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da7976235f
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67112 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
429 lines
14 KiB
Ruby
429 lines
14 KiB
Ruby
# -*- encoding: utf-8 -*-
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require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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describe "String#split with String" do
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with_feature :encoding do
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it "throws an ArgumentError if the pattern is not a valid string" do
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str = 'проверка'
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broken_str = 'проверка'
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broken_str.force_encoding('binary')
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broken_str.chop!
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broken_str.force_encoding('utf-8')
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lambda { str.split(broken_str) }.should raise_error(ArgumentError)
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end
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it "splits on multibyte characters" do
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"ありがりがとう".split("が").should == ["あり", "り", "とう"]
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end
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end
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it "returns an array of substrings based on splitting on the given string" do
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"mellow yellow".split("ello").should == ["m", "w y", "w"]
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end
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it "suppresses trailing empty fields when limit isn't given or 0" do
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"1,2,,3,4,,".split(',').should == ["1", "2", "", "3", "4"]
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"1,2,,3,4,,".split(',', 0).should == ["1", "2", "", "3", "4"]
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" a b c\nd ".split(" ").should == ["", "a", "b", "c\nd"]
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"hai".split("hai").should == []
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",".split(",").should == []
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",".split(",", 0).should == []
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end
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it "returns an array with one entry if limit is 1: the original string" do
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"hai".split("hai", 1).should == ["hai"]
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"x.y.z".split(".", 1).should == ["x.y.z"]
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"hello world ".split(" ", 1).should == ["hello world "]
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"hi!".split("", 1).should == ["hi!"]
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end
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it "returns at most limit fields when limit > 1" do
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"hai".split("hai", 2).should == ["", ""]
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"1,2".split(",", 3).should == ["1", "2"]
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"1,2,,3,4,,".split(',', 2).should == ["1", "2,,3,4,,"]
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"1,2,,3,4,,".split(',', 3).should == ["1", "2", ",3,4,,"]
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"1,2,,3,4,,".split(',', 4).should == ["1", "2", "", "3,4,,"]
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"1,2,,3,4,,".split(',', 5).should == ["1", "2", "", "3", "4,,"]
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"1,2,,3,4,,".split(',', 6).should == ["1", "2", "", "3", "4", ","]
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"x".split('x', 2).should == ["", ""]
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"xx".split('x', 2).should == ["", "x"]
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"xx".split('x', 3).should == ["", "", ""]
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"xxx".split('x', 2).should == ["", "xx"]
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"xxx".split('x', 3).should == ["", "", "x"]
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"xxx".split('x', 4).should == ["", "", "", ""]
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end
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it "doesn't suppress or limit fields when limit is negative" do
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"1,2,,3,4,,".split(',', -1).should == ["1", "2", "", "3", "4", "", ""]
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"1,2,,3,4,,".split(',', -5).should == ["1", "2", "", "3", "4", "", ""]
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" a b c\nd ".split(" ", -1).should == ["", "a", "b", "c\nd", ""]
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",".split(",", -1).should == ["", ""]
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end
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it "defaults to $; when string isn't given or nil" do
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begin
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old_fs = $;
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[",", ":", "", "XY", nil].each do |fs|
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$; = fs
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["x,y,z,,,", "1:2:", "aXYbXYcXY", ""].each do |str|
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expected = str.split(fs || " ")
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str.split(nil).should == expected
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str.split.should == expected
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str.split(nil, -1).should == str.split(fs || " ", -1)
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str.split(nil, 0).should == str.split(fs || " ", 0)
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str.split(nil, 2).should == str.split(fs || " ", 2)
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end
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end
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ensure
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$; = old_fs
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end
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end
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it "ignores leading and continuous whitespace when string is a single space" do
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" now's the time ".split(' ').should == ["now's", "the", "time"]
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" now's the time ".split(' ', -1).should == ["now's", "the", "time", ""]
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" now's the time ".split(' ', 3).should == ["now's", "the", "time "]
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"\t\n a\t\tb \n\r\r\nc\v\vd\v ".split(' ').should == ["a", "b", "c", "d"]
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"a\x00a b".split(' ').should == ["a\x00a", "b"]
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end
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describe "when limit is zero" do
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it "ignores leading and continuous whitespace when string is a single space" do
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" now's the time ".split(' ', 0).should == ["now's", "the", "time"]
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end
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end
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it "splits between characters when its argument is an empty string" do
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"hi!".split("").should == ["h", "i", "!"]
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"hi!".split("", -1).should == ["h", "i", "!", ""]
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"hi!".split("", 0).should == ["h", "i", "!"]
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"hi!".split("", 1).should == ["hi!"]
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"hi!".split("", 2).should == ["h", "i!"]
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"hi!".split("", 3).should == ["h", "i", "!"]
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"hi!".split("", 4).should == ["h", "i", "!", ""]
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"hi!".split("", 5).should == ["h", "i", "!", ""]
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end
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it "tries converting its pattern argument to a string via to_str" do
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obj = mock('::')
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obj.should_receive(:to_str).and_return("::")
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"hello::world".split(obj).should == ["hello", "world"]
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end
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it "tries converting limit to an integer via to_int" do
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obj = mock('2')
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obj.should_receive(:to_int).and_return(2)
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"1.2.3.4".split(".", obj).should == ["1", "2.3.4"]
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end
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it "doesn't set $~" do
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$~ = nil
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"x.y.z".split(".")
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$~.should == nil
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end
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it "returns the original string if no matches are found" do
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"foo".split("bar").should == ["foo"]
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"foo".split("bar", -1).should == ["foo"]
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"foo".split("bar", 0).should == ["foo"]
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"foo".split("bar", 1).should == ["foo"]
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"foo".split("bar", 2).should == ["foo"]
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"foo".split("bar", 3).should == ["foo"]
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end
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it "returns subclass instances based on self" do
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["", "x.y.z.", " x y "].each do |str|
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["", ".", " "].each do |pat|
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[-1, 0, 1, 2].each do |limit|
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StringSpecs::MyString.new(str).split(pat, limit).each do |x|
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x.should be_an_instance_of(StringSpecs::MyString)
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end
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str.split(StringSpecs::MyString.new(pat), limit).each do |x|
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x.should be_an_instance_of(String)
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end
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end
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end
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end
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end
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it "does not call constructor on created subclass instances" do
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# can't call should_not_receive on an object that doesn't yet exist
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# so failure here is signalled by exception, not expectation failure
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s = StringSpecs::StringWithRaisingConstructor.new('silly:string')
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s.split(':').first.should == 'silly'
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end
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it "taints the resulting strings if self is tainted" do
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["", "x.y.z.", " x y "].each do |str|
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["", ".", " "].each do |pat|
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[-1, 0, 1, 2].each do |limit|
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str.dup.taint.split(pat).each do |x|
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x.tainted?.should == true
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end
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str.split(pat.dup.taint).each do |x|
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x.tainted?.should == false
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end
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end
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end
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end
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end
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end
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describe "String#split with Regexp" do
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it "divides self on regexp matches" do
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" now's the time".split(/ /).should == ["", "now's", "", "the", "time"]
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" x\ny ".split(/ /).should == ["", "x\ny"]
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"1, 2.34,56, 7".split(/,\s*/).should == ["1", "2.34", "56", "7"]
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"1x2X3".split(/x/i).should == ["1", "2", "3"]
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end
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it "treats negative limits as no limit" do
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"".split(%r!/+!, -1).should == []
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end
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it "suppresses trailing empty fields when limit isn't given or 0" do
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"1,2,,3,4,,".split(/,/).should == ["1", "2", "", "3", "4"]
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"1,2,,3,4,,".split(/,/, 0).should == ["1", "2", "", "3", "4"]
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" a b c\nd ".split(/\s+/).should == ["", "a", "b", "c", "d"]
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"hai".split(/hai/).should == []
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",".split(/,/).should == []
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",".split(/,/, 0).should == []
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end
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it "returns an array with one entry if limit is 1: the original string" do
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"hai".split(/hai/, 1).should == ["hai"]
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"xAyBzC".split(/[A-Z]/, 1).should == ["xAyBzC"]
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"hello world ".split(/\s+/, 1).should == ["hello world "]
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"hi!".split(//, 1).should == ["hi!"]
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end
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it "returns at most limit fields when limit > 1" do
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"hai".split(/hai/, 2).should == ["", ""]
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"1,2".split(/,/, 3).should == ["1", "2"]
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"1,2,,3,4,,".split(/,/, 2).should == ["1", "2,,3,4,,"]
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"1,2,,3,4,,".split(/,/, 3).should == ["1", "2", ",3,4,,"]
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"1,2,,3,4,,".split(/,/, 4).should == ["1", "2", "", "3,4,,"]
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"1,2,,3,4,,".split(/,/, 5).should == ["1", "2", "", "3", "4,,"]
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"1,2,,3,4,,".split(/,/, 6).should == ["1", "2", "", "3", "4", ","]
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"x".split(/x/, 2).should == ["", ""]
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"xx".split(/x/, 2).should == ["", "x"]
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"xx".split(/x/, 3).should == ["", "", ""]
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"xxx".split(/x/, 2).should == ["", "xx"]
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"xxx".split(/x/, 3).should == ["", "", "x"]
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"xxx".split(/x/, 4).should == ["", "", "", ""]
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end
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it "doesn't suppress or limit fields when limit is negative" do
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"1,2,,3,4,,".split(/,/, -1).should == ["1", "2", "", "3", "4", "", ""]
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"1,2,,3,4,,".split(/,/, -5).should == ["1", "2", "", "3", "4", "", ""]
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" a b c\nd ".split(/\s+/, -1).should == ["", "a", "b", "c", "d", ""]
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",".split(/,/, -1).should == ["", ""]
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end
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it "defaults to $; when regexp isn't given or nil" do
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begin
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old_fs = $;
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[/,/, /:/, //, /XY/, /./].each do |fs|
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$; = fs
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["x,y,z,,,", "1:2:", "aXYbXYcXY", ""].each do |str|
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expected = str.split(fs)
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str.split(nil).should == expected
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str.split.should == expected
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str.split(nil, -1).should == str.split(fs, -1)
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str.split(nil, 0).should == str.split(fs, 0)
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str.split(nil, 2).should == str.split(fs, 2)
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end
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end
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ensure
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$; = old_fs
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end
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end
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it "splits between characters when regexp matches a zero-length string" do
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"hello".split(//).should == ["h", "e", "l", "l", "o"]
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"hello".split(//, -1).should == ["h", "e", "l", "l", "o", ""]
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"hello".split(//, 0).should == ["h", "e", "l", "l", "o"]
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"hello".split(//, 1).should == ["hello"]
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"hello".split(//, 2).should == ["h", "ello"]
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"hello".split(//, 5).should == ["h", "e", "l", "l", "o"]
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"hello".split(//, 6).should == ["h", "e", "l", "l", "o", ""]
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"hello".split(//, 7).should == ["h", "e", "l", "l", "o", ""]
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"hi mom".split(/\s*/).should == ["h", "i", "m", "o", "m"]
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"AABCCBAA".split(/(?=B)/).should == ["AA", "BCC", "BAA"]
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"AABCCBAA".split(/(?=B)/, -1).should == ["AA", "BCC", "BAA"]
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"AABCCBAA".split(/(?=B)/, 2).should == ["AA", "BCCBAA"]
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end
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it "respects unicode when splitting between characters" do
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str = "こにちわ"
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reg = %r!!
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ary = str.split(reg)
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ary.size.should == 4
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ary.should == ["こ", "に", "ち", "わ"]
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end
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it "respects the encoding of the regexp when splitting between characters" do
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str = "\303\202"
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ary = str.split(//u)
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ary.size.should == 1
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ary.should == ["\303\202"]
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end
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it "includes all captures in the result array" do
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"hello".split(/(el)/).should == ["h", "el", "lo"]
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"hi!".split(/()/).should == ["h", "", "i", "", "!"]
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"hi!".split(/()/, -1).should == ["h", "", "i", "", "!", "", ""]
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"hello".split(/((el))()/).should == ["h", "el", "el", "", "lo"]
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"AabB".split(/([a-z])+/).should == ["A", "b", "B"]
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end
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it "applies the limit to the number of split substrings, without counting captures" do
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"aBaBa".split(/(B)()()/, 2).should == ["a", "B", "", "", "aBa"]
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end
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it "does not include non-matching captures in the result array" do
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"hello".split(/(el)|(xx)/).should == ["h", "el", "lo"]
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end
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it "tries converting limit to an integer via to_int" do
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obj = mock('2')
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obj.should_receive(:to_int).and_return(2)
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"1.2.3.4".split(".", obj).should == ["1", "2.3.4"]
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end
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it "returns a type error if limit can't be converted to an integer" do
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lambda {"1.2.3.4".split(".", "three")}.should raise_error(TypeError)
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lambda {"1.2.3.4".split(".", nil) }.should raise_error(TypeError)
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end
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it "doesn't set $~" do
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$~ = nil
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"x:y:z".split(/:/)
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$~.should == nil
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end
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it "returns the original string if no matches are found" do
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"foo".split(/bar/).should == ["foo"]
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"foo".split(/bar/, -1).should == ["foo"]
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"foo".split(/bar/, 0).should == ["foo"]
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"foo".split(/bar/, 1).should == ["foo"]
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"foo".split(/bar/, 2).should == ["foo"]
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"foo".split(/bar/, 3).should == ["foo"]
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end
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it "returns subclass instances based on self" do
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["", "x:y:z:", " x y "].each do |str|
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[//, /:/, /\s+/].each do |pat|
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[-1, 0, 1, 2].each do |limit|
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StringSpecs::MyString.new(str).split(pat, limit).each do |x|
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x.should be_an_instance_of(StringSpecs::MyString)
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end
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end
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end
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end
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end
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it "does not call constructor on created subclass instances" do
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# can't call should_not_receive on an object that doesn't yet exist
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# so failure here is signalled by exception, not expectation failure
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s = StringSpecs::StringWithRaisingConstructor.new('silly:string')
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s.split(/:/).first.should == 'silly'
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end
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it "taints the resulting strings if self is tainted" do
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["", "x:y:z:", " x y "].each do |str|
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[//, /:/, /\s+/].each do |pat|
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[-1, 0, 1, 2].each do |limit|
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str.dup.taint.split(pat, limit).each do |x|
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# See the spec below for why the conditional is here
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x.tainted?.should be_true unless x.empty?
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end
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end
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end
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end
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end
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it "taints an empty string if self is tainted" do
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":".taint.split(//, -1).last.tainted?.should be_true
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end
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it "doesn't taints the resulting strings if the Regexp is tainted" do
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["", "x:y:z:", " x y "].each do |str|
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[//, /:/, /\s+/].each do |pat|
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[-1, 0, 1, 2].each do |limit|
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str.split(pat.dup.taint, limit).each do |x|
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x.tainted?.should be_false
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end
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end
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end
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end
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end
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it "retains the encoding of the source string" do
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ary = "а б в".split
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encodings = ary.map { |s| s.encoding }
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encodings.should == [Encoding::UTF_8, Encoding::UTF_8, Encoding::UTF_8]
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end
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it "splits a string on each character for a multibyte encoding and empty split" do
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"That's why efficiency could not be helped".split("").size.should == 39
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end
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it "returns an ArgumentError if an invalid UTF-8 string is supplied" do
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broken_str = 'проверка' # in russian, means "test"
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broken_str.force_encoding('binary')
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broken_str.chop!
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broken_str.force_encoding('utf-8')
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lambda{ broken_str.split(/\r\n|\r|\n/) }.should raise_error(ArgumentError)
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end
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ruby_version_is "2.6" do
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it "yields each split substrings if a block is given" do
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a = []
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returned_object = "chunky bacon".split(" ") { |str| a << str.capitalize }
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returned_object.should == "chunky bacon"
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a.should == ["Chunky", "Bacon"]
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end
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describe "for a String subclass" do
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it "yields instances of the same subclass" do
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a = []
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StringSpecs::MyString.new("a|b").split("|") { |str| a << str }
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first, last = a
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first.should be_an_instance_of(StringSpecs::MyString)
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first.should == "a"
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last.should be_an_instance_of(StringSpecs::MyString)
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last.should == "b"
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end
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end
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end
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end
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