-with_feature :encoding do

- describe "Ruby String interpolation" do

- it "creates a String having an Encoding compatible with all components" do

- a = "\u3042"

- b = "abc".encode("ascii-8bit")

- str = "#{a} x #{b}"

- str.should == "\xe3\x81\x82\x20\x78\x20\x61\x62\x63".force_encoding("utf-8")

- str.encoding.should == Encoding::UTF_8

- end

- it "creates a String having the Encoding of the components when all are the same Encoding" do

- a = "abc".force_encoding("euc-jp")

- b = "def".force_encoding("euc-jp")

- str = '"#{a} x #{b}"'.force_encoding("euc-jp")

- result = eval(str)

- result.should == "\x61\x62\x63\x20\x78\x20\x64\x65\x66".force_encoding("euc-jp")

- result.encoding.should == Encoding::EUC_JP

- end

- it "raises an Encoding::CompatibilityError if the Encodings are not compatible" do

- a = "\u3042"

- b = "\xff".force_encoding "ascii-8bit"

- lambda { "#{a} #{b}" }.should raise_error(Encoding::CompatibilityError)

- end