Add test runner for Jasmine

[gayanW]

I have already recorded some data using this runner from my local machine:
https://app.launchableinc.com/organizations/launchableinc/workspaces/gweerakutti/data/test-sessions/5286151

If you want to create a new project and test from scratch:

% npm install --save-dev jasmine jasmine-json-test-reporter
% npx jasmine init
% npx jasmine example
% git commit -a -m "Initial commit"

Create spec/helpers/jasmine-json-test-reporter.js

var JSONReporter = require('jasmine-json-test-reporter');
jasmine.getEnv().addReporter(new JSONReporter({
	file: 'jasmine-report.json'
}));

Record tests

BUILD_NAME=jasmine_build
launchable record build --name ${BUILD_NAME}
launchable record session --build ${BUILD_NAME} > session.txt

# Write all tests to a file
find spec/jasmine_examples -type f > test_list.txt

# Run all tests
npx jasmine $(cat test_list.txt)

launchable record tests --session $(cat session.txt) --base $(pwd) jasmine jasmine-report.json

Subset

cat test_list.txt | launchable subset --target 25% --session $(cat session.txt) jasmine > subset.txt
npx jasmine $(cat subset.txt)

[kohsuke]

Thanks for providing details to run Jasmine ourselves. Indeed, from time to time we need to go back to some test runners to experiment with its behavior, and information like this is really handy. While you are at it, I'd encourage you to add tests/data/jasmine/README.md or something and puts your PR description there.