Files
shields/lib/service-test-runner/runner.js
2018-08-19 00:40:02 -04:00

68 lines
1.5 KiB
JavaScript

'use strict'
const { loadTesters } = require('../../services')
/**
* Load a collection of ServiceTester objects and register them with Mocha.
*/
class Runner {
/**
* Function to invoke before each test. This is a stub which can be
* overridden on instances.
*/
beforeEach() {}
/**
* Prepare the runner by loading up all the ServiceTester objects.
*/
prepare() {
this.testers = loadTesters()
this.testers.forEach(tester => {
tester.beforeEach = () => {
this.beforeEach()
}
})
}
_testersForService(service) {
return this.testers.filter(t => t.id.toLowerCase().startsWith(service))
}
/**
* Limit the test run to the specified services.
*
* @param services An array of service id prefixes to run
*/
only(services) {
const normalizedServices = new Set(services.map(v => v.toLowerCase()))
const missingServices = []
normalizedServices.forEach(service => {
const testers = this._testersForService(service)
if (testers.length === 0) {
missingServices.push(service)
}
testers.forEach(tester => {
tester.only()
})
})
// Throw at the end, to provide a better error message.
if (missingServices.length > 0) {
throw Error('Unknown services: ' + missingServices.join(', '))
}
}
/**
* Register the tests with Mocha.
*/
toss() {
this.testers.forEach(tester => {
tester.toss()
})
}
}
module.exports = Runner