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Diffstat (limited to 'spec/rubyspec/language/string_spec.rb')
-rw-r--r-- | spec/rubyspec/language/string_spec.rb | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/spec/rubyspec/language/string_spec.rb b/spec/rubyspec/language/string_spec.rb new file mode 100644 index 0000000000..dbec2652ed --- /dev/null +++ b/spec/rubyspec/language/string_spec.rb @@ -0,0 +1,282 @@ +# -*- encoding: binary -*- + +require File.expand_path('../../spec_helper', __FILE__) + +# TODO: rewrite these horrid specs. it "are..." seriously?! + +describe "Ruby character strings" do + + before :each do + @ip = 'xxx' # used for interpolation + $ip = 'xxx' + end + + it "don't get interpolated when put in single quotes" do + '#{@ip}'.should == '#{@ip}' + end + + it 'get interpolated with #{} when put in double quotes' do + "#{@ip}".should == 'xxx' + end + + it "interpolate instance variables just with the # character" do + "#@ip".should == 'xxx' + end + + it "interpolate global variables just with the # character" do + "#$ip".should == 'xxx' + end + + it "allows underscore as part of a variable name in a simple interpolation" do + @my_ip = 'xxx' + "#@my_ip".should == 'xxx' + end + + it "has characters [.(=?!# end simple # interpolation" do + "#@ip[".should == 'xxx[' + "#@ip.".should == 'xxx.' + "#@ip(".should == 'xxx(' + "#@ip=".should == 'xxx=' + "#@ip?".should == 'xxx?' + "#@ip!".should == 'xxx!' + "#@ip#@ip".should == 'xxxxxx' + end + + it "taints the result of interpolation when an interpolated value is tainted" do + "#{"".taint}".tainted?.should be_true + + @ip.taint + "#@ip".tainted?.should be_true + + $ip.taint + "#$ip".tainted?.should be_true + end + + it "untrusts the result of interpolation when an interpolated value is untrusted" do + "#{"".untrust}".untrusted?.should be_true + + @ip.untrust + "#@ip".untrusted?.should be_true + + $ip.untrust + "#$ip".untrusted?.should be_true + end + + it "allows using non-alnum characters as string delimiters" do + %(hey #{@ip}).should == "hey xxx" + %[hey #{@ip}].should == "hey xxx" + %{hey #{@ip}}.should == "hey xxx" + %<hey #{@ip}>.should == "hey xxx" + %!hey #{@ip}!.should == "hey xxx" + %@hey #{@ip}@.should == "hey xxx" + %#hey hey#.should == "hey hey" + %%hey #{@ip}%.should == "hey xxx" + %^hey #{@ip}^.should == "hey xxx" + %&hey #{@ip}&.should == "hey xxx" + %*hey #{@ip}*.should == "hey xxx" + %-hey #{@ip}-.should == "hey xxx" + %_hey #{@ip}_.should == "hey xxx" + %=hey #{@ip}=.should == "hey xxx" + %+hey #{@ip}+.should == "hey xxx" + %~hey #{@ip}~.should == "hey xxx" + %:hey #{@ip}:.should == "hey xxx" + %;hey #{@ip};.should == "hey xxx" + %"hey #{@ip}".should == "hey xxx" + %|hey #{@ip}|.should == "hey xxx" + %?hey #{@ip}?.should == "hey xxx" + %/hey #{@ip}/.should == "hey xxx" + %,hey #{@ip},.should == "hey xxx" + %.hey #{@ip}..should == "hey xxx" + + # surprised? huh + %'hey #{@ip}'.should == "hey xxx" + %\hey #{@ip}\.should == "hey xxx" + %`hey #{@ip}`.should == "hey xxx" + %$hey #{@ip}$.should == "hey xxx" + end + + it "using percent with 'q', stopping interpolation" do + %q(#{@ip}).should == '#{@ip}' + end + + it "using percent with 'Q' to interpolate" do + %Q(#{@ip}).should == 'xxx' + end + + # The backslashes : + # + # \t (tab), \n (newline), \r (carriage return), \f (form feed), \b + # (backspace), \a (bell), \e (escape), \s (whitespace), \nnn (octal), + # \xnn (hexadecimal), \cx (control x), \C-x (control x), \M-x (meta x), + # \M-\C-x (meta control x) + + it "backslashes follow the same rules as interpolation" do + "\t\n\r\f\b\a\e\s\075\x62\cx".should == "\t\n\r\f\b\a\e =b\030" + '\t\n\r\f\b\a\e =b\030'.should == "\\t\\n\\r\\f\\b\\a\\e =b\\030" + end + + it "calls #to_s when the object is not a String" do + obj = mock('to_s') + obj.stub!(:to_s).and_return('42') + + "#{obj}".should == '42' + end + + it "calls #to_s as a private method" do + obj = mock('to_s') + obj.stub!(:to_s).and_return('42') + + class << obj + private :to_s + end + + "#{obj}".should == '42' + end + + it "uses an internal representation when #to_s doesn't return a String" do + obj = mock('to_s') + obj.stub!(:to_s).and_return(42) + + # See rubyspec commit 787c132d by yugui. There is value in + # ensuring that this behavior works. So rather than removing + # this spec completely, the only thing that can be asserted + # is that if you interpolate an object that fails to return + # a String, you will still get a String and not raise an + # exception. + "#{obj}".should be_an_instance_of(String) + end + + it "allows a dynamic string to parse a nested do...end block as an argument to a call without parens, interpolated" do + s = eval 'eval "#{proc do; 1; end.call}"' + s.should == 1 + end + + it "are produced from character shortcuts" do + ?z.should == 'z' + end + + it "are produced from control character shortcuts" do + # Control-Z + ?\C-z.should == "\x1A" + + # Meta-Z + ?\M-z.should == "\xFA" + + # Meta-Control-Z + ?\M-\C-z.should == "\x9A" + end + + describe "Unicode escaping" do + it "can be done with \\u and four hex digits" do + [ ["\u0000", 0x0000], + ["\u2020", 0x2020] + ].should be_computed_by(:ord) + end + + it "can be done with \\u{} and one to six hex digits" do + [ ["\u{a}", 0xa], + ["\u{ab}", 0xab], + ["\u{abc}", 0xabc], + ["\u{1abc}", 0x1abc], + ["\u{12abc}", 0x12abc], + ["\u{100000}", 0x100000] + ].should be_computed_by(:ord) + end + + # TODO: spec other source encodings + describe "with ASCII_8BIT source encoding" do + it "produces an ASCII string when escaping ASCII characters via \\u" do + "\u0000".encoding.should == Encoding::ASCII_8BIT + end + + it "produces an ASCII string when escaping ASCII characters via \\u{}" do + "\u{0000}".encoding.should == Encoding::ASCII_8BIT + end + + it "produces a UTF-8-encoded string when escaping non-ASCII characters via \\u" do + "\u1234".encoding.should == Encoding::UTF_8 + end + + it "produces a UTF-8-encoded string when escaping non-ASCII characters via \\u{}" do + "\u{1234}".encoding.should == Encoding::UTF_8 + end + end + end +end + +# TODO: rewrite all specs above this + +describe "Ruby String literals" do + def str_concat + "foo" "bar" "baz" + end + + def long_string_literals + "Beautiful is better than ugly." \ + "Explicit is better than implicit." + end + + it "on a single line with spaces in between are concatenated together" do + str_concat.should == "foobarbaz" + end + + it "on multiple lines with newlines and backslash in between are concatenated together" do + long_string_literals.should == "Beautiful is better than ugly.Explicit is better than implicit." + end + + ruby_version_is "2.3" do + describe "with a magic frozen comment" do + it "produce the same object each time" do + ruby_exe(fixture(__FILE__, "freeze_magic_comment_one_literal.rb")).chomp.should == "true" + end + + it "produce the same object for literals with the same content" do + ruby_exe(fixture(__FILE__, "freeze_magic_comment_two_literals.rb")).chomp.should == "true" + end + + it "produce the same object for literals with the same content in different files" do + ruby_exe(fixture(__FILE__, "freeze_magic_comment_across_files.rb")).chomp.should == "true" + end + + it "produce different objects for literals with the same content in different files if the other file doesn't have the comment" do + ruby_exe(fixture(__FILE__, "freeze_magic_comment_across_files_no_comment.rb")).chomp.should == "true" + end + + it "produce different objects for literals with the same content in different files if they have different encodings" do + ruby_exe(fixture(__FILE__, "freeze_magic_comment_across_files_diff_enc.rb")).chomp.should == "true" + end + end + end + +end + +with_feature :encoding do + describe "Ruby String interpolation" do + it "creates a String having an Encoding compatible with all components" do + a = "\u3042" + b = "abc".encode("ascii-8bit") + + str = "#{a} x #{b}" + + str.should == "\xe3\x81\x82\x20\x78\x20\x61\x62\x63".force_encoding("utf-8") + str.encoding.should == Encoding::UTF_8 + end + + it "creates a String having the Encoding of the components when all are the same Encoding" do + a = "abc".force_encoding("euc-jp") + b = "def".force_encoding("euc-jp") + str = '"#{a} x #{b}"'.force_encoding("euc-jp") + + result = eval(str) + result.should == "\x61\x62\x63\x20\x78\x20\x64\x65\x66".force_encoding("euc-jp") + result.encoding.should == Encoding::EUC_JP + end + + it "raises an Encoding::CompatibilityError if the Encodings are not compatible" do + a = "\u3042" + b = "\xff".force_encoding "ascii-8bit" + + lambda { "#{a} #{b}" }.should raise_error(Encoding::CompatibilityError) + end + end +end |