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Diffstat (limited to 'spec/ruby/core/string/chr_spec.rb')
-rw-r--r-- | spec/ruby/core/string/chr_spec.rb | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/spec/ruby/core/string/chr_spec.rb b/spec/ruby/core/string/chr_spec.rb new file mode 100644 index 0000000000..c7834b78b7 --- /dev/null +++ b/spec/ruby/core/string/chr_spec.rb @@ -0,0 +1,44 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +with_feature :encoding do + describe "String#chr" do + it "returns a copy of self" do + s = 'e' + s.object_id.should_not == s.chr.object_id + end + + it "returns a String" do + 'glark'.chr.should be_an_instance_of(String) + end + + it "returns an empty String if self is an empty String" do + "".chr.should == "" + end + + it "returns a 1-character String" do + "glark".chr.size.should == 1 + end + + it "returns the character at the start of the String" do + "Goodbye, world".chr.should == "G" + end + + it "returns a String in the same encoding as self" do + "\x24".encode(Encoding::US_ASCII).chr.encoding.should == Encoding::US_ASCII + end + + it "understands multi-byte characters" do + s = "\u{9879}" + s.bytesize.should == 3 + s.chr.should == s + end + + it "understands Strings that contain a mixture of character widths" do + three = "\u{8082}" + three.bytesize.should == 3 + four = "\u{77082}" + four.bytesize.should == 4 + "#{three}#{four}".chr.should == three + end + end +end |