From 51cbd045dab531725b448311ea52d0aec215a8f8 Mon Sep 17 00:00:00 2001
From: ysksn <bluewhale1982@gmail.com>
Date: Sat, 8 Dec 2018 00:37:56 +0900
Subject: [PATCH] Add specs for AccountTagStat model (#9452)

---
 spec/models/account_tag_stat_spec.rb | 35 +++++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/spec/models/account_tag_stat_spec.rb b/spec/models/account_tag_stat_spec.rb
index f1ebc5578..6d3057f35 100644
--- a/spec/models/account_tag_stat_spec.rb
+++ b/spec/models/account_tag_stat_spec.rb
@@ -1,5 +1,38 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe AccountTagStat, type: :model do
-  pending "add some examples to (or delete) #{__FILE__}"
+  key = 'accounts_count'
+  let(:account_tag_stat) { Fabricate(:tag).account_tag_stat }
+
+  describe '#increment_count!' do
+    it 'calls #update' do
+      args = { key => account_tag_stat.public_send(key) + 1 }
+      expect(account_tag_stat).to receive(:update).with(args)
+      account_tag_stat.increment_count!(key)
+    end
+
+    it 'increments value by 1' do
+      expect do
+        account_tag_stat.increment_count!(key)
+      end.to change { account_tag_stat.accounts_count }.by(1)
+    end
+  end
+
+  describe '#decrement_count!' do
+    it 'calls #update' do
+      args = { key => [account_tag_stat.public_send(key) - 1, 0].max }
+      expect(account_tag_stat).to receive(:update).with(args)
+      account_tag_stat.decrement_count!(key)
+    end
+
+    it 'decrements value by 1' do
+      account_tag_stat.update(key => 1)
+
+      expect do
+        account_tag_stat.decrement_count!(key)
+      end.to change { account_tag_stat.accounts_count }.by(-1)
+    end
+  end
 end