Rewrite Metal tests

railties/test/application/metal_test.rb

+require 'isolation/abstract_unit'
+
+module ApplicationTests
+  class MetalTest < Test::Unit::TestCase
+    include ActiveSupport::Testing::Isolation
+
+    def setup
+      build_app
+      boot_rails
+
+      require 'rack/test'
+      extend Rack::Test::Methods
+    end
+
+    def app
+      @app ||= begin
+        require "#{app_path}/config/environment"
+        Rails.application
+      end
+    end
+
+    test "single metal endpoint" do
+      app_file 'app/metal/foo_metal.rb', <<-RUBY
+        class FooMetal
+          def self.call(env)
+            [200, { "Content-Type" => "text/html"}, ["FooMetal"]]
+          end
+        end
+      RUBY
+
+      get "/"
+      assert_equal 200, last_response.status
+      assert_equal "FooMetal", last_response.body
+    end
+
+    test "multiple metal endpoints" do
+      app_file 'app/metal/metal_a.rb', <<-RUBY
+        class MetalA
+          def self.call(env)
+            [404, { "Content-Type" => "text/html"}, ["Metal A"]]
+          end
+        end
+      RUBY
+
+      app_file 'app/metal/metal_b.rb', <<-RUBY
+        class MetalB
+          def self.call(env)
+            [200, { "Content-Type" => "text/html"}, ["Metal B"]]
+          end
+        end
+      RUBY
+
+      get "/"
+      assert_equal 200, last_response.status
+      assert_equal "Metal B", last_response.body
+    end
+
+    test "pass through to application" do
+      app_file 'app/metal/foo_metal.rb', <<-RUBY
+        class FooMetal
+          def self.call(env)
+            [404, { "Content-Type" => "text/html"}, ["Not Found"]]
+          end
+        end
+      RUBY
+
+      controller :foo, <<-RUBY
+        class FooController < ActionController::Base
+          def index
+            render :text => "foo"
+          end
+        end
+      RUBY
+
+      app_file 'config/routes.rb', <<-RUBY
+        AppTemplate::Application.routes.draw do |map|
+          match ':controller(/:action)'
+        end
+      RUBY
+
+      get "/foo"
+      assert_equal 200, last_response.status
+      assert_equal "foo", last_response.body
+    end
+  end
+end

railties/test/fixtures/metal/multiplemetals/app/metal/metal_a.rb

-class MetalA
-  def self.call(env)
-    [404, { "Content-Type" => "text/html"}, ["Metal A"]]
-  end
-end

railties/test/fixtures/metal/multiplemetals/app/metal/metal_b.rb

-class MetalB
-  def self.call(env)
-    [200, { "Content-Type" => "text/html"}, ["Metal B"]]
-  end
-end

railties/test/fixtures/metal/pluralmetal/app/metal/legacy_routes.rb

-class LegacyRoutes < Rails::Rack::Metal
-  def self.call(env)
-    [301, { "Location" => "http://example.com"}, []]
-  end
-end

railties/test/fixtures/metal/singlemetal/app/metal/foo_metal.rb

-class FooMetal < Rails::Rack::Metal
-  def self.call(env)
-    [200, { "Content-Type" => "text/html"}, ["Hi"]]
-  end
-end

railties/test/fixtures/metal/subfolders/app/metal/Folder/metal_a.rb

-module Folder
-  class MetalA < Rails::Rack::Metal
-    def self.call(env)
-      [200, { "Content-Type" => "text/html"}, ["Hi"]]
-    end
-  end
-end

railties/test/fixtures/metal/subfolders/app/metal/Folder/metal_b.rb

-module Folder
-  class MetalB < Rails::Rack::Metal
-    def self.call(env)
-      [200, { "Content-Type" => "text/html"}, ["Hi"]]
-    end
-  end
-end

railties/test/metal_test.rb

-require 'abstract_unit'
-
-class MetalTest < Test::Unit::TestCase
-  def test_metals_should_return_list_of_found_metal_apps
-    use_appdir("singlemetal") do
-      assert_equal(["FooMetal"], found_metals_as_string_array)
-    end
-  end
-
-  def test_metals_should_respect_class_name_conventions
-    use_appdir("pluralmetal") do
-      assert_equal(["LegacyRoutes"], found_metals_as_string_array)
-    end
-  end
-
-  def test_metals_should_return_alphabetical_list_of_found_metal_apps
-    use_appdir("multiplemetals") do
-      assert_equal(["MetalA", "MetalB"], found_metals_as_string_array)
-    end
-  end
-
-  def test_metals_load_order_should_be_overriden_by_requested_metals
-    use_appdir("multiplemetals") do
-      Rails::Rack::Metal.requested_metals = ["MetalB", "MetalA"]
-      assert_equal(["MetalB", "MetalA"], found_metals_as_string_array)
-    end
-  end
-
-  def test_metals_not_listed_should_not_load
-    use_appdir("multiplemetals") do
-      Rails::Rack::Metal.requested_metals = ["MetalB"]
-      assert_equal(["MetalB"], found_metals_as_string_array)
-    end
-  end
-
-  def test_metal_finding_should_work_with_subfolders
-    use_appdir("subfolders") do
-      assert_equal(["Folder::MetalA", "Folder::MetalB"], found_metals_as_string_array)
-    end
-  end
-
-  def test_metal_finding_with_requested_metals_should_work_with_subfolders
-    use_appdir("subfolders") do
-      Rails::Rack::Metal.requested_metals = ["Folder::MetalB"]
-      assert_equal(["Folder::MetalB"], found_metals_as_string_array)
-    end
-  end
-
-  def test_metal_finding_should_work_with_multiple_metal_paths_in_185_and_below
-    use_appdir("singlemetal") do
-      engine_metal_path = "#{File.dirname(__FILE__)}/fixtures/plugins/engines/engine/app/metal" 
-      Rails::Rack::Metal.metal_paths << engine_metal_path
-      $LOAD_PATH << engine_metal_path
-      assert_equal(["FooMetal", "EngineMetal"], found_metals_as_string_array)
-    end
-  end
-  
-  def test_metal_default_pass_through_on_404
-    use_appdir("multiplemetals") do
-      result = Rails::Rack::Metal.new(app).call({})
-      assert_equal 200, result.first
-      assert_equal ["Metal B"], result.last
-    end
-  end
-  
-  def test_metal_pass_through_on_417
-    use_appdir("multiplemetals") do
-      Rails::Rack::Metal.pass_through_on = 417
-      result = Rails::Rack::Metal.new(app).call({})
-      assert_equal 404, result.first
-      assert_equal ["Metal A"], result.last
-    end
-  end
-  
-  def test_metal_pass_through_on_404_and_200
-    use_appdir("multiplemetals") do
-      Rails::Rack::Metal.pass_through_on = [404, 200]
-      result = Rails::Rack::Metal.new(app).call({})
-      assert_equal 402, result.first
-      assert_equal ["End of the Line"], result.last
-    end
-  end
-
-  private
-  
-  def app
-    lambda{|env|[402,{},["End of the Line"]]}
-  end
-
-  def use_appdir(root)
-    dir = "#{File.dirname(__FILE__)}/fixtures/metal/#{root}"
-    Rails::Rack::Metal.metal_paths = ["#{dir}/app/metal"]
-    Rails::Rack::Metal.requested_metals = nil
-    $LOAD_PATH << "#{dir}/app/metal"
-    yield
-  end
-
-  def found_metals_as_string_array
-    Rails::Rack::Metal.metals.map { |m| m.to_s }
-  end
-end