Support choice of runner(s)

config.js

@@ -24,6 +24,7 @@ if (fs.existsSync(jsonPath)) {
 		database: env('DATABASE', jsonConfig.database),
 		host: env('HOST', jsonConfig.host),
 		port: Number(env('PORT', jsonConfig.port)),
+		runners: possibleCsvListToArray(env('RUNNERS', jsonConfig.runners)) || ['htmlcs', 'axe'],
 		cron: env('CRON', jsonConfig.cron),
 		chromeLaunchConfig: jsonConfig.chromeLaunchConfig || {}
 	};
@@ -32,6 +33,7 @@ if (fs.existsSync(jsonPath)) {
 		database: env('DATABASE', 'mongodb://localhost/pa11y-webservice'),
 		host: env('HOST', '0.0.0.0'),
 		port: Number(env('PORT', '3000')),
+		runners: env('RUNNERS', ['htmlcs', 'axe']),
 		cron: env('CRON', false),
 		chromeLaunchConfig: {}
 	};
@@ -41,3 +43,11 @@ function env(name, defaultValue) {
 	const value = process.env[name];
 	return (typeof value === 'string' ? value : defaultValue);
 }
+
+function possibleCsvListToArray(value) {
+	if (Array.isArray(value)) {
+		return value;
+	} else if (typeof value === 'string') {
+		return value.split(',').forEach(item => item.trim());
+	}
+}

config/development.sample.json

@@ -3,6 +3,7 @@
 	"host": "0.0.0.0",
 	"port": 3000,
 	"cron": "0 30 0 * * *",
+	"runners": ["htmlcs","axe"],
 	"chromeLaunchConfig": {
 		"args": [
 			"--no-sandbox"

config/production.sample.json

@@ -2,6 +2,7 @@
 	"database": "mongodb://localhost/pa11y-webservice",
 	"host": "0.0.0.0",
 	"port": 3000,
+	"runners": ["htmlcs","axe"],
 	"cron": "0 30 0 * * *",
 	"chromeLaunchConfig": {}
 }

config/test.sample.json

@@ -2,5 +2,6 @@
 	"database": "mongodb://localhost/pa11y-webservice-test",
 	"host": "0.0.0.0",
 	"port": 3000,
+	"runners": ["htmlcs","axe"],
 	"chromeLaunchConfig": {}
 }

index.js

@@ -30,6 +30,7 @@ app(config, (error, initialisedApp) => {
 	console.log(chalk.grey('mode:     %s'), process.env.NODE_ENV);
 	console.log(chalk.grey('uri:      %s'), initialisedApp.server.info.uri);
 	console.log(chalk.grey('database: %s'), config.database);
+	console.log(chalk.grey('runners:  %s'), config.runners);
 	console.log(chalk.grey('cron:     %s'), config.cron);
 
 	if (error) {

model/task.js

@@ -191,6 +191,7 @@ module.exports = function(app, callback) {
 						wait: (task.wait || 0),
 						ignore: task.ignore,
 						actions: task.actions || [],
+						runners: possibleCsvListToArray(app.config.runners),
 						chromeLaunchConfig: app.config.chromeLaunchConfig || {},
 						headers: task.headers || {},
 						log: {
@@ -301,3 +302,12 @@ module.exports = function(app, callback) {
 		callback(errors, model);
 	});
 };
+
+function possibleCsvListToArray(value) {
+	if (Array.isArray(value)) {
+		return value;
+	} else if (typeof value === 'string') {
+		return value.split(',').forEach(item => item.trim());
+	}
+	throw new TypeError('You have passed an empty string/array to this function.  Please make sure you have specified a string or array.');
+}