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Diffstat (limited to 'spec/ruby/core/string/byteindex_spec.rb')
| -rw-r--r-- | spec/ruby/core/string/byteindex_spec.rb | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/spec/ruby/core/string/byteindex_spec.rb b/spec/ruby/core/string/byteindex_spec.rb new file mode 100644 index 0000000000..47c7be1029 --- /dev/null +++ b/spec/ruby/core/string/byteindex_spec.rb @@ -0,0 +1,304 @@ +# -*- encoding: utf-8 -*- +require_relative '../../spec_helper' +require_relative 'fixtures/classes' +require_relative 'shared/byte_index_common.rb' + +describe "String#byteindex" do + ruby_version_is "3.2" do + it "calls #to_str to convert the first argument" do + char = mock("string index char") + char.should_receive(:to_str).and_return("b") + "abc".byteindex(char).should == 1 + end + + it "calls #to_int to convert the second argument" do + offset = mock("string index offset") + offset.should_receive(:to_int).and_return(1) + "abc".byteindex("c", offset).should == 2 + end + + it "does not raise IndexError when byte offset is correct or on string boundary" do + "わ".byteindex("").should == 0 + "わ".byteindex("", 0).should == 0 + "わ".byteindex("", 3).should == 3 + end + + it_behaves_like :byte_index_common, :byteindex + end +end + +describe "String#byteindex with String" do + ruby_version_is "3.2" do + it "behaves the same as String#byteindex(char) for one-character strings" do + "blablabla hello cruel world...!".split("").uniq.each do |str| + chr = str[0] + str.byteindex(str).should == str.byteindex(chr) + + 0.upto(str.size + 1) do |start| + str.byteindex(str, start).should == str.byteindex(chr, start) + end + + (-str.size - 1).upto(-1) do |start| + str.byteindex(str, start).should == str.byteindex(chr, start) + end + end + end + + it "returns the byteindex of the first occurrence of the given substring" do + "blablabla".byteindex("").should == 0 + "blablabla".byteindex("b").should == 0 + "blablabla".byteindex("bla").should == 0 + "blablabla".byteindex("blabla").should == 0 + "blablabla".byteindex("blablabla").should == 0 + + "blablabla".byteindex("l").should == 1 + "blablabla".byteindex("la").should == 1 + "blablabla".byteindex("labla").should == 1 + "blablabla".byteindex("lablabla").should == 1 + + "blablabla".byteindex("a").should == 2 + "blablabla".byteindex("abla").should == 2 + "blablabla".byteindex("ablabla").should == 2 + end + + it "treats the offset as a byteindex" do + "aaaaa".byteindex("a", 0).should == 0 + "aaaaa".byteindex("a", 2).should == 2 + "aaaaa".byteindex("a", 4).should == 4 + end + + it "ignores string subclasses" do + "blablabla".byteindex(StringSpecs::MyString.new("bla")).should == 0 + StringSpecs::MyString.new("blablabla").byteindex("bla").should == 0 + StringSpecs::MyString.new("blablabla").byteindex(StringSpecs::MyString.new("bla")).should == 0 + end + + it "starts the search at the given offset" do + "blablabla".byteindex("bl", 0).should == 0 + "blablabla".byteindex("bl", 1).should == 3 + "blablabla".byteindex("bl", 2).should == 3 + "blablabla".byteindex("bl", 3).should == 3 + + "blablabla".byteindex("bla", 0).should == 0 + "blablabla".byteindex("bla", 1).should == 3 + "blablabla".byteindex("bla", 2).should == 3 + "blablabla".byteindex("bla", 3).should == 3 + + "blablabla".byteindex("blab", 0).should == 0 + "blablabla".byteindex("blab", 1).should == 3 + "blablabla".byteindex("blab", 2).should == 3 + "blablabla".byteindex("blab", 3).should == 3 + + "blablabla".byteindex("la", 1).should == 1 + "blablabla".byteindex("la", 2).should == 4 + "blablabla".byteindex("la", 3).should == 4 + "blablabla".byteindex("la", 4).should == 4 + + "blablabla".byteindex("lab", 1).should == 1 + "blablabla".byteindex("lab", 2).should == 4 + "blablabla".byteindex("lab", 3).should == 4 + "blablabla".byteindex("lab", 4).should == 4 + + "blablabla".byteindex("ab", 2).should == 2 + "blablabla".byteindex("ab", 3).should == 5 + "blablabla".byteindex("ab", 4).should == 5 + "blablabla".byteindex("ab", 5).should == 5 + + "blablabla".byteindex("", 0).should == 0 + "blablabla".byteindex("", 1).should == 1 + "blablabla".byteindex("", 2).should == 2 + "blablabla".byteindex("", 7).should == 7 + "blablabla".byteindex("", 8).should == 8 + "blablabla".byteindex("", 9).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.byteindex(needle, offset).should == + str.byteindex(needle, offset + str.length) + end + end + end + + it "returns nil if the substring isn't found" do + "blablabla".byteindex("B").should == nil + "blablabla".byteindex("z").should == nil + "blablabla".byteindex("BLA").should == nil + "blablabla".byteindex("blablablabla").should == nil + "blablabla".byteindex("", 10).should == nil + + "hello".byteindex("he", 1).should == nil + "hello".byteindex("he", 2).should == nil + "I’ve got a multibyte character.\n".byteindex("\n\n").should == nil + end + + it "returns the character byteindex of a multibyte character" do + "ありがとう".byteindex("が").should == 6 + end + + it "returns the character byteindex after offset" do + "われわれ".byteindex("わ", 3).should == 6 + "ありがとうありがとう".byteindex("が", 9).should == 21 + end + + it "returns the character byteindex after a partial first match" do + "</</h".byteindex("</h").should == 2 + end + + it "raises an Encoding::CompatibilityError if the encodings are incompatible" do + char = "れ".encode Encoding::EUC_JP + -> do + "あれ".byteindex(char) + end.should raise_error(Encoding::CompatibilityError) + end + + it "handles a substring in a superset encoding" do + 'abc'.dup.force_encoding(Encoding::US_ASCII).byteindex('é').should == nil + end + + it "handles a substring in a subset encoding" do + 'été'.byteindex('t'.dup.force_encoding(Encoding::US_ASCII)).should == 2 + end + end +end + +describe "String#byteindex with Regexp" do + ruby_version_is "3.2" do + it "behaves the same as String#byteindex(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.byteindex(regexp).should == str.byteindex(needle) + + 0.upto(str.size + 1) do |start| + str.byteindex(regexp, start).should == str.byteindex(needle, start) + end + + (-str.size - 1).upto(-1) do |start| + str.byteindex(regexp, start).should == str.byteindex(needle, start) + end + end + end + end + + it "returns the byteindex of the first match of regexp" do + "blablabla".byteindex(/bla/).should == 0 + "blablabla".byteindex(/BLA/i).should == 0 + + "blablabla".byteindex(/.{0}/).should == 0 + "blablabla".byteindex(/.{6}/).should == 0 + "blablabla".byteindex(/.{9}/).should == 0 + + "blablabla".byteindex(/.*/).should == 0 + "blablabla".byteindex(/.+/).should == 0 + + "blablabla".byteindex(/lab|b/).should == 0 + + not_supported_on :opal do + "blablabla".byteindex(/\A/).should == 0 + "blablabla".byteindex(/\Z/).should == 9 + "blablabla".byteindex(/\z/).should == 9 + "blablabla\n".byteindex(/\Z/).should == 9 + "blablabla\n".byteindex(/\z/).should == 10 + end + + "blablabla".byteindex(/^/).should == 0 + "\nblablabla".byteindex(/^/).should == 0 + "b\nablabla".byteindex(/$/).should == 1 + "bl\nablabla".byteindex(/$/).should == 2 + + "blablabla".byteindex(/.l./).should == 0 + end + + it "starts the search at the given offset" do + "blablabla".byteindex(/.{0}/, 5).should == 5 + "blablabla".byteindex(/.{1}/, 5).should == 5 + "blablabla".byteindex(/.{2}/, 5).should == 5 + "blablabla".byteindex(/.{3}/, 5).should == 5 + "blablabla".byteindex(/.{4}/, 5).should == 5 + + "blablabla".byteindex(/.{0}/, 3).should == 3 + "blablabla".byteindex(/.{1}/, 3).should == 3 + "blablabla".byteindex(/.{2}/, 3).should == 3 + "blablabla".byteindex(/.{5}/, 3).should == 3 + "blablabla".byteindex(/.{6}/, 3).should == 3 + + "blablabla".byteindex(/.l./, 0).should == 0 + "blablabla".byteindex(/.l./, 1).should == 3 + "blablabla".byteindex(/.l./, 2).should == 3 + "blablabla".byteindex(/.l./, 3).should == 3 + + "xblaxbla".byteindex(/x./, 0).should == 0 + "xblaxbla".byteindex(/x./, 1).should == 4 + "xblaxbla".byteindex(/x./, 2).should == 4 + + not_supported_on :opal do + "blablabla\n".byteindex(/\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.byteindex(needle, offset).should == + str.byteindex(needle, offset + str.length) + end + end + end + + it "returns nil if the substring isn't found" do + "blablabla".byteindex(/BLA/).should == nil + + "blablabla".byteindex(/.{10}/).should == nil + "blaxbla".byteindex(/.x/, 3).should == nil + "blaxbla".byteindex(/..x/, 2).should == nil + end + + it "returns nil if the Regexp matches the empty string and the offset is out of range" do + "ruby".byteindex(//, 12).should be_nil + end + + it "supports \\G which matches at the given start offset" do + "helloYOU.".byteindex(/\GYOU/, 5).should == 5 + "helloYOU.".byteindex(/\GYOU/).should == nil + + re = /\G.+YOU/ + # The # marks where \G will match. + [ + ["#hi!YOUall.", 0], + ["h#i!YOUall.", 1], + ["hi#!YOUall.", 2], + ["hi!#YOUall.", nil] + ].each do |spec| + + start = spec[0].byteindex("#") + str = spec[0].delete("#") + + str.byteindex(re, start).should == spec[1] + end + end + + it "converts start_offset to an integer via to_int" do + obj = mock('1') + obj.should_receive(:to_int).and_return(1) + "RWOARW".byteindex(/R./, obj).should == 4 + end + + it "returns the character byteindex of a multibyte character" do + "ありがとう".byteindex(/が/).should == 6 + end + + it "returns the character byteindex after offset" do + "われわれ".byteindex(/わ/, 3).should == 6 + end + + it "treats the offset as a byteindex" do + "われわわれ".byteindex(/わ/, 6).should == 6 + end + end +end |