From 201a154154ca721c3f800ea38eb11247c383d796 Mon Sep 17 00:00:00 2001
From: Shannon Baffoni <shannon.baffoni@stitchfix.com>
Date: Tue, 23 Jun 2020 08:06:53 -0700
Subject: [PATCH] update tracker_time_key existance check to work with Redis
 4.2 (address deprecation warning)

---
 lib/coverband/collectors/view_tracker.rb | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/coverband/collectors/view_tracker.rb b/lib/coverband/collectors/view_tracker.rb
index 7182dfc0..919a80ed 100644
--- a/lib/coverband/collectors/view_tracker.rb
+++ b/lib/coverband/collectors/view_tracker.rb
@@ -108,7 +108,7 @@ def clear_file!(filename)
       end
 
       def report_views_tracked
-        redis_store.set(tracker_time_key, Time.now.to_i) unless @one_time_timestamp || redis_store.exists(tracker_time_key)
+        redis_store.set(tracker_time_key, Time.now.to_i) unless @one_time_timestamp || tracker_time_key_exists?
         @one_time_timestamp = true
         reported_time = Time.now.to_i
         views_to_record.each do |file|
@@ -145,6 +145,14 @@ def redis_store
         store.raw_store
       end
 
+      def tracker_time_key_exists?
+        if defined?(redis_store.exists?)
+          redis_store.exists?(tracker_time_key)
+        else
+          redis_store.exists(tracker_time_key)
+        end
+      end
+
       def tracker_key
         'render_tracker_2'
       end