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# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2023-2024, by Samuel Williams.
require "protocol/http2/settings_frame"
describe Protocol::HTTP2::Settings do
let(:settings) {subject.new}
with "#enable_push" do
it "is enabled by default" do
expect(settings.enable_push).to be == 1
expect(settings).to be(:enable_push?)
end
it "can be disabled" do
settings.enable_push = 0
expect(settings.enable_push).to be == 0
expect(settings).not.to be(:enable_push?)
end
it "only accepts valid values" do
expect{settings.enable_push = 2}.to raise_exception(Protocol::HTTP2::ProtocolError)
end
end
with "#initial_window_size" do
it "is 65535 by default" do
expect(settings.initial_window_size).to be == 0xFFFF
end
it "can be updated" do
settings.initial_window_size = 1000
expect(settings.initial_window_size).to be == 1000
end
it "only accepts valid values" do
expect{settings.initial_window_size = (Protocol::HTTP2::MAXIMUM_ALLOWED_WINDOW_SIZE + 1)}.to raise_exception(Protocol::HTTP2::ProtocolError)
end
end
with "#maximum_frame_size" do
it "is 16384 by default" do
expect(settings.maximum_frame_size).to be == 0x4000
end
it "can be updated" do
settings.maximum_frame_size = 20000
expect(settings.maximum_frame_size).to be == 20000
end
it "only accepts valid values" do
expect{settings.maximum_frame_size = (Protocol::HTTP2::MAXIMUM_ALLOWED_FRAME_SIZE + 1)}.to raise_exception(Protocol::HTTP2::ProtocolError)
expect{settings.maximum_frame_size = (Protocol::HTTP2::MINIMUM_ALLOWED_FRAME_SIZE - 1)}.to raise_exception(Protocol::HTTP2::ProtocolError)
end
end
with "#enable_connect_protocol" do
it "is disabled by default" do
expect(settings.enable_connect_protocol).to be == 0
expect(settings).not.to be(:enable_connect_protocol?)
end
it "can be enabled" do
settings.enable_connect_protocol = 1
expect(settings.enable_connect_protocol).to be == 1
expect(settings).to be(:enable_connect_protocol?)
end
it "only accepts valid values" do
expect{settings.enable_connect_protocol = 2}.to raise_exception(Protocol::HTTP2::ProtocolError)
end
end
with "#no_rfc7540_priorities" do
it "is disabled by default" do
expect(settings.no_rfc7540_priorities).to be == 0
expect(settings).not.to be(:no_rfc7540_priorities?)
end
it "can be enabled" do
settings.no_rfc7540_priorities = 1
expect(settings.no_rfc7540_priorities).to be == 1
expect(settings).to be(:no_rfc7540_priorities?)
end
it "only accepts valid values" do
expect{settings.no_rfc7540_priorities = 2}.to raise_exception(Protocol::HTTP2::ProtocolError)
end
end
it "has the expected defaults" do
expect(settings).to have_attributes(
header_table_size: be == 4096,
enable_push: be == 1,
maximum_concurrent_streams: be == 0xFFFFFFFF,
initial_window_size: be == 0xFFFF,
maximum_frame_size: be == 0x4000,
maximum_header_list_size: be == 0xFFFFFFFF,
enable_connect_protocol: be == 0,
no_rfc7540_priorities: be == 0,
)
end
it "can be updated" do
settings.update({
Protocol::HTTP2::Settings::HEADER_TABLE_SIZE => 100,
Protocol::HTTP2::Settings::ENABLE_PUSH => 0,
Protocol::HTTP2::Settings::MAXIMUM_CONCURRENT_STREAMS => 10,
Protocol::HTTP2::Settings::INITIAL_WINDOW_SIZE => 1000,
Protocol::HTTP2::Settings::MAXIMUM_FRAME_SIZE => 20000,
Protocol::HTTP2::Settings::MAXIMUM_HEADER_LIST_SIZE => 100000,
Protocol::HTTP2::Settings::ENABLE_CONNECT_PROTOCOL => 1
})
expect(settings).to have_attributes(
header_table_size: be == 100,
enable_push: be == 0,
maximum_concurrent_streams: be == 10,
initial_window_size: be == 1000,
maximum_frame_size: be == 20000,
maximum_header_list_size: be == 100000,
enable_connect_protocol: be == 1
)
end
end
describe Protocol::HTTP2::PendingSettings do
let(:pending_settings) {subject.new}
it "has the expected defaults" do
expect(pending_settings).to have_attributes(
header_table_size: be == 4096,
enable_push: be == 1,
maximum_concurrent_streams: be == 0xFFFFFFFF,
initial_window_size: be == 0xFFFF,
maximum_frame_size: be == 0x4000,
maximum_header_list_size: be == 0xFFFFFFFF,
enable_connect_protocol: be == 0
)
end
it "can append changes" do
pending_settings.append([
[Protocol::HTTP2::Settings::HEADER_TABLE_SIZE, 100],
[Protocol::HTTP2::Settings::ENABLE_PUSH, 0],
])
expect(pending_settings).to have_attributes(
header_table_size: be == 4096,
enable_push: be == 1
)
pending_settings.acknowledge
expect(pending_settings).to have_attributes(
header_table_size: be == 100,
enable_push: be == 0
)
end
it "can't acknowledge changes that haven't been appended" do
expect{pending_settings.acknowledge}.to raise_exception(Protocol::HTTP2::ProtocolError)
end
it "can't acknowledge changes that have already been acknowledged" do
pending_settings.append([
[Protocol::HTTP2::Settings::HEADER_TABLE_SIZE, 100],
[Protocol::HTTP2::Settings::ENABLE_PUSH, 0],
])
pending_settings.acknowledge
expect{pending_settings.acknowledge}.to raise_exception(Protocol::HTTP2::ProtocolError)
end
end
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