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Diffstat (limited to 'spec/ruby/core/string/reverse_spec.rb')
-rw-r--r-- | spec/ruby/core/string/reverse_spec.rb | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/spec/ruby/core/string/reverse_spec.rb b/spec/ruby/core/string/reverse_spec.rb new file mode 100644 index 0000000000..c37e815ba3 --- /dev/null +++ b/spec/ruby/core/string/reverse_spec.rb @@ -0,0 +1,52 @@ +# encoding: utf-8 + +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes.rb', __FILE__) + +describe "String#reverse" do + it "returns a new string with the characters of self in reverse order" do + "stressed".reverse.should == "desserts" + "m".reverse.should == "m" + "".reverse.should == "" + end + + it "taints the result if self is tainted" do + "".taint.reverse.tainted?.should == true + "m".taint.reverse.tainted?.should == true + end + + with_feature :encoding do + it "reverses a string with multi byte characters" do + "微軟正黑體".reverse.should == "體黑正軟微" + end + end + +end + +describe "String#reverse!" do + it "reverses self in place and always returns self" do + a = "stressed" + a.reverse!.should equal(a) + a.should == "desserts" + + "".reverse!.should == "" + end + + it "raises a RuntimeError on a frozen instance that is modified" do + lambda { "anna".freeze.reverse! }.should raise_error(RuntimeError) + lambda { "hello".freeze.reverse! }.should raise_error(RuntimeError) + end + + # see [ruby-core:23666] + it "raises a RuntimeError on a frozen instance that would not be modified" do + lambda { "".freeze.reverse! }.should raise_error(RuntimeError) + end + + with_feature :encoding do + it "reverses a string with multi byte characters" do + str = "微軟正黑體" + str.reverse! + str.should == "體黑正軟微" + end + end +end |