From 6e3b2cc860aff636460decd9e153dbb87f057065 Mon Sep 17 00:00:00 2001
From: Sam <sam.saffron@gmail.com>
Date: Wed, 19 Jul 2017 12:04:03 -0400
Subject: [PATCH] warmup prior to running tests

---
 lib/tasks/qunit.rake | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/tasks/qunit.rake b/lib/tasks/qunit.rake
index 9baf48a1af8..230022a2903 100644
--- a/lib/tasks/qunit.rake
+++ b/lib/tasks/qunit.rake
@@ -51,6 +51,25 @@ task "qunit:test", [:timeout] => :environment do |_, args|
       cmd += " #{args[:timeout]}"
     end
 
+    @now = Time.now
+    def elapsed
+      Time.now - @now
+    end
+
+    # wait for server to accept connections
+    require 'net/http'
+    uri = URI("http://localhost:#{port}/assets/test_helper.js")
+    puts "Warming up Rails server"
+    begin
+      Net::HTTP.get(uri)
+    rescue Errno::ECONNREFUSED
+      sleep 1
+      retry unless elapsed() > 60
+      puts "Timed out. Can no connect to forked server!"
+      exit 1
+    end
+    puts "Rails server is warmed up"
+
     # wait for server to respond, will exception out on failure
     tries = 0
     begin