Browser Javascript Tdd

Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests. Use when adding client-side behavior, debugging DOM tests, choosing between JS unit tests and browser functional tests, or making JavaScript testable without overusing Selenium.

Tasks

Add a failing DOM behavior test for a new client-side interaction, implement minimal JavaScript to make it pass, and refactor selectors while tests remain green
Choose the test boundary for a feature by deciding what JavaScript owns versus the server, and keep one end-to-end test only where server-client-CSS wiring must be proven together

Inputs

The user-visible browser behavior to test-drive
The markup required for a DOM fixture
The JavaScript module or function under test

Outputs

Failing then passing DOM behavior tests
A stable DOM fixture with explicit initialization
A recorded test runner command and result

Limitations and checks

Do not use Selenium to exhaustively test JavaScript branches
Do not test third-party framework behavior
Do not hide asynchronous timing with sleeps
Confirm that global DOM state and event listeners do not leak between tests
Confirm that an integration check was recorded when real page wiring changed
Confirm that an initialization function is exposed and tested directly when code depends on page load timing

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Browser Javascript Tdd

Tasks

Inputs

Outputs

Limitations and checks

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