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require File.expand_path('../../../../spec_helper', __FILE__)
with_feature :encoding do
describe "Encoding::Converter.search_convpath" do
before :all do
@perms = Encoding.name_list.permutation(2).map do |pair|
Encoding::Converter.search_convpath(pair.first, pair.last) rescue []
end
end
it "returns an Array" do
Encoding::Converter.search_convpath('ASCII', 'EUC-JP').\
should be_an_instance_of(Array)
end
it "returns each encoding pair as a sub-Array" do
cp = Encoding::Converter.search_convpath('ASCII', 'EUC-JP')
cp.first.should be_an_instance_of(Array)
cp.first.size.should == 2
end
it "returns each encoding as an Encoding object" do
cp = Encoding::Converter.search_convpath('ASCII', 'EUC-JP')
cp.first.first.should be_an_instance_of(Encoding)
cp.first.last.should be_an_instance_of(Encoding)
end
it "returns multiple encoding pairs when direct conversion is impossible" do
cp = Encoding::Converter.search_convpath('ascii','Big5')
cp.size.should == 2
cp.first.should == [Encoding::US_ASCII, Encoding::UTF_8]
cp.last.should == [Encoding::UTF_8, Encoding::Big5]
end
it "sets the last element of each pair to the first element of the next" do
@perms.each do |convpath|
next if convpath.size == 1
convpath.each_with_index do |pair, idx|
break if idx == convpath.size - 1
pair.last.should == convpath[idx+1].first
end
end
end
it "only lists a source encoding once" do
@perms.each do |convpath|
next if convpath.size < 2
seen = Hash.new(false)
convpath.each_with_index do |pair, idx|
seen.key?(pair.first).should be_false if idx > 0
seen[pair.first] = true
end
end
end
it "indicates if crlf_newline conversion would occur" do
cp = Encoding::Converter.search_convpath(
"ISo-8859-1", "EUC-JP", {crlf_newline: true})
cp.last.should == "crlf_newline"
cp = Encoding::Converter.search_convpath(
"ASCII", "UTF-8", {crlf_newline: false})
cp.last.should_not == "crlf_newline"
end
it "raises an Encoding::ConverterNotFoundError if no conversion path exists" do
lambda do
Encoding::Converter.search_convpath(
Encoding::ASCII_8BIT, Encoding::Emacs_Mule)
end.should raise_error(Encoding::ConverterNotFoundError)
end
end
end
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