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Diffstat (limited to 'spec/rubyspec/core/encoding/compatible_spec.rb')
| -rw-r--r-- | spec/rubyspec/core/encoding/compatible_spec.rb | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/spec/rubyspec/core/encoding/compatible_spec.rb b/spec/rubyspec/core/encoding/compatible_spec.rb new file mode 100644 index 0000000000..55e3d0fb4d --- /dev/null +++ b/spec/rubyspec/core/encoding/compatible_spec.rb @@ -0,0 +1,381 @@ +# -*- encoding: ascii-8bit -*- + +require File.expand_path('../../../spec_helper', __FILE__) + +with_feature :encoding do + # TODO: add IO + + describe "Encoding.compatible? String, String" do + describe "when the first's Encoding is valid US-ASCII" do + before :each do + @str = "abc".force_encoding Encoding::US_ASCII + end + + it "returns US-ASCII when the second's is US-ASCII" do + Encoding.compatible?(@str, "def".encode("us-ascii")).should == Encoding::US_ASCII + end + + it "returns US-ASCII if the second String is ASCII-8BIT and ASCII only" do + Encoding.compatible?(@str, "\x7f").should == Encoding::US_ASCII + end + + it "returns ASCII-8BIT if the second String is ASCII-8BIT but not ASCII only" do + Encoding.compatible?(@str, "\xff").should == Encoding::ASCII_8BIT + end + + it "returns US-ASCII if the second String is UTF-8 and ASCII only" do + Encoding.compatible?(@str, "\x7f".encode("utf-8")).should == Encoding::US_ASCII + end + + it "returns UTF-8 if the second String is UTF-8 but not ASCII only" do + Encoding.compatible?(@str, "\u3042".encode("utf-8")).should == Encoding::UTF_8 + end + end + + describe "when the first's Encoding is ASCII compatible and ASCII only" do + it "returns the first's Encoding if the second is ASCII compatible and ASCII only" do + [ [Encoding, "abc".force_encoding("UTF-8"), "123".force_encoding("Shift_JIS"), Encoding::UTF_8], + [Encoding, "123".force_encoding("Shift_JIS"), "abc".force_encoding("UTF-8"), Encoding::Shift_JIS] + ].should be_computed_by(:compatible?) + end + + it "returns the first's Encoding if the second is ASCII compatible and ASCII only" do + [ [Encoding, "abc".force_encoding("ASCII-8BIT"), "123".force_encoding("US-ASCII"), Encoding::ASCII_8BIT], + [Encoding, "123".force_encoding("US-ASCII"), "abc".force_encoding("ASCII-8BIT"), Encoding::US_ASCII] + ].should be_computed_by(:compatible?) + end + + it "returns the second's Encoding if the second is ASCII compatible but not ASCII only" do + [ [Encoding, "abc".force_encoding("UTF-8"), "\xff".force_encoding("Shift_JIS"), Encoding::Shift_JIS], + [Encoding, "123".force_encoding("Shift_JIS"), "\xff".force_encoding("UTF-8"), Encoding::UTF_8], + [Encoding, "abc".force_encoding("ASCII-8BIT"), "\xff".force_encoding("US-ASCII"), Encoding::US_ASCII], + [Encoding, "123".force_encoding("US-ASCII"), "\xff".force_encoding("ASCII-8BIT"), Encoding::ASCII_8BIT], + ].should be_computed_by(:compatible?) + end + + it "returns nil if the second's Encoding is not ASCII compatible" do + a = "abc".force_encoding("UTF-8") + b = "123".force_encoding("UTF-16LE") + Encoding.compatible?(a, b).should be_nil + end + end + + describe "when the first's Encoding is ASCII compatible but not ASCII only" do + it "returns the first's Encoding if the second's is valid US-ASCII" do + Encoding.compatible?("\xff", "def".encode("us-ascii")).should == Encoding::ASCII_8BIT + end + + it "returns the first's Encoding if the second's is UTF-8 and ASCII only" do + Encoding.compatible?("\xff", "\u{7f}".encode("utf-8")).should == Encoding::ASCII_8BIT + end + + it "returns nil if the second encoding is ASCII compatible but neither String's encoding is ASCII only" do + Encoding.compatible?("\xff", "\u3042".encode("utf-8")).should be_nil + end + end + + describe "when the first's Encoding is not ASCII compatible" do + before :each do + @str = "abc".force_encoding Encoding::UTF_7 + end + + it "returns nil when the second String is US-ASCII" do + Encoding.compatible?(@str, "def".encode("us-ascii")).should be_nil + end + + it "returns nil when the second String is ASCII-8BIT and ASCII only" do + Encoding.compatible?(@str, "\x7f").should be_nil + end + + it "returns nil when the second String is ASCII-8BIT but not ASCII only" do + Encoding.compatible?(@str, "\xff").should be_nil + end + + it "returns the Encoding when the second's Encoding is not ASCII compatible but the same as the first's Encoding" do + encoding = Encoding.compatible?(@str, "def".force_encoding("utf-7")) + encoding.should == Encoding::UTF_7 + end + end + + describe "when the first's Encoding is invalid" do + before :each do + @str = "\xff".force_encoding Encoding::UTF_8 + end + + it "returns the first's Encoding when the second's Encoding is US-ASCII" do + Encoding.compatible?(@str, "def".encode("us-ascii")).should == Encoding::UTF_8 + end + + it "returns the first's Encoding when the second String is ASCII only" do + Encoding.compatible?(@str, "\x7f").should == Encoding::UTF_8 + end + + it "returns nil when the second's Encoding is ASCII-8BIT but not ASCII only" do + Encoding.compatible?(@str, "\xff").should be_nil + end + + it "returns nil when the second's Encoding is invalid and ASCII only" do + Encoding.compatible?(@str, "\x7f".force_encoding("utf-16be")).should be_nil + end + + it "returns nil when the second's Encoding is invalid and not ASCII only" do + Encoding.compatible?(@str, "\xff".force_encoding("utf-16be")).should be_nil + end + + it "returns the Encoding when the second's Encoding is invalid but the same as the first" do + Encoding.compatible?(@str, @str).should == Encoding::UTF_8 + end + end + + describe "when the first String is empty and the second is not" do + describe "and the first's Encoding is ASCII compatible" do + before :each do + @str = "".force_encoding("utf-8") + end + + it "returns the first's encoding when the second String is ASCII only" do + Encoding.compatible?(@str, "def".encode("us-ascii")).should == Encoding::UTF_8 + end + + it "returns the second's encoding when the second String is not ASCII only" do + Encoding.compatible?(@str, "def".encode("utf-32le")).should == Encoding::UTF_32LE + end + end + + describe "when the first's Encoding is not ASCII compatible" do + before :each do + @str = "".force_encoding Encoding::UTF_7 + end + + it "returns the second string's encoding" do + Encoding.compatible?(@str, "def".encode("us-ascii")).should == Encoding::US_ASCII + end + end + end + + describe "when the second String is empty" do + before :each do + @str = "abc".force_encoding("utf-7") + end + + it "returns the first Encoding" do + Encoding.compatible?(@str, "").should == Encoding::UTF_7 + end + end + end + + describe "Encoding.compatible? String, Regexp" do + it "returns US-ASCII if both are US-ASCII" do + str = "abc".force_encoding("us-ascii") + Encoding.compatible?(str, /abc/).should == Encoding::US_ASCII + end + + it "returns the String's Encoding if it is not US-ASCII but both are ASCII only" do + [ [Encoding, "abc", Encoding::ASCII_8BIT], + [Encoding, "abc".encode("utf-8"), Encoding::UTF_8], + [Encoding, "abc".encode("euc-jp"), Encoding::EUC_JP], + [Encoding, "abc".encode("shift_jis"), Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, /abc/) + end + + it "returns the String's Encoding if the String is not ASCII only" do + [ [Encoding, "\xff", Encoding::ASCII_8BIT], + [Encoding, "\u3042".encode("utf-8"), Encoding::UTF_8], + [Encoding, "\xa4\xa2".force_encoding("euc-jp"), Encoding::EUC_JP], + [Encoding, "\x82\xa0".force_encoding("shift_jis"), Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, /abc/) + end + end + + describe "Encoding.compatible? String, Symbol" do + it "returns US-ASCII if both are ASCII only" do + str = "abc".force_encoding("us-ascii") + Encoding.compatible?(str, :abc).should == Encoding::US_ASCII + end + + it "returns the String's Encoding if it is not US-ASCII but both are ASCII only" do + [ [Encoding, "abc", Encoding::ASCII_8BIT], + [Encoding, "abc".encode("utf-8"), Encoding::UTF_8], + [Encoding, "abc".encode("euc-jp"), Encoding::EUC_JP], + [Encoding, "abc".encode("shift_jis"), Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, :abc) + end + + it "returns the String's Encoding if the String is not ASCII only" do + [ [Encoding, "\xff", Encoding::ASCII_8BIT], + [Encoding, "\u3042".encode("utf-8"), Encoding::UTF_8], + [Encoding, "\xa4\xa2".force_encoding("euc-jp"), Encoding::EUC_JP], + [Encoding, "\x82\xa0".force_encoding("shift_jis"), Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, :abc) + end + end + + describe "Encoding.compatible? String, Encoding" do + it "returns nil if the String's encoding is not ASCII compatible" do + Encoding.compatible?("abc".encode("utf-32le"), Encoding::US_ASCII).should be_nil + end + + it "returns nil if the Encoding is not ASCII compatible" do + Encoding.compatible?("abc".encode("us-ascii"), Encoding::UTF_32LE).should be_nil + end + + it "returns the String's encoding if the Encoding is US-ASCII" do + [ [Encoding, "\xff", Encoding::ASCII_8BIT], + [Encoding, "\u3042".encode("utf-8"), Encoding::UTF_8], + [Encoding, "\xa4\xa2".force_encoding("euc-jp"), Encoding::EUC_JP], + [Encoding, "\x82\xa0".force_encoding("shift_jis"), Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, Encoding::US_ASCII) + end + + it "returns the Encoding if the String's encoding is ASCII compatible and the String is ASCII only" do + str = "abc".encode("utf-8") + + Encoding.compatible?(str, Encoding::ASCII_8BIT).should == Encoding::ASCII_8BIT + Encoding.compatible?(str, Encoding::UTF_8).should == Encoding::UTF_8 + Encoding.compatible?(str, Encoding::EUC_JP).should == Encoding::EUC_JP + Encoding.compatible?(str, Encoding::Shift_JIS).should == Encoding::Shift_JIS + end + + it "returns nil if the String's encoding is ASCII compatible but the string is not ASCII only" do + Encoding.compatible?("\u3042".encode("utf-8"), Encoding::ASCII_8BIT).should be_nil + end + end + + describe "Encoding.compatible? Regexp, String" do + it "returns US-ASCII if both are US-ASCII" do + str = "abc".force_encoding("us-ascii") + Encoding.compatible?(/abc/, str).should == Encoding::US_ASCII + end + + end + + describe "Encoding.compatible? Regexp, Regexp" do + it "returns US-ASCII if both are US-ASCII" do + Encoding.compatible?(/abc/, /def/).should == Encoding::US_ASCII + end + + it "returns the first's Encoding if it is not US-ASCII and not ASCII only" do + [ [Encoding, Regexp.new("\xff"), Encoding::ASCII_8BIT], + [Encoding, Regexp.new("\u3042".encode("utf-8")), Encoding::UTF_8], + [Encoding, Regexp.new("\xa4\xa2".force_encoding("euc-jp")), Encoding::EUC_JP], + [Encoding, Regexp.new("\x82\xa0".force_encoding("shift_jis")), Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, /abc/) + end + end + + describe "Encoding.compatible? Regexp, Symbol" do + it "returns US-ASCII if both are US-ASCII" do + Encoding.compatible?(/abc/, :def).should == Encoding::US_ASCII + end + + it "returns the first's Encoding if it is not US-ASCII and not ASCII only" do + [ [Encoding, Regexp.new("\xff"), Encoding::ASCII_8BIT], + [Encoding, Regexp.new("\u3042".encode("utf-8")), Encoding::UTF_8], + [Encoding, Regexp.new("\xa4\xa2".force_encoding("euc-jp")), Encoding::EUC_JP], + [Encoding, Regexp.new("\x82\xa0".force_encoding("shift_jis")), Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, /abc/) + end + end + + describe "Encoding.compatible? Symbol, String" do + it "returns US-ASCII if both are ASCII only" do + str = "abc".force_encoding("us-ascii") + Encoding.compatible?(str, :abc).should == Encoding::US_ASCII + end + end + + describe "Encoding.compatible? Symbol, Regexp" do + it "returns US-ASCII if both are US-ASCII" do + Encoding.compatible?(:abc, /def/).should == Encoding::US_ASCII + end + + it "returns the Regexp's Encoding if it is not US-ASCII and not ASCII only" do + a = Regexp.new("\xff") + b = Regexp.new("\u3042".encode("utf-8")) + c = Regexp.new("\xa4\xa2".force_encoding("euc-jp")) + d = Regexp.new("\x82\xa0".force_encoding("shift_jis")) + + [ [Encoding, :abc, a, Encoding::ASCII_8BIT], + [Encoding, :abc, b, Encoding::UTF_8], + [Encoding, :abc, c, Encoding::EUC_JP], + [Encoding, :abc, d, Encoding::Shift_JIS], + ].should be_computed_by(:compatible?) + end + end + + describe "Encoding.compatible? Symbol, Symbol" do + it "returns US-ASCII if both are US-ASCII" do + Encoding.compatible?(:abc, :def).should == Encoding::US_ASCII + end + + it "returns the first's Encoding if it is not ASCII only" do + [ [Encoding, "\xff".to_sym, Encoding::ASCII_8BIT], + [Encoding, "\u3042".encode("utf-8").to_sym, Encoding::UTF_8], + [Encoding, "\xa4\xa2".force_encoding("euc-jp").to_sym, Encoding::EUC_JP], + [Encoding, "\x82\xa0".force_encoding("shift_jis").to_sym, Encoding::Shift_JIS], + ].should be_computed_by(:compatible?, :abc) + end + end + + describe "Encoding.compatible? Encoding, Encoding" do + it "returns nil if one of the encodings is a dummy encoding" do + [ [Encoding, Encoding::UTF_7, Encoding::US_ASCII, nil], + [Encoding, Encoding::US_ASCII, Encoding::UTF_7, nil], + [Encoding, Encoding::EUC_JP, Encoding::UTF_7, nil], + [Encoding, Encoding::UTF_7, Encoding::EUC_JP, nil], + [Encoding, Encoding::UTF_7, Encoding::ASCII_8BIT, nil], + [Encoding, Encoding::ASCII_8BIT, Encoding::UTF_7, nil], + ].should be_computed_by(:compatible?) + end + + it "returns nil if one of the encodings is not US-ASCII" do + [ [Encoding, Encoding::UTF_8, Encoding::ASCII_8BIT, nil], + [Encoding, Encoding::ASCII_8BIT, Encoding::UTF_8, nil], + [Encoding, Encoding::ASCII_8BIT, Encoding::EUC_JP, nil], + [Encoding, Encoding::Shift_JIS, Encoding::EUC_JP, nil], + ].should be_computed_by(:compatible?) + end + + it "returns the first if the second is US-ASCII" do + [ [Encoding, Encoding::UTF_8, Encoding::US_ASCII, Encoding::UTF_8], + [Encoding, Encoding::EUC_JP, Encoding::US_ASCII, Encoding::EUC_JP], + [Encoding, Encoding::Shift_JIS, Encoding::US_ASCII, Encoding::Shift_JIS], + [Encoding, Encoding::ASCII_8BIT, Encoding::US_ASCII, Encoding::ASCII_8BIT], + ].should be_computed_by(:compatible?) + end + + it "returns the Encoding if both are the same" do + [ [Encoding, Encoding::UTF_8, Encoding::UTF_8, Encoding::UTF_8], + [Encoding, Encoding::US_ASCII, Encoding::US_ASCII, Encoding::US_ASCII], + [Encoding, Encoding::ASCII_8BIT, Encoding::ASCII_8BIT, Encoding::ASCII_8BIT], + [Encoding, Encoding::UTF_7, Encoding::UTF_7, Encoding::UTF_7], + ].should be_computed_by(:compatible?) + end + end + + describe "Encoding.compatible? Object, Object" do + it "returns nil for Object, String" do + Encoding.compatible?(Object.new, "abc").should be_nil + end + + it "returns nil for Object, Regexp" do + Encoding.compatible?(Object.new, /./).should be_nil + end + + it "returns nil for Object, Symbol" do + Encoding.compatible?(Object.new, :sym).should be_nil + end + + it "returns nil for String, Object" do + Encoding.compatible?("abc", Object.new).should be_nil + end + + it "returns nil for Regexp, Object" do + Encoding.compatible?(/./, Object.new).should be_nil + end + + it "returns nil for Symbol, Object" do + Encoding.compatible?(:sym, Object.new).should be_nil + end + end +end |