From e963288b0b14a921686b10b5bf19081839034f81 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Thu, 27 Jul 2017 17:57:38 +0800
Subject: [PATCH] add Decr test (#666)

---
 session_update_test.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/session_update_test.go b/session_update_test.go
index d4bf437e..31391f24 100644
--- a/session_update_test.go
+++ b/session_update_test.go
@@ -571,6 +571,16 @@ func TestUpdateIncrDecr(t *testing.T) {
 	assert.True(t, has)
 	assert.EqualValues(t, 1, newCol.Cnt)
 
+	cnt, err = testEngine.Id(col1.Id).Decr(colName).Update(col1)
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, cnt)
+
+	newCol = new(UpdateIncr)
+	has, err = testEngine.Id(col1.Id).Get(newCol)
+	assert.NoError(t, err)
+	assert.True(t, has)
+	assert.EqualValues(t, 0, newCol.Cnt)
+
 	cnt, err = testEngine.Id(col1.Id).Cols(colName).Incr(colName).Update(col1)
 	assert.NoError(t, err)
 	assert.EqualValues(t, 1, cnt)