diff --git a/test/basic_types/array.cc b/test/basic_types/array.cc
index fb0074c..6482c61 100644
--- a/test/basic_types/array.cc
+++ b/test/basic_types/array.cc
@@ -5,9 +5,9 @@ using namespace Napi;
 Value CreateArray(const CallbackInfo& info) {
   if (info.Length() > 0) {
     size_t length = info[0].As<Number>().Uint32Value();
-	  return Array::New(info.Env(), length);
+    return Array::New(info.Env(), length);
   } else {
-	  return Array::New(info.Env());
+    return Array::New(info.Env());
   }
 }
 
@@ -19,13 +19,13 @@ Value GetLength(const CallbackInfo& info) {
 Value GetElement(const CallbackInfo& info) {
   Array array = info[0].As<Array>();
   size_t index = info[1].As<Number>().Uint32Value();
-	return array[index];
+  return array[index];
 }
 
 void SetElement(const CallbackInfo& info) {
   Array array = info[0].As<Array>();
   size_t index = info[1].As<Number>().Uint32Value();
-	array[index] = info[2].As<Value>();
+  array[index] = info[2].As<Value>();
 }
 
 Object InitBasicTypesArray(Env env) {
diff --git a/test/basic_types/array.js b/test/basic_types/array.js
index 925022a..38ccba4 100644
--- a/test/basic_types/array.js
+++ b/test/basic_types/array.js
@@ -12,7 +12,7 @@ function test(binding) {
   assert.strictEqual(binding.basic_types_array.getLength(array), 0);
 
   // create array with length
-	const arrayWithLength = binding.basic_types_array.createArray(10);
+  const arrayWithLength = binding.basic_types_array.createArray(10);
   assert.strictEqual(binding.basic_types_array.getLength(arrayWithLength), 10);
 
   // set function test
diff --git a/test/testUtil.js b/test/testUtil.js
index db2d700..402c5c9 100644
--- a/test/testUtil.js
+++ b/test/testUtil.js
@@ -2,7 +2,7 @@
 // with an async delay and GC call between each.
 function runGCTests(tests, i, title) {
   if (!i) {
-     i = 0;
+    i = 0;
   }
 
   if (tests[i]) {
@@ -25,5 +25,5 @@ function runGCTests(tests, i, title) {
 }
 
 module.exports = {
-   runGCTests,
+  runGCTests,
 };
diff --git a/test/threadsafe_function/threadsafe_function_sum.cc b/test/threadsafe_function/threadsafe_function_sum.cc
index bba57dd..eac2488 100644
--- a/test/threadsafe_function/threadsafe_function_sum.cc
+++ b/test/threadsafe_function/threadsafe_function_sum.cc
@@ -28,7 +28,7 @@ void FinalizerCallback(Napi::Env env, TestData* finalizeData){
   for (size_t i = 0; i < finalizeData->threads.size(); ++i) {
     finalizeData->threads[i].join();
   }
-  finalizeData->deferred.Resolve(Boolean::New(env,true));
+  finalizeData->deferred.Resolve(Boolean::New(env, true));
   delete finalizeData;
 }