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+# -*- encoding: utf-8 -*-
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "String#split with String" do
+ it "throws an ArgumentError if the string is not a valid" do
+ s = "\xDF".dup.force_encoding(Encoding::UTF_8)
+
+ -> { s.split }.should raise_error(ArgumentError)
+ -> { s.split(':') }.should raise_error(ArgumentError)
+ end
+
+ it "throws an ArgumentError if the pattern is not a valid string" do
+ str = 'проверка'
+ broken_str = "\xDF".dup.force_encoding(Encoding::UTF_8)
+
+ -> { 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
+
+ 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"]
+ " a あ c\nd ".split(" ").should == ["", "a", "あ", "c\nd"]
+ "hai".split("hai").should == []
+ ",".split(",").should == []
+ ",".split(",", 0).should == []
+ "あ".split("あ").should == []
+ "あ".split("あ", 0).should == []
+ end
+
+ it "does not suppress trailing empty fields when a positive limit is given" do
+ " 1 2 ".split(" ", 2).should == ["1", "2 "]
+ " 1 2 ".split(" ", 3).should == ["1", "2", ""]
+ " 1 2 ".split(" ", 4).should == ["1", "2", ""]
+ " 1 あ ".split(" ", 2).should == ["1", "あ "]
+ " 1 あ ".split(" ", 3).should == ["1", "あ", ""]
+ " 1 あ ".split(" ", 4).should == ["1", "あ", ""]
+
+ "1,2,".split(',', 2).should == ["1", "2,"]
+ "1,2,".split(',', 3).should == ["1", "2", ""]
+ "1,2,".split(',', 4).should == ["1", "2", ""]
+ "1,あ,".split(',', 2).should == ["1", "あ,"]
+ "1,あ,".split(',', 3).should == ["1", "あ", ""]
+ "1,あ,".split(',', 4).should == ["1", "あ", ""]
+
+ "1 2 ".split(/ /, 2).should == ["1", "2 "]
+ "1 2 ".split(/ /, 3).should == ["1", "2", ""]
+ "1 2 ".split(/ /, 4).should == ["1", "2", ""]
+ "1 あ ".split(/ /, 2).should == ["1", "あ "]
+ "1 あ ".split(/ /, 3).should == ["1", "あ", ""]
+ "1 あ ".split(/ /, 4).should == ["1", "あ", ""]
+ 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 "raises a RangeError when the limit is larger than int" do
+ -> { "a,b".split(" ", 2147483649) }.should raise_error(RangeError)
+ end
+
+ it "defaults to $; when string isn't given or nil" do
+ suppress_warning do
+ old_fs = $;
+ begin
+ [",", ":", "", "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
+
+ context "when $; is not nil" do
+ before do
+ suppress_warning do
+ @old_value, $; = $;, 'foobar'
+ end
+ end
+
+ after do
+ $; = @old_value
+ end
+
+ it "warns" do
+ -> { "".split }.should complain(/warning: \$; is set to non-nil value/)
+ end
+ 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 String 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(String)
+ end
+
+ str.split(StringSpecs::MyString.new(pat), limit).each do |x|
+ x.should be_an_instance_of(String)
+ end
+ end
+ end
+ end
+ end
+
+ it "returns an empty array when whitespace is split on whitespace" do
+ " ".split(" ").should == []
+ " \n ".split(" ").should == []
+ " ".split(" ").should == []
+ " \t ".split(" ").should == []
+ end
+
+ it "doesn't split on non-ascii whitespace" do
+ "a\u{2008}b".split(" ").should == ["a\u{2008}b"]
+ end
+
+ it "returns Strings in the same encoding as self" do
+ strings = "hello world".encode("US-ASCII").split(" ")
+
+ strings[0].encoding.should == Encoding::US_ASCII
+ strings[1].encoding.should == Encoding::US_ASCII
+ end
+end
+
+describe "String#split with Regexp" do
+ it "throws an ArgumentError if the string is not a valid" do
+ s = "\xDF".dup.force_encoding(Encoding::UTF_8)
+
+ -> { s.split(/./) }.should raise_error(ArgumentError)
+ end
+
+ 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
+ suppress_warning do
+ old_fs = $;
+ begin
+ [/,/, /:/, //, /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
+ 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 "applies the limit to the number of split substrings, without counting captures" do
+ "aBaBa".split(/(B)()()/, 2).should == ["a", "B", "", "", "aBa"]
+ 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
+ -> {"1.2.3.4".split(".", "three")}.should raise_error(TypeError)
+ -> {"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 String 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(String)
+ end
+ end
+ end
+ end
+ end
+
+ it "returns Strings in the same encoding as self" 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')
+ ->{ broken_str.split(/\r\n|\r|\n/) }.should raise_error(ArgumentError)
+ end
+
+ # See https://bugs.ruby-lang.org/issues/12689 and https://github.com/jruby/jruby/issues/4868
+ it "allows concurrent Regexp calls in a shared context" do
+ str = 'a,b,c,d,e'
+
+ p = proc { str.split(/,/) }
+ results = 10.times.map { Thread.new { x = nil; 100.times { x = p.call }; x } }.map(&:value)
+
+ results.should == [%w[a b c d e]] * 10
+ end
+
+ context "when a block is given" do
+ it "yields each split substring with default pattern" do
+ a = []
+ returned_object = "chunky bacon".split { |str| a << str.capitalize }
+
+ returned_object.should == "chunky bacon"
+ a.should == ["Chunky", "Bacon"]
+ end
+
+ it "yields each split substring with default pattern for a lazy substring" do
+ a = []
+ returned_object = "chunky bacon"[1...-1].split { |str| a << str.capitalize }
+
+ returned_object.should == "hunky baco"
+ a.should == ["Hunky", "Baco"]
+ end
+
+ it "yields each split substring with default pattern for a non-ASCII string" do
+ a = []
+ returned_object = "l'été arrive bientôt".split { |str| a << str }
+
+ returned_object.should == "l'été arrive bientôt"
+ a.should == ["l'été", "arrive", "bientôt"]
+ end
+
+ it "yields each split substring with default pattern for a non-ASCII lazy substring" do
+ a = []
+ returned_object = "l'été arrive bientôt"[1...-1].split { |str| a << str }
+
+ returned_object.should == "'été arrive bientô"
+ a.should == ["'été", "arrive", "bientô"]
+ end
+
+ it "yields the string when limit is 1" do
+ a = []
+ returned_object = "chunky bacon".split("", 1) { |str| a << str.capitalize }
+
+ returned_object.should == "chunky bacon"
+ a.should == ["Chunky bacon"]
+ end
+
+ it "yields each split letter" do
+ a = []
+ returned_object = "chunky".split("", 0) { |str| a << str.capitalize }
+
+ returned_object.should == "chunky"
+ a.should == %w(C H U N K Y)
+ end
+
+ it "yields each split substring with a pattern" do
+ a = []
+ returned_object = "chunky-bacon".split("-", 0) { |str| a << str.capitalize }
+
+ returned_object.should == "chunky-bacon"
+ a.should == ["Chunky", "Bacon"]
+ end
+
+ it "yields each split substring with empty regexp pattern" do
+ a = []
+ returned_object = "chunky".split(//) { |str| a << str.capitalize }
+
+ returned_object.should == "chunky"
+ a.should == %w(C H U N K Y)
+ end
+
+ it "yields each split substring with empty regexp pattern and limit" do
+ a = []
+ returned_object = "chunky".split(//, 3) { |str| a << str.capitalize }
+
+ returned_object.should == "chunky"
+ a.should == %w(C H Unky)
+ end
+
+ it "yields each split substring with a regexp pattern" do
+ a = []
+ returned_object = "chunky:bacon".split(/:/) { |str| a << str.capitalize }
+
+ returned_object.should == "chunky:bacon"
+ a.should == ["Chunky", "Bacon"]
+ end
+
+ it "returns a string as is (and doesn't call block) if it is empty" do
+ a = []
+ returned_object = "".split { |str| a << str.capitalize }
+
+ returned_object.should == ""
+ a.should == []
+ end
+ end
+
+ describe "for a String subclass" do
+ it "yields instances of String" do
+ a = []
+ StringSpecs::MyString.new("a|b").split("|") { |str| a << str }
+ first, last = a
+
+ first.should be_an_instance_of(String)
+ first.should == "a"
+
+ last.should be_an_instance_of(String)
+ last.should == "b"
+ end
+ end
+
+ it "raises a TypeError when not called with nil, String, or Regexp" do
+ -> { "hello".split(42) }.should raise_error(TypeError)
+ -> { "hello".split(:ll) }.should raise_error(TypeError)
+ -> { "hello".split(false) }.should raise_error(TypeError)
+ -> { "hello".split(Object.new) }.should raise_error(TypeError)
+ end
+
+ it "returns Strings in the same encoding as self" do
+ strings = "hello world".encode("US-ASCII").split(/ /)
+
+ strings[0].encoding.should == Encoding::US_ASCII
+ strings[1].encoding.should == Encoding::US_ASCII
+ end
+end
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