karma-runner/karma

add an option to clear console when using autoWatch:true

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#1004 opened on Apr 4, 2014

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 (22 comments) (6 reactions) (1 assignee)JavaScript (11,918 stars) (1,703 forks)batch import
discusshelp wantedtype: backlogtype: feature

Description

This is based on http://stackoverflow.com/questions/22824255/karma-clear-screen-after-running-tests.

Simply adding this in watcher.js at line 91, makes this work (at least on windows). All that is left to do is add the options to the config and pass them to watcher.

var util = require('util');
util.print("\u001b[2J\u001b[0;0H");

Is this something we want to add? I think it's useful.

Maybe we should instead support a beforeRun script that people could use to do that instead.

A workaround is to create a clear-screen-reporter that just overrides this.onRunStart and does

this.onRunStart = function() {
   console.log("\u001b[2J\u001b[0;0H");
};

Contributor guide

Tech stack
javascriptnodejsshell
Domain
testingclideveloper experience
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Karma configurationNode.js basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Examine the watcher.js file at the linked line to understand the current autoWatch flow. Review the discussion in the issue comments, especially the suggestion for a 'beforeRun' script and the custom reporter workaround. Check the config file structure for adding a new boolean option like 'clearScreen'. The implementation should utilize the escape sequence \u001b[2J\u001b[0;0H to clear the console, ensuring cross platform compatibility. Also investigate if any open PRs or forks address this feature.