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# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2019-2024, by Samuel Williams.
require "protocol/http2/settings_frame"
require "protocol/http2/a_frame"
describe Protocol::HTTP2::SettingsFrame do
let(:settings) {[
[3, 10], [5, 1048576], [4, 2147483647], [8, 1]
]}
let(:frame) {subject.new}
it_behaves_like Protocol::HTTP2::AFrame do
def before
frame.pack settings
super
end
end
it "applies to the connection" do
expect(frame).to be(:connection?)
end
with "#pack" do
it "packs settings" do
frame.pack settings
expect(frame.length).to be == 6*settings.size
end
end
with "#unpack" do
it "unpacks settings" do
frame.pack settings
expect(frame.unpack).to be == settings
end
it "can generate acknowledgment" do
frame.pack settings
acknowledgement_frame = frame.acknowledge
expect(acknowledgement_frame).to be_a(Protocol::HTTP2::SettingsFrame)
expect(acknowledgement_frame).to be(:acknowledgement?)
expect(acknowledgement_frame.length).to be == 0
settings = acknowledgement_frame.unpack
expect(settings).to be == []
end
it "can unpack empty settings" do
end
end
with "#read_payload" do
let(:stream) {StringIO.new([0, 0, 0, 0, 0, 0].pack("C*"))}
with "invalid stream id" do
it "raises an error" do
frame.stream_id = 1
frame.length = 0
expect{frame.read_payload(stream)}.to raise_exception(
Protocol::HTTP2::ProtocolError,
message: be =~ /Settings apply to connection only, but stream_id was given/
)
end
end
with "non-zero length acknowledgement" do
it "raises an error" do
frame.acknowledgement!
frame.stream_id = 0
frame.length = 6
expect{frame.read_payload(stream)}.to raise_exception(
Protocol::HTTP2::ProtocolError,
message: be =~ /Settings acknowledgement must not contain payload/
)
end
end
with "invalid length modulo 6" do
it "raises an error" do
frame.stream_id = 0
frame.length = 5
expect{frame.read_payload(stream)}.to raise_exception(
Protocol::HTTP2::ProtocolError,
message: be =~ /Invalid frame length/
)
end
end
end
end
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