api.ensureWorkspace("E2E Workspace", DEFAULT_E2E_WORKSPACE);

  const token = api.getToken();
  await page.goto("/login");                    // start from a safe URL
  await page.evaluate((t) => {
    localStorage.setItem("myapp_token", t);
  }, token);
  await page.goto(`/${workspace.slug}/issues`);
  await page.waitForURL("**/issues", { timeout: 10000 });
  return workspace.slug;
}

In test specs:

let api: TestApiClient;
test.beforeEach(async ({ page }) => {
  api = await createTestApi();
  await loginAsDefault(page);
});
test.afterEach(() => api.cleanup());

Example

test("create and view an issue", async ({ page }) => {
  const issue = await api.createIssue("Test Issue");
  await page.goto(`/e2e-workspace/issues/${issue.id}`);
  await expect(page.getByText("Test Issue")).toBeVisible();
});

Caveats

loginAsDefault starts with page.goto("/login") before writing to localStorage. Without that, page.evaluate may run on about:blank where localStorage writes don't persist.
Tests that exercise the login flow itself shouldn't use this helper — they need to go through the UI. Name them *-login.spec.ts and opt out.
If the storage key or token format changes, update the helper first; Playwright tests will surface the breakage fast but the fix is in one place.