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require "abstract_unit"
module RenderStreaming
class BasicController < ActionController::Base
self.view_paths = [ActionView::FixtureResolver.new(
"render_streaming/basic/hello_world.html.erb" => "Hello world",
"render_streaming/basic/boom.html.erb" => "<%= raise 'Ruby was here!' %>",
"layouts/application.html.erb" => "<%= yield %>, I'm here!",
"layouts/boom.html.erb" => "<body class=\"<%= nil.invalid! %>\"<%= yield %></body>"
)]
layout "application"
def hello_world
render stream: true
end
def layout_exception
render action: "hello_world", stream: true, layout: "boom"
end
def template_exception
render action: "boom", stream: true
end
def skip
render action: "hello_world", stream: false
end
def explicit
render action: "hello_world", stream: true
end
def no_layout
render action: "hello_world", stream: true, layout: false
end
def explicit_cache
headers["Cache-Control"] = "private"
render action: "hello_world", stream: true
end
end
class StreamingTest < Rack::TestCase
test "rendering with streaming enabled at the class level" do
get "/render_streaming/basic/hello_world"
assert_body "b\r\nHello world\r\nb\r\n, I'm here!\r\n0\r\n\r\n"
assert_streaming!
end
test "rendering with streaming given to render" do
get "/render_streaming/basic/explicit"
assert_body "b\r\nHello world\r\nb\r\n, I'm here!\r\n0\r\n\r\n"
assert_streaming!
end
test "rendering with streaming do not override explicit cache control given to render" do
get "/render_streaming/basic/explicit_cache"
assert_body "b\r\nHello world\r\nb\r\n, I'm here!\r\n0\r\n\r\n"
assert_streaming! "private"
end
test "rendering with streaming no layout" do
get "/render_streaming/basic/no_layout"
assert_body "b\r\nHello world\r\n0\r\n\r\n"
assert_streaming!
end
test "skip rendering with streaming at render level" do
get "/render_streaming/basic/skip"
assert_body "Hello world, I'm here!"
end
test "rendering with layout exception" do
get "/render_streaming/basic/layout_exception"
assert_body "d\r\n<body class=\"\r\n37\r\n\"><script>window.location = \"/500.html\"</script></html>\r\n0\r\n\r\n"
assert_streaming!
end
test "rendering with template exception" do
get "/render_streaming/basic/template_exception"
assert_body "37\r\n\"><script>window.location = \"/500.html\"</script></html>\r\n0\r\n\r\n"
assert_streaming!
end
test "rendering with template exception logs the exception" do
io = StringIO.new
_old, ActionView::Base.logger = ActionView::Base.logger, ActiveSupport::Logger.new(io)
begin
get "/render_streaming/basic/template_exception"
io.rewind
assert_match "Ruby was here!", io.read
ensure
ActionView::Base.logger = _old
end
end
test "do not stream on HTTP/1.0" do
get "/render_streaming/basic/hello_world", headers: { "HTTP_VERSION" => "HTTP/1.0" }
assert_body "Hello world, I'm here!"
assert_status 200
assert_equal "22", headers["Content-Length"]
assert_nil headers["Transfer-Encoding"]
end
def assert_streaming!(cache = "no-cache")
assert_status 200
assert_nil headers["Content-Length"]
assert_equal "chunked", headers["Transfer-Encoding"]
assert_equal cache, headers["Cache-Control"]
end
end
end
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