Merge pull request #173 from github/nil-check

Add a missing nil check around cname_to_domain_to_pages?

lib/github-pages-health-check/domain.rb

@@ -245,13 +245,17 @@ def cname_to_github_user_domain?
 
       # Check if the CNAME points to a Domain that points to pages
       # e.g. CNAME -> Domain -> Pages
+      # rubocop:disable Metrics/AbcSize
       def cname_to_domain_to_pages?
+        return false unless dns?
+
         a_record_to_pages = dns.select { |d| d.type == Dnsruby::Types::A && d.name.to_s == host }.first
 
         return false unless a_record_to_pages && cname? && !cname_to_pages_dot_github_dot_com? && @www_cname
 
         CURRENT_IP_ADDRESSES.include?(a_record_to_pages.address.to_s.downcase)
       end
+      # rubocop:enable Metrics/AbcSize
 
       # Is the given domain a CNAME to pages.github.(io|com)
       # instead of being CNAME'd to the user's subdomain?

lib/github-pages-health-check/version.rb

@@ -2,6 +2,6 @@
 
 module GitHubPages
   module HealthCheck
-    VERSION = "1.18.4"
+    VERSION = "1.18.5"
   end
 end

spec/github_pages_health_check/domain_spec.rb

@@ -671,7 +671,7 @@
     end
   end
 
-  context "Protocol redirections" do
+  context "Protocol redirections", :retry => 3, :retry_wait => 1 do
     before do
       @out = []
 
@@ -724,7 +724,7 @@ def stop
       @servers.each(&:stop)
     end
 
-    it "it does not follow anything other than http/https by default", :retry => 3 do
+    it "it does not follow anything other than http/https by default" do
       Typhoeus.get(
         "http://localhost:#{@servers[1].port}",
         GitHubPages::HealthCheck.typhoeus_options
@@ -733,7 +733,7 @@ def stop
       expect(@out).to_not include("HIT #{@servers[0].port}")
     end
 
-    it "it follows ftp if requested (negative test)", :retry => 3 do
+    it "it follows ftp if requested (negative test)" do
       Typhoeus.get(
         "http://localhost:#{@servers[1].port}",
         GitHubPages::HealthCheck.typhoeus_options.merge(:redir_protocols => %i[http https ftp])