test: group test suites

Author: fengyuanchen

test.js

@@ -1,10 +1,12 @@
 const assert = require('assert');
 const isArrayBuffer = require('./');
 
-it('should return true if it is an ArrayBuffer', () => {
-  assert(isArrayBuffer(new ArrayBuffer()));
-});
+describe('is-array-buffer', () => {
+  it('should return true if it is an ArrayBuffer', () => {
+    assert(isArrayBuffer(new ArrayBuffer()));
+  });
 
-it('should return false if it is not an ArrayBuffer', () => {
-  assert(!isArrayBuffer([]));
+  it('should return false if it is not an ArrayBuffer', () => {
+    assert(!isArrayBuffer([]));
+  });
 });