RUN-3179: added run-mocha-tests.js

Author: wenjunche

run-mocha-tests.js

@@ -5,7 +5,8 @@ const Mocha = require('mocha');
 
 function runMochaTests() {
     return new Promise((resolve, reject) => {
-            // https://github.com/mochajs/mocha/issues/995
+            // according to https://github.com/mochajs/mocha/issues/995
+            // "delete require.cache" is needed for running the same test multiple times
             Object.keys( require.cache ).forEach( function( file ) {
                 delete require.cache[file];
             });
@@ -18,7 +19,9 @@ function runMochaTests() {
 }
 
 // running the test multiple times
-runMochaTests()
-    .then(runMochaTests)
-    .then(runMochaTests)
-;
+let count = 20;
+let pr = runMochaTests();
+while (count > 0) {
+    pr = pr.then(runMochaTests);
+    count -= 1;
+}