corrections, update test

Author: TheTechsTech

index.js

@@ -188,12 +188,11 @@ export const spawning = Sys.spawning = function (command, argument, progressOpti
     };
 
     let progress = progressOptions;
-    if (typeof progressOptions == 'object' && !isFunction(progressOptions)) {
+    if (typeof progressOptions == 'object' && !isFunction(progressOptions))
       options = Object.assign(options, progressOptions);
-      progress = options.onprogress || null;
-    } else if (isFunction(options.onprogress)) {
+
+    if (isFunction(options.onprogress))
       progress = options.onprogress;
-    }
 
     let err = null;
     let output = null;

test/test.js

@@ -321,6 +321,21 @@ describe('Method: `spawning`', function () {
         done();
       });
   });
+
+  it('should return on successful from `onprogress`', function (done) {
+    spawning((process.platform == 'win32' ? 'dir' : 'ls'), ['..'], null, {
+      stdio: 'pipe',
+      shell: true,
+      onprogress: (object) => {
+        expect(object.output).to.be.a('string');
+        return 'done';
+      }
+    })
+      .then(function (data) {
+        expect(data).to.equal('done');
+        done();
+      });
+  });
 });
 
 describe('Method: `where`', function () {