From 5726e99d92cc99b830b100f37168b2a3d5ca6309 Mon Sep 17 00:00:00 2001
From: Eric Liu <ericyl.us@gmail.com>
Date: Tue, 17 Dec 2019 09:27:57 -0800
Subject: [PATCH] test(lib): add test for cx

---
 src/lib/__tests__/cx.spec.js | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 src/lib/__tests__/cx.spec.js

diff --git a/src/lib/__tests__/cx.spec.js b/src/lib/__tests__/cx.spec.js
new file mode 100644
index 00000000..1127b04b
--- /dev/null
+++ b/src/lib/__tests__/cx.spec.js
@@ -0,0 +1,10 @@
+import { cx } from '../cx';
+
+test('cx', () => {
+  expect(cx(null)).toEqual('');
+  expect(cx(undefined)).toEqual('');
+  expect(cx('--')).toEqual('bx--');
+  expect(cx('--', null)).toEqual('bx--');
+  expect(cx(0, undefined, '--', null, 1)).toEqual('bx--');
+  expect(cx(1 && '1', 0 && '0')).toEqual('1');
+});