diff options
Diffstat (limited to 'spec/ruby/core/string/chop_spec.rb')
-rw-r--r-- | spec/ruby/core/string/chop_spec.rb | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/spec/ruby/core/string/chop_spec.rb b/spec/ruby/core/string/chop_spec.rb new file mode 100644 index 0000000000..4e9a39f866 --- /dev/null +++ b/spec/ruby/core/string/chop_spec.rb @@ -0,0 +1,128 @@ +# -*- encoding: utf-8 -*- +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes.rb', __FILE__) + +describe "String#chop" do + it "removes the final character" do + "abc".chop.should == "ab" + end + + it "removes the final carriage return" do + "abc\r".chop.should == "abc" + end + + it "removes the final newline" do + "abc\n".chop.should == "abc" + end + + it "removes the final carriage return, newline" do + "abc\r\n".chop.should == "abc" + end + + it "removes the carrige return, newline if they are the only characters" do + "\r\n".chop.should == "" + end + + it "does not remove more than the final carriage return, newline" do + "abc\r\n\r\n".chop.should == "abc\r\n" + end + + with_feature :encoding do + it "removes a multi-byte character" do + "あれ".chop.should == "あ" + end + + it "removes the final carriage return, newline from a multibyte String" do + "あれ\r\n".chop.should == "あれ" + end + + it "removes the final carriage return, newline from a non-ASCII String" do + str = "abc\r\n".encode "utf-32be" + str.chop.should == "abc".encode("utf-32be") + end + end + + it "returns an empty string when applied to an empty string" do + "".chop.should == "" + end + + it "returns a new string when applied to an empty string" do + s = "" + s.chop.should_not equal(s) + end + + it "taints result when self is tainted" do + "hello".taint.chop.tainted?.should == true + "".taint.chop.tainted?.should == true + end + + it "untrusts result when self is untrusted" do + "hello".untrust.chop.untrusted?.should == true + "".untrust.chop.untrusted?.should == true + end + + it "returns subclass instances when called on a subclass" do + StringSpecs::MyString.new("hello\n").chop.should be_an_instance_of(StringSpecs::MyString) + end +end + +describe "String#chop!" do + it "removes the final character" do + "abc".chop!.should == "ab" + end + + it "removes the final carriage return" do + "abc\r".chop!.should == "abc" + end + + it "removes the final newline" do + "abc\n".chop!.should == "abc" + end + + it "removes the final carriage return, newline" do + "abc\r\n".chop!.should == "abc" + end + + it "removes the carrige return, newline if they are the only characters" do + "\r\n".chop!.should == "" + end + + it "does not remove more than the final carriage return, newline" do + "abc\r\n\r\n".chop!.should == "abc\r\n" + end + + with_feature :encoding do + it "removes a multi-byte character" do + "あれ".chop!.should == "あ" + end + + it "removes the final carriage return, newline from a multibyte String" do + "あれ\r\n".chop!.should == "あれ" + end + + it "removes the final carriage return, newline from a non-ASCII String" do + str = "abc\r\n".encode "utf-32be" + str.chop!.should == "abc".encode("utf-32be") + end + end + + it "returns self if modifications were made" do + str = "hello" + str.chop!.should equal(str) + end + + it "returns nil when called on an empty string" do + "".chop!.should be_nil + end + + it "raises a RuntimeError on a frozen instance that is modified" do + lambda { "string\n\r".freeze.chop! }.should raise_error(RuntimeError) + end + + # see [ruby-core:23666] + it "raises a RuntimeError on a frozen instance that would not be modified" do + a = "" + a.freeze + lambda { a.chop! }.should raise_error(RuntimeError) + end +end |