From 28d2b77f1967df77750093715116705e8f1f9275 Mon Sep 17 00:00:00 2001
From: MrOrz <johnsonliang7@gmail.com>
Date: Tue, 3 Oct 2017 02:27:51 +0800
Subject: [PATCH] Add simple unit tests for reducer.js

---
 util/__tests__/__snapshots__/reducer.js.snap | 14 +++++++++++++
 util/__tests__/reducer.js                    | 22 +++++++++++++++++++-
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 util/__tests__/__snapshots__/reducer.js.snap

diff --git a/util/__tests__/__snapshots__/reducer.js.snap b/util/__tests__/__snapshots__/reducer.js.snap
new file mode 100644
index 00000000..f87ba7af
--- /dev/null
+++ b/util/__tests__/__snapshots__/reducer.js.snap
@@ -0,0 +1,14 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`reducer commonSetState sets state from payload 1`] = `
+Immutable.Map {
+  "foo": "bar2",
+}
+`;
+
+exports[`reducer commonSetState sets state from payload 2`] = `
+Immutable.Map {
+  "foo": "bar",
+  "not-exist-key": "new-value",
+}
+`;
diff --git a/util/__tests__/reducer.js b/util/__tests__/reducer.js
index 5c972d26..4d667de9 100644
--- a/util/__tests__/reducer.js
+++ b/util/__tests__/reducer.js
@@ -1,5 +1,25 @@
+import { fromJS } from 'immutable';
+import { commonSetState } from '../reducer';
+
 describe('reducer', () => {
   describe('commonSetState', () => {
-    it('sets state from payload');
+    const initState = fromJS({
+      state: {
+        foo: 'bar',
+      },
+    });
+    it('sets state from payload', () => {
+      expect(
+        commonSetState(initState, {
+          payload: { key: 'foo', value: 'bar2' },
+        }).get('state')
+      ).toMatchSnapshot();
+
+      expect(
+        commonSetState(initState, {
+          payload: { key: 'not-exist-key', value: 'new-value' },
+        }).get('state')
+      ).toMatchSnapshot();
+    });
   });
 });