From 7b5fd8742e6112491f61f27dcca2d8e441cc33a1 Mon Sep 17 00:00:00 2001
From: Yorick Peterse <yorickpeterse@gmail.com>
Date: Mon, 9 Nov 2015 12:36:01 +0100
Subject: Track the amount of times views are rendered

---
 spec/lib/gitlab/sherlock/transaction_spec.rb | 57 ++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

(limited to 'spec/lib/gitlab/sherlock')

diff --git a/spec/lib/gitlab/sherlock/transaction_spec.rb b/spec/lib/gitlab/sherlock/transaction_spec.rb
index bb4ff42e6e1..bb49fb65cf8 100644
--- a/spec/lib/gitlab/sherlock/transaction_spec.rb
+++ b/spec/lib/gitlab/sherlock/transaction_spec.rb
@@ -53,6 +53,16 @@ describe Gitlab::Sherlock::Transaction do
     end
   end
 
+  describe '#view_counts' do
+    it 'returns a Hash' do
+      expect(transaction.view_counts).to be_an_instance_of(Hash)
+    end
+
+    it 'sets the default value of a key to 0' do
+      expect(transaction.view_counts['cats.rb']).to be_zero
+    end
+  end
+
   describe '#run' do
     it 'runs the transaction' do
       allow(transaction).to receive(:profile_lines).and_yield
@@ -162,4 +172,51 @@ describe Gitlab::Sherlock::Transaction do
       end
     end
   end
+
+  describe '#subscribe_to_active_record' do
+    let(:subscription) { transaction.subscribe_to_active_record }
+    let(:time) { Time.now }
+    let(:query_data) { { sql: 'SELECT 1', binds: [] } }
+
+    after do
+      ActiveSupport::Notifications.unsubscribe(subscription)
+    end
+
+    it 'tracks executed queries' do
+      expect(transaction).to receive(:track_query).
+        with('SELECT 1', [], time, time)
+
+      subscription.publish('test', time, time, nil, query_data)
+    end
+
+    it 'only tracks queries triggered from the transaction thread' do
+      expect(transaction).to_not receive(:track_query)
+
+      Thread.new { subscription.publish('test', time, time, nil, query_data) }.
+        join
+    end
+  end
+
+  describe '#subscribe_to_action_view' do
+    let(:subscription) { transaction.subscribe_to_action_view }
+    let(:time) { Time.now }
+    let(:view_data) { { identifier: 'foo.rb' } }
+
+    after do
+      ActiveSupport::Notifications.unsubscribe(subscription)
+    end
+
+    it 'tracks rendered views' do
+      expect(transaction).to receive(:track_view).with('foo.rb')
+
+      subscription.publish('test', time, time, nil, view_data)
+    end
+
+    it 'only tracks views rendered from the transaction thread' do
+      expect(transaction).to_not receive(:track_view)
+
+      Thread.new { subscription.publish('test', time, time, nil, view_data) }.
+        join
+    end
+  end
 end
-- 
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