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diff --git a/spec/rubyspec/core/string/split_spec.rb b/spec/rubyspec/core/string/split_spec.rb
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+# -*- encoding: utf-8 -*-
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes.rb', __FILE__)
+
+describe "String#split with String" do
+ with_feature :encoding do
+ it "throws an ArgumentError if the pattern is not a valid string" do
+ str = 'проверка'
+ broken_str = 'проверка'
+ broken_str.force_encoding('binary')
+ broken_str.chop!
+ broken_str.force_encoding('utf-8')
+ lambda { str.split(broken_str) }.should raise_error(ArgumentError)
+ end
+
+ it "splits on multibyte characters" do
+ "ありがりがとう".split("が").should == ["あり", "り", "とう"]
+ end
+ end
+
+ it "returns an array of substrings based on splitting on the given string" do
+ "mellow yellow".split("ello").should == ["m", "w y", "w"]
+ end
+
+ it "suppresses trailing empty fields when limit isn't given or 0" do
+ "1,2,,3,4,,".split(',').should == ["1", "2", "", "3", "4"]
+ "1,2,,3,4,,".split(',', 0).should == ["1", "2", "", "3", "4"]
+ " a b c\nd ".split(" ").should == ["", "a", "b", "c\nd"]
+ "hai".split("hai").should == []
+ ",".split(",").should == []
+ ",".split(",", 0).should == []
+ end
+
+ it "returns an array with one entry if limit is 1: the original string" do
+ "hai".split("hai", 1).should == ["hai"]
+ "x.y.z".split(".", 1).should == ["x.y.z"]
+ "hello world ".split(" ", 1).should == ["hello world "]
+ "hi!".split("", 1).should == ["hi!"]
+ end
+
+ it "returns at most limit fields when limit > 1" do
+ "hai".split("hai", 2).should == ["", ""]
+
+ "1,2".split(",", 3).should == ["1", "2"]
+
+ "1,2,,3,4,,".split(',', 2).should == ["1", "2,,3,4,,"]
+ "1,2,,3,4,,".split(',', 3).should == ["1", "2", ",3,4,,"]
+ "1,2,,3,4,,".split(',', 4).should == ["1", "2", "", "3,4,,"]
+ "1,2,,3,4,,".split(',', 5).should == ["1", "2", "", "3", "4,,"]
+ "1,2,,3,4,,".split(',', 6).should == ["1", "2", "", "3", "4", ","]
+
+ "x".split('x', 2).should == ["", ""]
+ "xx".split('x', 2).should == ["", "x"]
+ "xx".split('x', 3).should == ["", "", ""]
+ "xxx".split('x', 2).should == ["", "xx"]
+ "xxx".split('x', 3).should == ["", "", "x"]
+ "xxx".split('x', 4).should == ["", "", "", ""]
+ end
+
+ it "doesn't suppress or limit fields when limit is negative" do
+ "1,2,,3,4,,".split(',', -1).should == ["1", "2", "", "3", "4", "", ""]
+ "1,2,,3,4,,".split(',', -5).should == ["1", "2", "", "3", "4", "", ""]
+ " a b c\nd ".split(" ", -1).should == ["", "a", "b", "c\nd", ""]
+ ",".split(",", -1).should == ["", ""]
+ end
+
+ it "defaults to $; when string isn't given or nil" do
+ begin
+ old_fs = $;
+
+ [",", ":", "", "XY", nil].each do |fs|
+ $; = fs
+
+ ["x,y,z,,,", "1:2:", "aXYbXYcXY", ""].each do |str|
+ expected = str.split(fs || " ")
+
+ str.split(nil).should == expected
+ str.split.should == expected
+
+ str.split(nil, -1).should == str.split(fs || " ", -1)
+ str.split(nil, 0).should == str.split(fs || " ", 0)
+ str.split(nil, 2).should == str.split(fs || " ", 2)
+ end
+ end
+ ensure
+ $; = old_fs
+ end
+ end
+
+ it "ignores leading and continuous whitespace when string is a single space" do
+ " now's the time ".split(' ').should == ["now's", "the", "time"]
+ " now's the time ".split(' ', -1).should == ["now's", "the", "time", ""]
+ " now's the time ".split(' ', 3).should == ["now's", "the", "time "]
+
+ "\t\n a\t\tb \n\r\r\nc\v\vd\v ".split(' ').should == ["a", "b", "c", "d"]
+ "a\x00a b".split(' ').should == ["a\x00a", "b"]
+ end
+
+ describe "when limit is zero" do
+ it "ignores leading and continuous whitespace when string is a single space" do
+ " now's the time ".split(' ', 0).should == ["now's", "the", "time"]
+ end
+ end
+
+ it "splits between characters when its argument is an empty string" do
+ "hi!".split("").should == ["h", "i", "!"]
+ "hi!".split("", -1).should == ["h", "i", "!", ""]
+ "hi!".split("", 0).should == ["h", "i", "!"]
+ "hi!".split("", 1).should == ["hi!"]
+ "hi!".split("", 2).should == ["h", "i!"]
+ "hi!".split("", 3).should == ["h", "i", "!"]
+ "hi!".split("", 4).should == ["h", "i", "!", ""]
+ "hi!".split("", 5).should == ["h", "i", "!", ""]
+ end
+
+ it "tries converting its pattern argument to a string via to_str" do
+ obj = mock('::')
+ obj.should_receive(:to_str).and_return("::")
+
+ "hello::world".split(obj).should == ["hello", "world"]
+ end
+
+ it "tries converting limit to an integer via to_int" do
+ obj = mock('2')
+ obj.should_receive(:to_int).and_return(2)
+
+ "1.2.3.4".split(".", obj).should == ["1", "2.3.4"]
+ end
+
+ it "doesn't set $~" do
+ $~ = nil
+ "x.y.z".split(".")
+ $~.should == nil
+ end
+
+ it "returns the original string if no matches are found" do
+ "foo".split("bar").should == ["foo"]
+ "foo".split("bar", -1).should == ["foo"]
+ "foo".split("bar", 0).should == ["foo"]
+ "foo".split("bar", 1).should == ["foo"]
+ "foo".split("bar", 2).should == ["foo"]
+ "foo".split("bar", 3).should == ["foo"]
+ end
+
+ it "returns subclass instances based on self" do
+ ["", "x.y.z.", " x y "].each do |str|
+ ["", ".", " "].each do |pat|
+ [-1, 0, 1, 2].each do |limit|
+ StringSpecs::MyString.new(str).split(pat, limit).each do |x|
+ x.should be_an_instance_of(StringSpecs::MyString)
+ end
+
+ str.split(StringSpecs::MyString.new(pat), limit).each do |x|
+ x.should be_an_instance_of(String)
+ end
+ end
+ end
+ end
+ end
+
+ it "does not call constructor on created subclass instances" do
+ # can't call should_not_receive on an object that doesn't yet exist
+ # so failure here is signalled by exception, not expectation failure
+
+ s = StringSpecs::StringWithRaisingConstructor.new('silly:string')
+ s.split(':').first.should == 'silly'
+ end
+
+ it "taints the resulting strings if self is tainted" do
+ ["", "x.y.z.", " x y "].each do |str|
+ ["", ".", " "].each do |pat|
+ [-1, 0, 1, 2].each do |limit|
+ str.dup.taint.split(pat).each do |x|
+ x.tainted?.should == true
+ end
+
+ str.split(pat.dup.taint).each do |x|
+ x.tainted?.should == false
+ end
+ end
+ end
+ end
+ end
+end
+
+describe "String#split with Regexp" do
+ it "divides self on regexp matches" do
+ " now's the time".split(/ /).should == ["", "now's", "", "the", "time"]
+ " x\ny ".split(/ /).should == ["", "x\ny"]
+ "1, 2.34,56, 7".split(/,\s*/).should == ["1", "2.34", "56", "7"]
+ "1x2X3".split(/x/i).should == ["1", "2", "3"]
+ end
+
+ it "treats negative limits as no limit" do
+ "".split(%r!/+!, -1).should == []
+ end
+
+ it "suppresses trailing empty fields when limit isn't given or 0" do
+ "1,2,,3,4,,".split(/,/).should == ["1", "2", "", "3", "4"]
+ "1,2,,3,4,,".split(/,/, 0).should == ["1", "2", "", "3", "4"]
+ " a b c\nd ".split(/\s+/).should == ["", "a", "b", "c", "d"]
+ "hai".split(/hai/).should == []
+ ",".split(/,/).should == []
+ ",".split(/,/, 0).should == []
+ end
+
+ it "returns an array with one entry if limit is 1: the original string" do
+ "hai".split(/hai/, 1).should == ["hai"]
+ "xAyBzC".split(/[A-Z]/, 1).should == ["xAyBzC"]
+ "hello world ".split(/\s+/, 1).should == ["hello world "]
+ "hi!".split(//, 1).should == ["hi!"]
+ end
+
+ it "returns at most limit fields when limit > 1" do
+ "hai".split(/hai/, 2).should == ["", ""]
+
+ "1,2".split(/,/, 3).should == ["1", "2"]
+
+ "1,2,,3,4,,".split(/,/, 2).should == ["1", "2,,3,4,,"]
+ "1,2,,3,4,,".split(/,/, 3).should == ["1", "2", ",3,4,,"]
+ "1,2,,3,4,,".split(/,/, 4).should == ["1", "2", "", "3,4,,"]
+ "1,2,,3,4,,".split(/,/, 5).should == ["1", "2", "", "3", "4,,"]
+ "1,2,,3,4,,".split(/,/, 6).should == ["1", "2", "", "3", "4", ","]
+
+ "x".split(/x/, 2).should == ["", ""]
+ "xx".split(/x/, 2).should == ["", "x"]
+ "xx".split(/x/, 3).should == ["", "", ""]
+ "xxx".split(/x/, 2).should == ["", "xx"]
+ "xxx".split(/x/, 3).should == ["", "", "x"]
+ "xxx".split(/x/, 4).should == ["", "", "", ""]
+ end
+
+ it "doesn't suppress or limit fields when limit is negative" do
+ "1,2,,3,4,,".split(/,/, -1).should == ["1", "2", "", "3", "4", "", ""]
+ "1,2,,3,4,,".split(/,/, -5).should == ["1", "2", "", "3", "4", "", ""]
+ " a b c\nd ".split(/\s+/, -1).should == ["", "a", "b", "c", "d", ""]
+ ",".split(/,/, -1).should == ["", ""]
+ end
+
+ it "defaults to $; when regexp isn't given or nil" do
+ begin
+ old_fs = $;
+
+ [/,/, /:/, //, /XY/, /./].each do |fs|
+ $; = fs
+
+ ["x,y,z,,,", "1:2:", "aXYbXYcXY", ""].each do |str|
+ expected = str.split(fs)
+
+ str.split(nil).should == expected
+ str.split.should == expected
+
+ str.split(nil, -1).should == str.split(fs, -1)
+ str.split(nil, 0).should == str.split(fs, 0)
+ str.split(nil, 2).should == str.split(fs, 2)
+ end
+ end
+ ensure
+ $; = old_fs
+ end
+ end
+
+ it "splits between characters when regexp matches a zero-length string" do
+ "hello".split(//).should == ["h", "e", "l", "l", "o"]
+ "hello".split(//, -1).should == ["h", "e", "l", "l", "o", ""]
+ "hello".split(//, 0).should == ["h", "e", "l", "l", "o"]
+ "hello".split(//, 1).should == ["hello"]
+ "hello".split(//, 2).should == ["h", "ello"]
+ "hello".split(//, 5).should == ["h", "e", "l", "l", "o"]
+ "hello".split(//, 6).should == ["h", "e", "l", "l", "o", ""]
+ "hello".split(//, 7).should == ["h", "e", "l", "l", "o", ""]
+
+ "hi mom".split(/\s*/).should == ["h", "i", "m", "o", "m"]
+
+ "AABCCBAA".split(/(?=B)/).should == ["AA", "BCC", "BAA"]
+ "AABCCBAA".split(/(?=B)/, -1).should == ["AA", "BCC", "BAA"]
+ "AABCCBAA".split(/(?=B)/, 2).should == ["AA", "BCCBAA"]
+ end
+
+ it "respects unicode when splitting between characters" do
+ str = "こにちわ"
+ reg = %r!!
+ ary = str.split(reg)
+ ary.size.should == 4
+ ary.should == ["こ", "に", "ち", "わ"]
+ end
+
+ it "respects the encoding of the regexp when splitting between characters" do
+ str = "\303\202"
+ ary = str.split(//u)
+ ary.size.should == 1
+ ary.should == ["\303\202"]
+ end
+
+ it "includes all captures in the result array" do
+ "hello".split(/(el)/).should == ["h", "el", "lo"]
+ "hi!".split(/()/).should == ["h", "", "i", "", "!"]
+ "hi!".split(/()/, -1).should == ["h", "", "i", "", "!", "", ""]
+ "hello".split(/((el))()/).should == ["h", "el", "el", "", "lo"]
+ "AabB".split(/([a-z])+/).should == ["A", "b", "B"]
+ end
+
+ it "does not include non-matching captures in the result array" do
+ "hello".split(/(el)|(xx)/).should == ["h", "el", "lo"]
+ end
+
+ it "tries converting limit to an integer via to_int" do
+ obj = mock('2')
+ obj.should_receive(:to_int).and_return(2)
+
+ "1.2.3.4".split(".", obj).should == ["1", "2.3.4"]
+ end
+
+ it "returns a type error if limit can't be converted to an integer" do
+ lambda {"1.2.3.4".split(".", "three")}.should raise_error(TypeError)
+ lambda {"1.2.3.4".split(".", nil) }.should raise_error(TypeError)
+ end
+
+ it "doesn't set $~" do
+ $~ = nil
+ "x:y:z".split(/:/)
+ $~.should == nil
+ end
+
+ it "returns the original string if no matches are found" do
+ "foo".split(/bar/).should == ["foo"]
+ "foo".split(/bar/, -1).should == ["foo"]
+ "foo".split(/bar/, 0).should == ["foo"]
+ "foo".split(/bar/, 1).should == ["foo"]
+ "foo".split(/bar/, 2).should == ["foo"]
+ "foo".split(/bar/, 3).should == ["foo"]
+ end
+
+ it "returns subclass instances based on self" do
+ ["", "x:y:z:", " x y "].each do |str|
+ [//, /:/, /\s+/].each do |pat|
+ [-1, 0, 1, 2].each do |limit|
+ StringSpecs::MyString.new(str).split(pat, limit).each do |x|
+ x.should be_an_instance_of(StringSpecs::MyString)
+ end
+ end
+ end
+ end
+ end
+
+ it "does not call constructor on created subclass instances" do
+ # can't call should_not_receive on an object that doesn't yet exist
+ # so failure here is signalled by exception, not expectation failure
+
+ s = StringSpecs::StringWithRaisingConstructor.new('silly:string')
+ s.split(/:/).first.should == 'silly'
+ end
+
+ it "taints the resulting strings if self is tainted" do
+ ["", "x:y:z:", " x y "].each do |str|
+ [//, /:/, /\s+/].each do |pat|
+ [-1, 0, 1, 2].each do |limit|
+ str.dup.taint.split(pat, limit).each do |x|
+ # See the spec below for why the conditional is here
+ x.tainted?.should be_true unless x.empty?
+ end
+ end
+ end
+ end
+ end
+
+ it "taints an empty string if self is tainted" do
+ ":".taint.split(//, -1).last.tainted?.should be_true
+ end
+
+ it "doesn't taints the resulting strings if the Regexp is tainted" do
+ ["", "x:y:z:", " x y "].each do |str|
+ [//, /:/, /\s+/].each do |pat|
+ [-1, 0, 1, 2].each do |limit|
+ str.split(pat.dup.taint, limit).each do |x|
+ x.tainted?.should be_false
+ end
+ end
+ end
+ end
+ end
+
+ it "retains the encoding of the source string" do
+ ary = "а б в".split
+ encodings = ary.map { |s| s.encoding }
+ encodings.should == [Encoding::UTF_8, Encoding::UTF_8, Encoding::UTF_8]
+ end
+
+
+ it "splits a string on each character for a multibyte encoding and empty split" do
+ "That's why efficiency could not be helped".split("").size.should == 39
+ end
+
+ it "returns an ArgumentError if an invalid UTF-8 string is supplied" do
+ broken_str = 'проверка' # in russian, means "test"
+ broken_str.force_encoding('binary')
+ broken_str.chop!
+ broken_str.force_encoding('utf-8')
+ lambda{ broken_str.split(/\r\n|\r|\n/) }.should raise_error(ArgumentError)
+ end
+end