test: add path to nodeJs when running test:bin

- this allows the test to be run in a debugger
  without the complete PATH

tasks/test-bin.js

@@ -1,6 +1,7 @@
 const childProcess = require('child_process');
 const fs = require('fs');
 const os = require('os');
+const path = require('path');
 
 const chai = require('chai');
 chai.use(require('chai-diff'));
@@ -37,7 +38,13 @@ function executeBinHandlebars(...args) {
 }
 
 function execFilesSyncUtf8(command, args) {
-  return childProcess.execFileSync(command, args, { encoding: 'utf-8' });
+  const env = process.env;
+  env.PATH = addPathToNodeJs(env.PATH);
+  return childProcess.execFileSync(command, args, { encoding: 'utf-8', env });
+}
+
+function addPathToNodeJs(pathEnvironment) {
+  return path.dirname(process.argv0) + path.delimiter + pathEnvironment;
 }
 
 function normalizeCrlf(string) {