require 'abstract_unit'
class ExecutorTest < ActiveSupport::TestCase
class MyBody < Array
def initialize(&block)
@on_close = block
end
def foo
"foo"
end
def bar
"bar"
end
def close
@on_close.call if @on_close
end
end
def test_returned_body_object_always_responds_to_close
body = call_and_return_body
assert_respond_to body, :close
end
def test_returned_body_object_always_responds_to_close_even_if_called_twice
body = call_and_return_body
assert_respond_to body, :close
body.close
body = call_and_return_body
assert_respond_to body, :close
body.close
end
def test_returned_body_object_behaves_like_underlying_object
body = call_and_return_body do
b = MyBody.new
b << "hello"
b << "world"
[200, { "Content-Type" => "text/html" }, b]
end
assert_equal 2, body.size
assert_equal "hello", body[0]
assert_equal "world", body[1]
assert_equal "foo", body.foo
assert_equal "bar", body.bar
end
def test_it_calls_close_on_underlying_object_when_close_is_called_on_body
close_called = false
body = call_and_return_body do
b = MyBody.new do
close_called = true
end
[200, { "Content-Type" => "text/html" }, b]
end
body.close
assert close_called
end
def test_returned_body_object_responds_to_all_methods_supported_by_underlying_object
body = call_and_return_body do
[200, { "Content-Type" => "text/html" }, MyBody.new]
end
assert_respond_to body, :size
assert_respond_to body, :each
assert_respond_to body, :foo
assert_respond_to body, :bar
end
def test_run_callbacks_are_called_before_close
running = false
executor.to_run { running = true }
body = call_and_return_body
assert running
running = false
body.close
assert !running
end
def test_complete_callbacks_are_called_on_close
completed = false
executor.to_complete { completed = true }
body = call_and_return_body
assert !completed
body.close
assert completed
end
def test_complete_callbacks_are_called_on_exceptions
completed = false
executor.to_complete { completed = true }
begin
call_and_return_body do
raise "error"
end
rescue
end
assert completed
end
def test_callbacks_execute_in_shared_context
result = false
executor.to_run { @in_shared_context = true }
executor.to_complete { result = @in_shared_context }
call_and_return_body.close
assert result
assert !defined?(@in_shared_context) # it's not in the test itself
end
private
def call_and_return_body(&block)
app = middleware(block || proc { [200, {}, 'response'] })
_, _, body = app.call({'rack.input' => StringIO.new('')})
body
end
def middleware(inner_app)
ActionDispatch::Executor.new(inner_app, executor)
end
def executor
@executor ||= Class.new(ActiveSupport::Executor)
end
end
