test: add detailed message for assertion failure

PR-URL: nodejs#16812 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]>
cjihrig · Nov 7, 2017 · d054e94 · d054e94
1 parent 6831e42
commit d054e94
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/test/addons-napi/test_typedarray/test.js b/test/addons-napi/test_typedarray/test.js
@@ -49,7 +49,9 @@ arrayTypes.forEach((currentType) => {
   const theArray = test_typedarray.CreateTypedArray(template, buffer);
 
   assert.ok(theArray instanceof currentType,
-            'Type of new array should match that of the template');
+            'Type of new array should match that of the template. ' +
+            `Expected type: ${currentType.name}, ` +
+            `actual type: ${template.constructor.name}`);
   assert.notStrictEqual(theArray, template);
   assert.strictEqual(theArray.buffer, buffer);
 });