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Diffstat (limited to 'spec/ruby/core/string/byterindex_spec.rb')
| -rw-r--r-- | spec/ruby/core/string/byterindex_spec.rb | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/spec/ruby/core/string/byterindex_spec.rb b/spec/ruby/core/string/byterindex_spec.rb new file mode 100644 index 0000000000..150f709b90 --- /dev/null +++ b/spec/ruby/core/string/byterindex_spec.rb @@ -0,0 +1,359 @@ +# -*- encoding: utf-8 -*- +require_relative '../../spec_helper' +require_relative 'fixtures/classes' +require_relative 'shared/byte_index_common.rb' + +describe "String#byterindex with object" do + ruby_version_is "3.2" do + it "tries to convert obj to a string via to_str" do + obj = mock('lo') + def obj.to_str() "lo" end + "hello".byterindex(obj).should == "hello".byterindex("lo") + + obj = mock('o') + def obj.respond_to?(arg, *) true end + def obj.method_missing(*args) "o" end + "hello".byterindex(obj).should == "hello".byterindex("o") + end + + it "calls #to_int to convert the second argument" do + offset = mock("string index offset") + offset.should_receive(:to_int).and_return(3) + "abc".byterindex("c", offset).should == 2 + end + + it "does not raise IndexError when byte offset is correct or on string boundary" do + "わ".byterindex("", 0).should == 0 + "わ".byterindex("", 3).should == 3 + "わ".byterindex("").should == 3 + end + + it_behaves_like :byte_index_common, :byterindex + end +end + +describe "String#byterindex with String" do + ruby_version_is "3.2" do + it "behaves the same as String#byterindex(char) for one-character strings" do + "blablabla hello cruel world...!".split("").uniq.each do |str| + chr = str[0] + str.byterindex(str).should == str.byterindex(chr) + + 0.upto(str.size + 1) do |start| + str.byterindex(str, start).should == str.byterindex(chr, start) + end + + (-str.size - 1).upto(-1) do |start| + str.byterindex(str, start).should == str.byterindex(chr, start) + end + end + end + + it "behaves the same as String#byterindex(?char) for one-character strings" do + "blablabla hello cruel world...!".split("").uniq.each do |str| + chr = str[0] =~ / / ? str[0] : eval("?#{str[0]}") + str.byterindex(str).should == str.byterindex(chr) + + 0.upto(str.size + 1) do |start| + str.byterindex(str, start).should == str.byterindex(chr, start) + end + + (-str.size - 1).upto(-1) do |start| + str.byterindex(str, start).should == str.byterindex(chr, start) + end + end + end + + it "returns the index of the last occurrence of the given substring" do + "blablabla".byterindex("").should == 9 + "blablabla".byterindex("a").should == 8 + "blablabla".byterindex("la").should == 7 + "blablabla".byterindex("bla").should == 6 + "blablabla".byterindex("abla").should == 5 + "blablabla".byterindex("labla").should == 4 + "blablabla".byterindex("blabla").should == 3 + "blablabla".byterindex("ablabla").should == 2 + "blablabla".byterindex("lablabla").should == 1 + "blablabla".byterindex("blablabla").should == 0 + + "blablabla".byterindex("l").should == 7 + "blablabla".byterindex("bl").should == 6 + "blablabla".byterindex("abl").should == 5 + "blablabla".byterindex("labl").should == 4 + "blablabla".byterindex("blabl").should == 3 + "blablabla".byterindex("ablabl").should == 2 + "blablabla".byterindex("lablabl").should == 1 + "blablabla".byterindex("blablabl").should == 0 + + "blablabla".byterindex("b").should == 6 + "blablabla".byterindex("ab").should == 5 + "blablabla".byterindex("lab").should == 4 + "blablabla".byterindex("blab").should == 3 + "blablabla".byterindex("ablab").should == 2 + "blablabla".byterindex("lablab").should == 1 + "blablabla".byterindex("blablab").should == 0 + end + + it "ignores string subclasses" do + "blablabla".byterindex(StringSpecs::MyString.new("bla")).should == 6 + StringSpecs::MyString.new("blablabla").byterindex("bla").should == 6 + StringSpecs::MyString.new("blablabla").byterindex(StringSpecs::MyString.new("bla")).should == 6 + end + + it "starts the search at the given offset" do + "blablabla".byterindex("bl", 0).should == 0 + "blablabla".byterindex("bl", 1).should == 0 + "blablabla".byterindex("bl", 2).should == 0 + "blablabla".byterindex("bl", 3).should == 3 + + "blablabla".byterindex("bla", 0).should == 0 + "blablabla".byterindex("bla", 1).should == 0 + "blablabla".byterindex("bla", 2).should == 0 + "blablabla".byterindex("bla", 3).should == 3 + + "blablabla".byterindex("blab", 0).should == 0 + "blablabla".byterindex("blab", 1).should == 0 + "blablabla".byterindex("blab", 2).should == 0 + "blablabla".byterindex("blab", 3).should == 3 + "blablabla".byterindex("blab", 6).should == 3 + "blablablax".byterindex("blab", 6).should == 3 + + "blablabla".byterindex("la", 1).should == 1 + "blablabla".byterindex("la", 2).should == 1 + "blablabla".byterindex("la", 3).should == 1 + "blablabla".byterindex("la", 4).should == 4 + + "blablabla".byterindex("lab", 1).should == 1 + "blablabla".byterindex("lab", 2).should == 1 + "blablabla".byterindex("lab", 3).should == 1 + "blablabla".byterindex("lab", 4).should == 4 + + "blablabla".byterindex("ab", 2).should == 2 + "blablabla".byterindex("ab", 3).should == 2 + "blablabla".byterindex("ab", 4).should == 2 + "blablabla".byterindex("ab", 5).should == 5 + + "blablabla".byterindex("", 0).should == 0 + "blablabla".byterindex("", 1).should == 1 + "blablabla".byterindex("", 2).should == 2 + "blablabla".byterindex("", 7).should == 7 + "blablabla".byterindex("", 8).should == 8 + "blablabla".byterindex("", 9).should == 9 + "blablabla".byterindex("", 10).should == 9 + end + + it "starts the search at offset + self.length if offset is negative" do + str = "blablabla" + + ["bl", "bla", "blab", "la", "lab", "ab", ""].each do |needle| + (-str.length .. -1).each do |offset| + str.byterindex(needle, offset).should == + str.byterindex(needle, offset + str.length) + end + end + end + + it "returns nil if the substring isn't found" do + "blablabla".byterindex("B").should == nil + "blablabla".byterindex("z").should == nil + "blablabla".byterindex("BLA").should == nil + "blablabla".byterindex("blablablabla").should == nil + + "hello".byterindex("lo", 0).should == nil + "hello".byterindex("lo", 1).should == nil + "hello".byterindex("lo", 2).should == nil + + "hello".byterindex("llo", 0).should == nil + "hello".byterindex("llo", 1).should == nil + + "hello".byterindex("el", 0).should == nil + "hello".byterindex("ello", 0).should == nil + + "hello".byterindex("", -6).should == nil + "hello".byterindex("", -7).should == nil + + "hello".byterindex("h", -6).should == nil + end + + it "tries to convert start_offset to an integer via to_int" do + obj = mock('5') + def obj.to_int() 5 end + "str".byterindex("st", obj).should == 0 + + obj = mock('5') + def obj.respond_to?(arg, *) true end + def obj.method_missing(*args) 5 end + "str".byterindex("st", obj).should == 0 + end + + it "raises a TypeError when given offset is nil" do + -> { "str".byterindex("st", nil) }.should raise_error(TypeError) + end + + it "handles a substring in a superset encoding" do + 'abc'.dup.force_encoding(Encoding::US_ASCII).byterindex('é').should == nil + end + + it "handles a substring in a subset encoding" do + 'été'.byterindex('t'.dup.force_encoding(Encoding::US_ASCII)).should == 2 + end + end +end + +describe "String#byterindex with Regexp" do + ruby_version_is "3.2" do + it "behaves the same as String#byterindex(string) for escaped string regexps" do + ["blablabla", "hello cruel world...!"].each do |str| + ["", "b", "bla", "lab", "o c", "d."].each do |needle| + regexp = Regexp.new(Regexp.escape(needle)) + str.byterindex(regexp).should == str.byterindex(needle) + + 0.upto(str.size + 1) do |start| + str.byterindex(regexp, start).should == str.byterindex(needle, start) + end + + (-str.size - 1).upto(-1) do |start| + str.byterindex(regexp, start).should == str.byterindex(needle, start) + end + end + end + end + + it "returns the index of the first match from the end of string of regexp" do + "blablabla".byterindex(/bla/).should == 6 + "blablabla".byterindex(/BLA/i).should == 6 + + "blablabla".byterindex(/.{0}/).should == 9 + "blablabla".byterindex(/.{1}/).should == 8 + "blablabla".byterindex(/.{2}/).should == 7 + "blablabla".byterindex(/.{6}/).should == 3 + "blablabla".byterindex(/.{9}/).should == 0 + + "blablabla".byterindex(/.*/).should == 9 + "blablabla".byterindex(/.+/).should == 8 + + "blablabla".byterindex(/bla|a/).should == 8 + + not_supported_on :opal do + "blablabla".byterindex(/\A/).should == 0 + "blablabla".byterindex(/\Z/).should == 9 + "blablabla".byterindex(/\z/).should == 9 + "blablabla\n".byterindex(/\Z/).should == 10 + "blablabla\n".byterindex(/\z/).should == 10 + end + + "blablabla".byterindex(/^/).should == 0 + not_supported_on :opal do + "\nblablabla".byterindex(/^/).should == 1 + "b\nlablabla".byterindex(/^/).should == 2 + end + "blablabla".byterindex(/$/).should == 9 + + "blablabla".byterindex(/.l./).should == 6 + end + + it "starts the search at the given offset" do + "blablabla".byterindex(/.{0}/, 5).should == 5 + "blablabla".byterindex(/.{1}/, 5).should == 5 + "blablabla".byterindex(/.{2}/, 5).should == 5 + "blablabla".byterindex(/.{3}/, 5).should == 5 + "blablabla".byterindex(/.{4}/, 5).should == 5 + + "blablabla".byterindex(/.{0}/, 3).should == 3 + "blablabla".byterindex(/.{1}/, 3).should == 3 + "blablabla".byterindex(/.{2}/, 3).should == 3 + "blablabla".byterindex(/.{5}/, 3).should == 3 + "blablabla".byterindex(/.{6}/, 3).should == 3 + + "blablabla".byterindex(/.l./, 0).should == 0 + "blablabla".byterindex(/.l./, 1).should == 0 + "blablabla".byterindex(/.l./, 2).should == 0 + "blablabla".byterindex(/.l./, 3).should == 3 + + "blablablax".byterindex(/.x/, 10).should == 8 + "blablablax".byterindex(/.x/, 9).should == 8 + "blablablax".byterindex(/.x/, 8).should == 8 + + "blablablax".byterindex(/..x/, 10).should == 7 + "blablablax".byterindex(/..x/, 9).should == 7 + "blablablax".byterindex(/..x/, 8).should == 7 + "blablablax".byterindex(/..x/, 7).should == 7 + + not_supported_on :opal do + "blablabla\n".byterindex(/\Z/, 9).should == 9 + end + end + + it "starts the search at offset + self.length if offset is negative" do + str = "blablabla" + + ["bl", "bla", "blab", "la", "lab", "ab", ""].each do |needle| + (-str.length .. -1).each do |offset| + str.byterindex(needle, offset).should == + str.byterindex(needle, offset + str.length) + end + end + end + + it "returns nil if the substring isn't found" do + "blablabla".byterindex(/BLA/).should == nil + "blablabla".byterindex(/.{10}/).should == nil + "blablablax".byterindex(/.x/, 7).should == nil + "blablablax".byterindex(/..x/, 6).should == nil + + not_supported_on :opal do + "blablabla".byterindex(/\Z/, 5).should == nil + "blablabla".byterindex(/\z/, 5).should == nil + "blablabla\n".byterindex(/\z/, 9).should == nil + end + end + + not_supported_on :opal do + it "supports \\G which matches at the given start offset" do + "helloYOU.".byterindex(/YOU\G/, 8).should == 5 + "helloYOU.".byterindex(/YOU\G/).should == nil + + idx = "helloYOUall!".index("YOU") + re = /YOU.+\G.+/ + # The # marks where \G will match. + [ + ["helloYOU#all.", nil], + ["helloYOUa#ll.", idx], + ["helloYOUal#l.", idx], + ["helloYOUall#.", idx], + ["helloYOUall.#", nil] + ].each do |i| + start = i[0].index("#") + str = i[0].delete("#") + + str.byterindex(re, start).should == i[1] + end + end + end + + it "tries to convert start_offset to an integer" do + obj = mock('5') + def obj.to_int() 5 end + "str".byterindex(/../, obj).should == 1 + + obj = mock('5') + def obj.respond_to?(arg, *) true end + def obj.method_missing(*args); 5; end + "str".byterindex(/../, obj).should == 1 + end + + it "raises a TypeError when given offset is nil" do + -> { "str".byterindex(/../, nil) }.should raise_error(TypeError) + end + + it "returns the reverse byte index of a multibyte character" do + "ありがりがとう".byterindex("が").should == 12 + "ありがりがとう".byterindex(/が/).should == 12 + end + + it "returns the character index before the finish" do + "ありがりがとう".byterindex("が", 9).should == 6 + "ありがりがとう".byterindex(/が/, 9).should == 6 + end + end +end |