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# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
describe "Regexp#encoding" do
it "returns an Encoding object" do
/glar/.encoding.should be_an_instance_of(Encoding)
end
it "defaults to US-ASCII if the Regexp contains only US-ASCII character" do
/ASCII/.encoding.should == Encoding::US_ASCII
end
it "returns US_ASCII if the 'n' modifier is supplied and only US-ASCII characters are present" do
/ASCII/n.encoding.should == Encoding::US_ASCII
end
it "returns ASCII-8BIT if the 'n' modifier is supplied and non-US-ASCII characters are present" do
/#{}\xc2\xa1/n.encoding.should == Encoding::ASCII_8BIT
end
it "defaults to UTF-8 if \\u escapes appear" do
/\u{9879}/.encoding.should == Encoding::UTF_8
end
it "defaults to UTF-8 if a literal UTF-8 character appears" do
/¥/.encoding.should == Encoding::UTF_8
end
it "returns UTF-8 if the 'u' modifier is supplied" do
/ASCII/u.encoding.should == Encoding::UTF_8
end
it "returns Windows-31J if the 's' modifier is supplied" do
/ASCII/s.encoding.should == Encoding::Windows_31J
end
it "returns EUC_JP if the 'e' modifier is supplied" do
/ASCII/e.encoding.should == Encoding::EUC_JP
end
it "upgrades the encoding to that of an embedded String" do
str = "文字化け".encode('euc-jp')
/#{str}/.encoding.should == Encoding::EUC_JP
end
it "ignores the encoding and uses US-ASCII if the string has only ASCII characters" do
str = "abc".encode('euc-jp')
str.encoding.should == Encoding::EUC_JP
/#{str}/.encoding.should == Encoding::US_ASCII
end
it "ignores the default_internal encoding" do
old_internal = Encoding.default_internal
Encoding.default_internal = Encoding::EUC_JP
/foo/.encoding.should_not == Encoding::EUC_JP
Encoding.default_internal = old_internal
end
end
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