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# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2023-2025, by Samuel Williams.
require "protocol/http/body/completable"
require "protocol/http/body/buffered"
require "protocol/http/request"
describe Protocol::HTTP::Body::Completable do
let(:body) {Protocol::HTTP::Body::Buffered.new}
let(:callback) {Proc.new{}}
let(:completable) {subject.new(body, callback)}
it "can trigger callback when finished reading" do
expect(callback).to receive(:call)
expect(completable.read).to be_nil
completable.close
end
AnImmediateCallback = Sus::Shared("an immediate callback") do
it "invokes block immediately" do
invoked = false
wrapped = subject.wrap(message) do
invoked = true
end
expect(invoked).to be == true
expect(message.body).to be_equal(body)
end
end
ADeferredCallback = Sus::Shared("a deferred callback") do
it "invokes block when body is finished reading" do
invoked = false
wrapped = subject.wrap(message) do
invoked = true
end
expect(invoked).to be == false
expect(message.body).to be_equal(wrapped)
wrapped.join
expect(invoked).to be == true
end
end
with ".wrap" do
let(:message) {Protocol::HTTP::Request.new(nil, nil, "GET", "/", nil, Protocol::HTTP::Headers.new, body)}
with "empty body" do
it_behaves_like AnImmediateCallback
end
with "nil body" do
let(:body) {nil}
it_behaves_like AnImmediateCallback
end
with "non-empty body" do
let(:body) {Protocol::HTTP::Body::Buffered.wrap("Hello World")}
it_behaves_like ADeferredCallback
end
end
with "#finish" do
it "invokes callback once" do
expect(callback).to receive(:call)
2.times do
completable.finish
end
end
it "doesn't break #read after finishing" do
completable.finish
expect(completable.read).to be_nil
end
end
with "#rewindable?" do
it "is not rewindable" do
# Because completion can only happen once, we can't rewind the body.
expect(body).to be(:rewindable?)
expect(completable).not.to be(:rewindable?)
expect(completable.rewind).to be == false
end
end
with "#close" do
let(:events) {Array.new}
let(:callback) {Proc.new{events << :close}}
it "invokes callback once" do
completable1 = subject.new(body, proc{events << :close1})
completable2 = subject.new(completable1, proc{events << :close2})
completable2.close
expect(events).to be == [:close2, :close1]
end
end
with "#as_json" do
it "includes callback information" do
completable = subject.new(body, proc{events << :close})
expect(completable.as_json).to have_keys(
class: be == "Protocol::HTTP::Body::Completable",
callback: be =~ /Proc/
)
end
it "shows nil when no callback" do
completable = subject.new(body, nil)
expect(completable.as_json).to have_keys(
class: be == "Protocol::HTTP::Body::Completable",
callback: be == nil
)
end
end
end
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