don't fallback to RACK_ENV when RAILS_ENV is not present

11 files changed, 24 insertions, 79 deletions

diff --git a/railties/lib/rails.rb b/railties/lib/rails.rb
index b1f7c29b5a..5d46bbefe6 100644
--- a/railties/lib/rails.rb
+++ b/railties/lib/rails.rb
@@ -62,7 +62,7 @@ module Rails
     #   Rails.env.development? # => true
     #   Rails.env.production? # => false
     def env
-      @_env ||= ActiveSupport::StringInquirer.new(ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development")
+      @_env ||= ActiveSupport::StringInquirer.new(ENV["RAILS_ENV"] || "development")
     end
 
     # Sets the Rails environment.
diff --git a/railties/lib/rails/commands/console.rb b/railties/lib/rails/commands/console.rb
index 5d37a2b699..48b1ad884b 100644
--- a/railties/lib/rails/commands/console.rb
+++ b/railties/lib/rails/commands/console.rb
@@ -57,7 +57,7 @@ module Rails
     end
 
     def environment
-      options[:environment] ||= ENV['RAILS_ENV'] || ENV['RACK_ENV'] || 'development'
+      options[:environment] ||= ENV['RAILS_ENV'] || 'development'
     end
 
     def environment?
diff --git a/railties/lib/rails/commands/dbconsole.rb b/railties/lib/rails/commands/dbconsole.rb
index 5175e31f14..be0c0fc659 100644
--- a/railties/lib/rails/commands/dbconsole.rb
+++ b/railties/lib/rails/commands/dbconsole.rb
@@ -107,7 +107,7 @@ module Rails
       if Rails.respond_to?(:env)
         Rails.env
       else
-        ENV["RAILS_ENV"] || ENV["RACK_ENV"] || "development"
+        ENV["RAILS_ENV"] || "development"
       end
     end
 
diff --git a/railties/lib/rails/commands/runner.rb b/railties/lib/rails/commands/runner.rb
index 86bce9b2fe..66a9ebf38c 100644
--- a/railties/lib/rails/commands/runner.rb
+++ b/railties/lib/rails/commands/runner.rb
@@ -1,6 +1,6 @@
 require 'optparse'
 
-options = { environment: (ENV['RAILS_ENV'] || ENV['RACK_ENV'] || "development").dup }
+options = { environment: (ENV['RAILS_ENV'] || "development").dup }
 code_or_file = nil
 
 if ARGV.first.nil?
diff --git a/railties/lib/rails/commands/server.rb b/railties/lib/rails/commands/server.rb
index 546d3725d8..397a9cf406 100644
--- a/railties/lib/rails/commands/server.rb
+++ b/railties/lib/rails/commands/server.rb
@@ -95,7 +95,7 @@ module Rails
       super.merge({
         Port:               3000,
         DoNotReverseLookup: true,
-        environment:        (ENV['RAILS_ENV'] || ENV['RACK_ENV'] || "development").dup,
+        environment:        (ENV['RAILS_ENV'] || "development").dup,
         daemonize:          false,
         pid:                File.expand_path("tmp/pids/server.pid"),
         config:             File.expand_path("config.ru")
diff --git a/railties/test/application/rake/dbs_test.rb b/railties/test/application/rake/dbs_test.rb
index c414732f92..1da108f1e1 100644
--- a/railties/test/application/rake/dbs_test.rb
+++ b/railties/test/application/rake/dbs_test.rb
@@ -203,9 +203,7 @@ module ApplicationTests
       test 'db:setup loads schema and seeds database' do
         begin
           @old_rails_env = ENV["RAILS_ENV"]
-          @old_rack_env = ENV["RACK_ENV"]
           ENV.delete "RAILS_ENV"
-          ENV.delete "RACK_ENV"
 
           app_file 'db/schema.rb', <<-RUBY
             ActiveRecord::Schema.define(version: "1") do
@@ -225,7 +223,6 @@ module ApplicationTests
           end
         ensure
           ENV["RAILS_ENV"] = @old_rails_env
-          ENV["RACK_ENV"] = @old_rack_env
         end
       end
     end
diff --git a/railties/test/application/runner_test.rb b/railties/test/application/runner_test.rb
index 6595c40f8b..b59202e68e 100644
--- a/railties/test/application/runner_test.rb
+++ b/railties/test/application/runner_test.rb
@@ -79,11 +79,5 @@ module ApplicationTests
         assert_match "production", Dir.chdir(app_path) { `bundle exec rails runner "puts Rails.env"` }
       end
     end
-
-    def test_environment_with_rack_env
-      with_rack_env "production" do
-        assert_match "production", Dir.chdir(app_path) { `bundle exec rails runner "puts Rails.env"` }
-      end
-    end
   end
 end
diff --git a/railties/test/commands/console_test.rb b/railties/test/commands/console_test.rb
index de0cf0ba9e..d7614de9e3 100644
--- a/railties/test/commands/console_test.rb
+++ b/railties/test/commands/console_test.rb
@@ -70,13 +70,6 @@ class Rails::ConsoleTest < ActiveSupport::TestCase
     end
   end
 
-  def test_default_environment_with_rack_env
-    with_rack_env 'production' do
-      start
-      assert_match(/\sproduction\s/, output)
-    end
-  end
-
   def test_e_option
     start ['-e', 'special-production']
     assert_match(/\sspecial-production\s/, output)
diff --git a/railties/test/commands/dbconsole_test.rb b/railties/test/commands/dbconsole_test.rb
index a3cd1eb0ed..b8c7354ed0 100644
--- a/railties/test/commands/dbconsole_test.rb
+++ b/railties/test/commands/dbconsole_test.rb
@@ -82,20 +82,15 @@ class Rails::DBConsoleTest < ActiveSupport::TestCase
     assert_equal "test", Rails::DBConsole.new.environment
 
     ENV['RAILS_ENV'] = nil
-    ENV['RACK_ENV'] = nil
 
     Rails.stub(:respond_to?, false) do
       assert_equal "development", Rails::DBConsole.new.environment
 
-      ENV['RACK_ENV'] = "rack_env"
-      assert_equal "rack_env", Rails::DBConsole.new.environment
-
       ENV['RAILS_ENV'] = "rails_env"
       assert_equal "rails_env", Rails::DBConsole.new.environment
     end
   ensure
     ENV['RAILS_ENV'] = "test"
-    ENV['RACK_ENV'] = nil
   end
 
   def test_rails_env_is_development_when_argument_is_dev
diff --git a/railties/test/commands/server_test.rb b/railties/test/commands/server_test.rb
index ba688f1e9e..8427ac1bc2 100644
--- a/railties/test/commands/server_test.rb
+++ b/railties/test/commands/server_test.rb
@@ -27,61 +27,36 @@ class Rails::ServerTest < ActiveSupport::TestCase
   end
 
   def test_environment_with_rails_env
-    with_rack_env nil do
-      with_rails_env 'production' do
-        server = Rails::Server.new
-        assert_equal 'production', server.options[:environment]
-      end
+    with_rails_env 'production' do
+      server = Rails::Server.new
+      assert_equal 'production', server.options[:environment]
     end
   end
 
-  def test_environment_with_rack_env
+  def test_log_stdout
     with_rails_env nil do
-      with_rack_env 'production' do
-        server = Rails::Server.new
-        assert_equal 'production', server.options[:environment]
-      end
-    end
-  end
+      args    = []
+      options = Rails::Server::Options.new.parse!(args)
+      assert_equal true, options[:log_stdout]
 
-  def test_log_stdout
-    with_rack_env nil do
-      with_rails_env nil do
-        args    = []
-        options = Rails::Server::Options.new.parse!(args)
-        assert_equal true, options[:log_stdout]
+      args    = ["-e", "development"]
+      options = Rails::Server::Options.new.parse!(args)
+      assert_equal true, options[:log_stdout]
 
-        args    = ["-e", "development"]
+      args    = ["-e", "production"]
+      options = Rails::Server::Options.new.parse!(args)
+      assert_equal false, options[:log_stdout]
+
+      with_rails_env 'development' do
+        args    = []
         options = Rails::Server::Options.new.parse!(args)
         assert_equal true, options[:log_stdout]
+      end
 
-        args    = ["-e", "production"]
+      with_rails_env 'production' do
+        args    = []
         options = Rails::Server::Options.new.parse!(args)
         assert_equal false, options[:log_stdout]
-
-        with_rack_env 'development' do
-          args    = []
-          options = Rails::Server::Options.new.parse!(args)
-          assert_equal true, options[:log_stdout]
-        end
-
-        with_rack_env 'production' do
-          args    = []
-          options = Rails::Server::Options.new.parse!(args)
-          assert_equal false, options[:log_stdout]
-        end
-
-        with_rails_env 'development' do
-          args    = []
-          options = Rails::Server::Options.new.parse!(args)
-          assert_equal true, options[:log_stdout]
-        end
-
-        with_rails_env 'production' do
-          args    = []
-          options = Rails::Server::Options.new.parse!(args)
-          assert_equal false, options[:log_stdout]
-        end
       end
     end
   end
diff --git a/railties/test/env_helpers.rb b/railties/test/env_helpers.rb
index 330fe150ca..fea06e528f 100644
--- a/railties/test/env_helpers.rb
+++ b/railties/test/env_helpers.rb
@@ -12,15 +12,6 @@ module EnvHelpers
     end
   end
 
-  def with_rack_env(env)
-    Rails.instance_variable_set :@_env, nil
-    switch_env 'RACK_ENV', env do
-      switch_env 'RAILS_ENV', nil do
-        yield
-      end
-    end
-  end
-
   def switch_env(key, value)
     old, ENV[key] = ENV[key], value
     yield