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require_relative '../../spec_helper'
ruby_version_is ""..."4.0" do
require 'cgi'
end
ruby_version_is "4.0" do
require 'cgi/escape'
end
describe "CGI.unescapeURIComponent" do
it "decodes any percent-encoded octets to their corresponding bytes according to RFC 3986" do
string = (0x00..0xff).map { |i| "%%%02x" % i }.join
expected = (0x00..0xff).map { |i| i.chr }.join.force_encoding(Encoding::UTF_8)
CGI.unescapeURIComponent(string).should == expected
end
it "disregards case of characters in a percent-encoding triplet" do
CGI.unescapeURIComponent("%CE%B2abc").should == "βabc"
CGI.unescapeURIComponent("%ce%b2ABC").should == "βABC"
end
it "leaves any non-percent-encoded characters as-is" do
string = "ABCDEFGHIJKLMNOPQRSTUVWXYZ:/?#[]@!$&'()*+,;=\t\x0D\xFFβᛉ▒90%"
decoded = CGI.unescapeURIComponent(string)
decoded.should == string
string.should_not.equal?(decoded)
end
it "leaves sequences which can't be a percent-encoded octet as-is" do
string = "%AZ%B"
decoded = CGI.unescapeURIComponent(string)
decoded.should == string
string.should_not.equal?(decoded)
end
it "creates a String with the specified target Encoding" do
string = CGI.unescapeURIComponent("%D2%3C%3CABC", Encoding::ISO_8859_1)
string.encoding.should == Encoding::ISO_8859_1
string.should == "Ò<<ABC".encode("ISO-8859-1")
end
it "accepts a string name of an Encoding" do
CGI.unescapeURIComponent("%D2%3C%3CABC", "ISO-8859-1").should == "Ò<<ABC".encode("ISO-8859-1")
end
it "raises ArgumentError if specified encoding is unknown" do
-> { CGI.unescapeURIComponent("ABC", "ISO-JOKE-1") }.should raise_error(ArgumentError, "unknown encoding name - ISO-JOKE-1")
end
ruby_version_is ""..."4.0" do
it "uses CGI.accept_charset as the default target encoding" do
original_charset = CGI.accept_charset
CGI.accept_charset = "ISO-8859-1"
decoded = CGI.unescapeURIComponent("%D2%3C%3CABC")
decoded.should == "Ò<<ABC".encode("ISO-8859-1")
decoded.encoding.should == Encoding::ISO_8859_1
ensure
CGI.accept_charset = original_charset
end
it "has CGI.accept_charset as UTF-8 by default" do
decoded = CGI.unescapeURIComponent("%CE%B2ABC")
decoded.should == "βABC"
decoded.encoding.should == Encoding::UTF_8
end
end
ruby_version_is "4.0" do
# "cgi/escape" does not have methods to access @@accept_charset.
# Full "cgi" gem provides them, allowing to possibly change it.
it "uses CGI's @@accept_charset as the default target encoding" do
original_charset = CGI.class_variable_get(:@@accept_charset)
CGI.class_variable_set(:@@accept_charset, "ISO-8859-1")
decoded = CGI.unescapeURIComponent("%D2%3C%3CABC")
decoded.should == "Ò<<ABC".encode("ISO-8859-1")
decoded.encoding.should == Encoding::ISO_8859_1
ensure
CGI.class_variable_set(:@@accept_charset, original_charset)
end
it "has CGI's @@accept_charset as UTF-8 by default" do
decoded = CGI.unescapeURIComponent("%CE%B2ABC")
decoded.should == "βABC"
decoded.encoding.should == Encoding::UTF_8
end
end
context "when source string specifies octets invalid in target encoding" do
it "uses source string's encoding" do
string = "%A2%A6%A3".encode(Encoding::SHIFT_JIS)
decoded = CGI.unescapeURIComponent(string, Encoding::US_ASCII)
decoded.encoding.should == Encoding::SHIFT_JIS
decoded.should == "｢ｦ｣".encode(Encoding::SHIFT_JIS)
decoded.valid_encoding?.should be_true
end
it "uses source string's encoding even if it's also invalid" do
string = "%FF".encode(Encoding::US_ASCII)
decoded = CGI.unescapeURIComponent(string, Encoding::SHIFT_JIS)
decoded.encoding.should == Encoding::US_ASCII
decoded.should == "\xFF".dup.force_encoding(Encoding::US_ASCII)
decoded.valid_encoding?.should be_false
end
end
it "decodes an empty string as an empty string with target encoding" do
string = "".encode(Encoding::BINARY)
decoded = CGI.unescapeURIComponent(string, "UTF-8")
decoded.should == ""
decoded.encoding.should == Encoding::UTF_8
string.should_not.equal?(decoded)
end
it "raises a TypeError with nil" do
-> {
CGI.unescapeURIComponent(nil)
}.should raise_error(TypeError, "no implicit conversion of nil into String")
end
it "uses implicit type conversion to String" do
object = Object.new
def object.to_str
"a%20b"
end
CGI.unescapeURIComponent(object).should == "a b"
end
end
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