Principle:Nightwatchjs Nightwatch Component Test Execution

Knowledge Sources	Nightwatch Component Testing Nightwatch
Domains	Testing, Component_Testing, CLI
Last Updated	2026-02-12 00:00 GMT

Overview

A specialized test execution mode that starts a development server, renders components in isolation, and runs component-level tests via a CLI flag.

Description

Component Test Execution extends the standard test execution pipeline with an additional component-specific phase: starting a development server (Vite or Webpack) that bundles and serves individual components. The --component CLI flag activates this mode, switching the test runner from navigating to URLs to rendering components in the browser via the dev server.

Usage

Use this execution mode when running component tests. Always include the --component flag to differentiate from E2E test execution.

Theoretical Basis

The component test execution pipeline extends the standard pipeline:

Start dev server (Vite/Webpack) to bundle components
Parse CLI arguments with --component flag
Initialize browser session
For each test: Render component via plugin → Execute test → Collect results
Stop dev server and report results

Related Pages

Implemented By

Implementation:Nightwatchjs_Nightwatch_Nightwatch_Component_CLI

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Principle

Implementation

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