Set correct host except development environment

Currently `localhost` is used for the default host in all environments.
But up to Rails 5.0, `0.0.0.0` is used except for development.
So fixed to use the same value as 5.0.

Fixes #28184

1 files changed, 18 insertions, 0 deletions

diff --git a/railties/test/commands/server_test.rb b/railties/test/commands/server_test.rb
index 0f236ff463..d21a80982b 100644
--- a/railties/test/commands/server_test.rb
+++ b/railties/test/commands/server_test.rb
@@ -121,6 +121,24 @@ class Rails::ServerTest < ActiveSupport::TestCase
     end
   end
 
+  def test_host
+    with_rails_env "development" do
+      options = parse_arguments([])
+      assert_equal "localhost", options[:Host]
+    end
+
+    with_rails_env "production" do
+      options = parse_arguments([])
+      assert_equal "0.0.0.0", options[:Host]
+    end
+
+    with_rails_env "development" do
+      args = ["-b", "127.0.0.1"]
+      options = parse_arguments(args)
+      assert_equal "127.0.0.1", options[:Host]
+    end
+  end
+
   def test_records_user_supplied_options
     server_options = parse_arguments(["-p", 3001])
     assert_equal [:Port], server_options[:user_supplied_options]