From 73a200701f244493a27bb7fecfe03a62ca9c3619 Mon Sep 17 00:00:00 2001
From: Adrian Estrada <edsadr@gmail.com>
Date: Sun, 8 Jan 2017 22:36:59 -0500
Subject: [PATCH] test: improve test stream transform constructor

* new test for the error when a transform function is not specified
* use let instead of var
* use assert.strictEqual instead of assert.equal
* use arrow functions
---
 ...test-stream-transform-constructor-set-methods.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/test/parallel/test-stream-transform-constructor-set-methods.js b/test/parallel/test-stream-transform-constructor-set-methods.js
index 02ef9f55cb4460..1423f4de10942d 100644
--- a/test/parallel/test-stream-transform-constructor-set-methods.js
+++ b/test/parallel/test-stream-transform-constructor-set-methods.js
@@ -21,12 +21,19 @@ const t = new Transform({
   flush: _flush
 });
 
+const t2 = new Transform({});
+
 t.end(Buffer.from('blerg'));
 t.resume();
 
-process.on('exit', function() {
+assert.throws(() => {
+  t2.end(Buffer.from('blerg'));
+}, /^Error: _transform\(\) is not implemented$/);
+
+
+process.on('exit', () => {
   assert.strictEqual(t._transform, _transform);
   assert.strictEqual(t._flush, _flush);
-  assert(_transformCalled);
-  assert(_flushCalled);
+  assert.strictEqual(_transformCalled, true);
+  assert.strictEqual(_flushCalled, true);
 });