mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
366 lines
12 KiB
Ruby
366 lines
12 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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require_relative 'fixtures/utf-8-encoding'
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describe "String#rindex with object" do
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it "raises a TypeError if obj isn't a String, Integer or Regexp" do
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not_supported_on :opal do
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-> { "hello".rindex(:sym) }.should raise_error(TypeError)
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end
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-> { "hello".rindex(mock('x')) }.should raise_error(TypeError)
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end
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it "doesn't try to convert obj to an integer via to_int" do
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obj = mock('x')
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obj.should_not_receive(:to_int)
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-> { "hello".rindex(obj) }.should raise_error(TypeError)
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end
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it "tries to convert obj to a string via to_str" do
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obj = mock('lo')
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def obj.to_str() "lo" end
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"hello".rindex(obj).should == "hello".rindex("lo")
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obj = mock('o')
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def obj.respond_to?(arg, *) true end
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def obj.method_missing(*args) "o" end
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"hello".rindex(obj).should == "hello".rindex("o")
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end
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end
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describe "String#rindex with String" do
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it "behaves the same as String#rindex(char) for one-character strings" do
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"blablabla hello cruel world...!".split("").uniq.each do |str|
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chr = str[0]
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str.rindex(str).should == str.rindex(chr)
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0.upto(str.size + 1) do |start|
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str.rindex(str, start).should == str.rindex(chr, start)
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end
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(-str.size - 1).upto(-1) do |start|
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str.rindex(str, start).should == str.rindex(chr, start)
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end
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end
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end
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it "behaves the same as String#rindex(?char) for one-character strings" do
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"blablabla hello cruel world...!".split("").uniq.each do |str|
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chr = str[0] =~ / / ? str[0] : eval("?#{str[0]}")
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str.rindex(str).should == str.rindex(chr)
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0.upto(str.size + 1) do |start|
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str.rindex(str, start).should == str.rindex(chr, start)
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end
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(-str.size - 1).upto(-1) do |start|
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str.rindex(str, start).should == str.rindex(chr, start)
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end
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end
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end
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it "returns the index of the last occurrence of the given substring" do
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"blablabla".rindex("").should == 9
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"blablabla".rindex("a").should == 8
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"blablabla".rindex("la").should == 7
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"blablabla".rindex("bla").should == 6
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"blablabla".rindex("abla").should == 5
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"blablabla".rindex("labla").should == 4
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"blablabla".rindex("blabla").should == 3
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"blablabla".rindex("ablabla").should == 2
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"blablabla".rindex("lablabla").should == 1
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"blablabla".rindex("blablabla").should == 0
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"blablabla".rindex("l").should == 7
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"blablabla".rindex("bl").should == 6
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"blablabla".rindex("abl").should == 5
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"blablabla".rindex("labl").should == 4
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"blablabla".rindex("blabl").should == 3
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"blablabla".rindex("ablabl").should == 2
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"blablabla".rindex("lablabl").should == 1
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"blablabla".rindex("blablabl").should == 0
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"blablabla".rindex("b").should == 6
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"blablabla".rindex("ab").should == 5
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"blablabla".rindex("lab").should == 4
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"blablabla".rindex("blab").should == 3
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"blablabla".rindex("ablab").should == 2
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"blablabla".rindex("lablab").should == 1
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"blablabla".rindex("blablab").should == 0
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end
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it "doesn't set $~" do
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$~ = nil
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'hello.'.rindex('ll')
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$~.should == nil
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end
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it "ignores string subclasses" do
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"blablabla".rindex(StringSpecs::MyString.new("bla")).should == 6
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StringSpecs::MyString.new("blablabla").rindex("bla").should == 6
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StringSpecs::MyString.new("blablabla").rindex(StringSpecs::MyString.new("bla")).should == 6
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end
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it "starts the search at the given offset" do
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"blablabla".rindex("bl", 0).should == 0
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"blablabla".rindex("bl", 1).should == 0
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"blablabla".rindex("bl", 2).should == 0
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"blablabla".rindex("bl", 3).should == 3
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"blablabla".rindex("bla", 0).should == 0
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"blablabla".rindex("bla", 1).should == 0
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"blablabla".rindex("bla", 2).should == 0
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"blablabla".rindex("bla", 3).should == 3
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"blablabla".rindex("blab", 0).should == 0
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"blablabla".rindex("blab", 1).should == 0
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"blablabla".rindex("blab", 2).should == 0
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"blablabla".rindex("blab", 3).should == 3
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"blablabla".rindex("blab", 6).should == 3
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"blablablax".rindex("blab", 6).should == 3
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"blablabla".rindex("la", 1).should == 1
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"blablabla".rindex("la", 2).should == 1
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"blablabla".rindex("la", 3).should == 1
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"blablabla".rindex("la", 4).should == 4
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"blablabla".rindex("lab", 1).should == 1
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"blablabla".rindex("lab", 2).should == 1
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"blablabla".rindex("lab", 3).should == 1
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"blablabla".rindex("lab", 4).should == 4
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"blablabla".rindex("ab", 2).should == 2
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"blablabla".rindex("ab", 3).should == 2
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"blablabla".rindex("ab", 4).should == 2
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"blablabla".rindex("ab", 5).should == 5
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"blablabla".rindex("", 0).should == 0
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"blablabla".rindex("", 1).should == 1
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"blablabla".rindex("", 2).should == 2
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"blablabla".rindex("", 7).should == 7
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"blablabla".rindex("", 8).should == 8
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"blablabla".rindex("", 9).should == 9
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"blablabla".rindex("", 10).should == 9
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end
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it "starts the search at offset + self.length if offset is negative" do
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str = "blablabla"
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["bl", "bla", "blab", "la", "lab", "ab", ""].each do |needle|
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(-str.length .. -1).each do |offset|
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str.rindex(needle, offset).should ==
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str.rindex(needle, offset + str.length)
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end
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end
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end
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it "returns nil if the substring isn't found" do
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"blablabla".rindex("B").should == nil
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"blablabla".rindex("z").should == nil
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"blablabla".rindex("BLA").should == nil
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"blablabla".rindex("blablablabla").should == nil
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"hello".rindex("lo", 0).should == nil
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"hello".rindex("lo", 1).should == nil
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"hello".rindex("lo", 2).should == nil
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"hello".rindex("llo", 0).should == nil
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"hello".rindex("llo", 1).should == nil
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"hello".rindex("el", 0).should == nil
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"hello".rindex("ello", 0).should == nil
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"hello".rindex("", -6).should == nil
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"hello".rindex("", -7).should == nil
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"hello".rindex("h", -6).should == nil
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end
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it "tries to convert start_offset to an integer via to_int" do
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obj = mock('5')
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def obj.to_int() 5 end
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"str".rindex("st", obj).should == 0
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obj = mock('5')
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def obj.respond_to?(arg, *) true end
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def obj.method_missing(*args) 5 end
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"str".rindex("st", obj).should == 0
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end
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it "raises a TypeError when given offset is nil" do
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-> { "str".rindex("st", nil) }.should raise_error(TypeError)
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end
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end
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describe "String#rindex with Regexp" do
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it "behaves the same as String#rindex(string) for escaped string regexps" do
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["blablabla", "hello cruel world...!"].each do |str|
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["", "b", "bla", "lab", "o c", "d."].each do |needle|
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regexp = Regexp.new(Regexp.escape(needle))
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str.rindex(regexp).should == str.rindex(needle)
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0.upto(str.size + 1) do |start|
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str.rindex(regexp, start).should == str.rindex(needle, start)
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end
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(-str.size - 1).upto(-1) do |start|
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str.rindex(regexp, start).should == str.rindex(needle, start)
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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 "returns the index of the first match from the end of string of regexp" do
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"blablabla".rindex(/bla/).should == 6
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"blablabla".rindex(/BLA/i).should == 6
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"blablabla".rindex(/.{0}/).should == 9
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"blablabla".rindex(/.{1}/).should == 8
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"blablabla".rindex(/.{2}/).should == 7
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"blablabla".rindex(/.{6}/).should == 3
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"blablabla".rindex(/.{9}/).should == 0
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"blablabla".rindex(/.*/).should == 9
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"blablabla".rindex(/.+/).should == 8
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"blablabla".rindex(/bla|a/).should == 8
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not_supported_on :opal do
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"blablabla".rindex(/\A/).should == 0
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"blablabla".rindex(/\Z/).should == 9
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"blablabla".rindex(/\z/).should == 9
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"blablabla\n".rindex(/\Z/).should == 10
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"blablabla\n".rindex(/\z/).should == 10
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end
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"blablabla".rindex(/^/).should == 0
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not_supported_on :opal do
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"\nblablabla".rindex(/^/).should == 1
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"b\nlablabla".rindex(/^/).should == 2
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end
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"blablabla".rindex(/$/).should == 9
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"blablabla".rindex(/.l./).should == 6
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end
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it "sets $~ to MatchData of match and nil when there's none" do
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'hello.'.rindex(/.(.)/)
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$~[0].should == 'o.'
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'hello.'.rindex(/not/)
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$~.should == nil
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end
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it "starts the search at the given offset" do
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"blablabla".rindex(/.{0}/, 5).should == 5
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"blablabla".rindex(/.{1}/, 5).should == 5
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"blablabla".rindex(/.{2}/, 5).should == 5
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"blablabla".rindex(/.{3}/, 5).should == 5
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"blablabla".rindex(/.{4}/, 5).should == 5
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"blablabla".rindex(/.{0}/, 3).should == 3
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"blablabla".rindex(/.{1}/, 3).should == 3
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"blablabla".rindex(/.{2}/, 3).should == 3
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"blablabla".rindex(/.{5}/, 3).should == 3
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"blablabla".rindex(/.{6}/, 3).should == 3
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"blablabla".rindex(/.l./, 0).should == 0
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"blablabla".rindex(/.l./, 1).should == 0
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"blablabla".rindex(/.l./, 2).should == 0
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"blablabla".rindex(/.l./, 3).should == 3
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"blablablax".rindex(/.x/, 10).should == 8
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"blablablax".rindex(/.x/, 9).should == 8
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"blablablax".rindex(/.x/, 8).should == 8
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"blablablax".rindex(/..x/, 10).should == 7
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"blablablax".rindex(/..x/, 9).should == 7
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"blablablax".rindex(/..x/, 8).should == 7
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"blablablax".rindex(/..x/, 7).should == 7
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not_supported_on :opal do
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"blablabla\n".rindex(/\Z/, 9).should == 9
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end
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end
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it "starts the search at offset + self.length if offset is negative" do
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str = "blablabla"
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["bl", "bla", "blab", "la", "lab", "ab", ""].each do |needle|
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(-str.length .. -1).each do |offset|
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str.rindex(needle, offset).should ==
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str.rindex(needle, offset + str.length)
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end
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end
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end
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it "returns nil if the substring isn't found" do
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"blablabla".rindex(/BLA/).should == nil
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"blablabla".rindex(/.{10}/).should == nil
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"blablablax".rindex(/.x/, 7).should == nil
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"blablablax".rindex(/..x/, 6).should == nil
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not_supported_on :opal do
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"blablabla".rindex(/\Z/, 5).should == nil
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"blablabla".rindex(/\z/, 5).should == nil
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"blablabla\n".rindex(/\z/, 9).should == nil
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end
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end
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not_supported_on :opal do
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it "supports \\G which matches at the given start offset" do
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"helloYOU.".rindex(/YOU\G/, 8).should == 5
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"helloYOU.".rindex(/YOU\G/).should == nil
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idx = "helloYOUall!".index("YOU")
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re = /YOU.+\G.+/
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# The # marks where \G will match.
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[
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["helloYOU#all.", nil],
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["helloYOUa#ll.", idx],
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["helloYOUal#l.", idx],
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["helloYOUall#.", idx],
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["helloYOUall.#", nil]
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].each do |i|
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start = i[0].index("#")
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str = i[0].delete("#")
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str.rindex(re, start).should == i[1]
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end
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end
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end
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it "tries to convert start_offset to an integer via to_int" do
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obj = mock('5')
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def obj.to_int() 5 end
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"str".rindex(/../, obj).should == 1
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obj = mock('5')
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def obj.respond_to?(arg, *) true end
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def obj.method_missing(*args); 5; end
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"str".rindex(/../, obj).should == 1
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end
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it "raises a TypeError when given offset is nil" do
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-> { "str".rindex(/../, nil) }.should raise_error(TypeError)
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end
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it "returns the reverse character index of a multibyte character" do
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"ありがりがとう".rindex("が").should == 4
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"ありがりがとう".rindex(/が/).should == 4
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end
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it "returns the character index before the finish" do
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"ありがりがとう".rindex("が", 3).should == 2
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"ありがりがとう".rindex(/が/, 3).should == 2
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end
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it "raises an Encoding::CompatibilityError if the encodings are incompatible" do
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re = Regexp.new "れ".encode(Encoding::EUC_JP)
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-> do
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"あれ".rindex re
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end.should raise_error(Encoding::CompatibilityError)
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end
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end
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