diff options
Diffstat (limited to 'spec/ruby/core/string/shared/codepoints.rb')
-rw-r--r-- | spec/ruby/core/string/shared/codepoints.rb | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/spec/ruby/core/string/shared/codepoints.rb b/spec/ruby/core/string/shared/codepoints.rb new file mode 100644 index 0000000000..1ee13c82f4 --- /dev/null +++ b/spec/ruby/core/string/shared/codepoints.rb @@ -0,0 +1,56 @@ +# -*- encoding: binary -*- +describe :string_codepoints, shared: true do + it "raises an ArgumentError when self has an invalid encoding and a method is called on the returned Enumerator" do + s = "\xDF".force_encoding(Encoding::UTF_8) + s.valid_encoding?.should be_false + lambda { s.send(@method).to_a }.should raise_error(ArgumentError) + end + + it "yields each codepoint to the block if one is given" do + codepoints = [] + "abcd".send(@method) do |codepoint| + codepoints << codepoint + end + codepoints.should == [97, 98, 99, 100] + end + + it "raises an ArgumentError if self's encoding is invalid and a block is given" do + s = "\xDF".force_encoding(Encoding::UTF_8) + s.valid_encoding?.should be_false + lambda { s.send(@method) { } }.should raise_error(ArgumentError) + end + + it "returns codepoints as Fixnums" do + "glark\u{20}".send(@method).to_a.each do |codepoint| + codepoint.should be_an_instance_of(Fixnum) + end + end + + it "returns one codepoint for each character" do + s = "\u{9876}\u{28}\u{1987}" + s.send(@method).to_a.size.should == s.chars.to_a.size + end + + it "works for multibyte characters" do + s = "\u{9819}" + s.bytesize.should == 3 + s.send(@method).to_a.should == [38937] + end + + it "returns the codepoint corresponding to the character's position in the String's encoding" do + "\u{787}".send(@method).to_a.should == [1927] + end + + it "round-trips to the original String using Integer#chr" do + s = "\u{13}\u{7711}\u{1010}" + s2 = "" + s.send(@method) {|n| s2 << n.chr(Encoding::UTF_8)} + s.should == s2 + end + + it "is synonomous with #bytes for Strings which are single-byte optimisable" do + s = "(){}".encode('ascii') + s.ascii_only?.should be_true + s.send(@method).to_a.should == s.bytes.to_a + end +end |