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# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2025, by Samuel Williams.
require "protocol/http/header/transfer_encoding"
describe Protocol::HTTP::Header::TransferEncoding do
let(:header) {subject.parse(description)}
with "chunked" do
it "detects chunked encoding" do
expect(header).to be(:chunked?)
end
end
with "gzip" do
it "detects gzip encoding" do
expect(header).to be(:gzip?)
end
end
with "deflate" do
it "detects deflate encoding" do
expect(header).to be(:deflate?)
end
end
with "compress" do
it "detects compress encoding" do
expect(header).to be(:compress?)
end
end
with "identity" do
it "detects identity encoding" do
expect(header).to be(:identity?)
end
end
with "gzip, chunked" do
it "handles multiple encodings" do
expect(header.length).to be == 2
expect(header).to be(:include?, "gzip")
expect(header).to be(:include?, "chunked")
expect(header).to be(:gzip?)
expect(header).to be(:chunked?)
end
end
with "empty header value" do
let(:header) {subject.new}
it "handles empty transfer encoding" do
expect(header).to be(:empty?)
expect(header).not.to be(:chunked?)
end
end
with "#<<" do
let(:header) {subject.new}
it "can add encodings" do
header << "gzip"
expect(header).to be(:gzip?)
header << "chunked"
expect(header).to be(:chunked?)
end
end
with ".trailer?" do
it "should be forbidden in trailers" do
expect(subject).not.to be(:trailer?)
end
end
with ".coerce" do
it "normalizes array values to lowercase" do
header = subject.coerce(["GZIP", "CHUNKED"])
expect(header).to be(:include?, "gzip")
expect(header).to be(:include?, "chunked")
expect(header).not.to be(:include?, "GZIP")
end
it "normalizes string values to lowercase" do
header = subject.coerce("GZIP, CHUNKED")
expect(header).to be(:include?, "gzip")
expect(header).to be(:include?, "chunked")
end
end
with ".new" do
it "preserves case when given array" do
header = subject.new(["GZIP", "CHUNKED"])
expect(header).to be(:include?, "GZIP")
expect(header).to be(:include?, "CHUNKED")
end
it "normalizes when given string (backward compatibility)" do
header = subject.new("GZIP, CHUNKED")
expect(header).to be(:include?, "gzip")
expect(header).to be(:include?, "chunked")
end
it "raises ArgumentError for invalid value types" do
expect{subject.new(123)}.to raise_exception(ArgumentError)
end
end
end
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