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# frozen_string_literal: true
# Released under the MIT License.
# Copyright, 2025, by Samuel Williams.
require "protocol/http/header/accept_charset"
describe Protocol::HTTP::Header::AcceptCharset::Charset do
it "should have default quality_factor of 1.0" do
charset = subject.new("utf-8", nil)
expect(charset.quality_factor).to be == 1.0
end
end
describe Protocol::HTTP::Header::AcceptCharset do
let(:header) {subject.parse(description)}
let(:charsets) {header.charsets.sort}
with "utf-8, iso-8859-1;q=0.5, windows-1252;q=0.25" do
it "can parse charsets" do
expect(header.length).to be == 3
expect(charsets[0].name).to be == "utf-8"
expect(charsets[0].quality_factor).to be == 1.0
expect(charsets[1].name).to be == "iso-8859-1"
expect(charsets[1].quality_factor).to be == 0.5
expect(charsets[2].name).to be == "windows-1252"
expect(charsets[2].quality_factor).to be == 0.25
end
end
with "windows-1252;q=0.25, iso-8859-1;q=0.5, utf-8" do
it "should order based on quality factor" do
expect(charsets.collect(&:name)).to be == %w{utf-8 iso-8859-1 windows-1252}
end
end
with "us-ascii,iso-8859-1;q=0.8,windows-1252;q=0.6,utf-8" do
it "should order based on quality factor" do
expect(charsets.collect(&:name)).to be == %w{us-ascii utf-8 iso-8859-1 windows-1252}
end
end
with "*;q=0" do
it "should accept wildcard charset" do
expect(charsets[0].name).to be == "*"
expect(charsets[0].quality_factor).to be == 0
end
end
with "utf-8, iso-8859-1;q=0.5, windows-1252;q=0.5" do
it "should preserve relative order" do
expect(charsets[0].name).to be == "utf-8"
expect(charsets[1].name).to be == "iso-8859-1"
expect(charsets[2].name).to be == "windows-1252"
end
end
it "should not accept invalid input" do
bad_values = [
# Invalid quality factor:
"utf-8;f=1",
# Invalid parameter:
"us-ascii;utf-8",
# Invalid use of separator:
";",
# Empty charset (we ignore this one):
# ","
]
bad_values.each do |value|
expect{subject.parse(value).charsets}.to raise_exception(subject::ParseError)
end
end
end
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