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Diffstat (limited to 'spec/ruby/core/matchdata/byteoffset_spec.rb')
-rw-r--r-- | spec/ruby/core/matchdata/byteoffset_spec.rb | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/spec/ruby/core/matchdata/byteoffset_spec.rb b/spec/ruby/core/matchdata/byteoffset_spec.rb new file mode 100644 index 0000000000..b27267fd0e --- /dev/null +++ b/spec/ruby/core/matchdata/byteoffset_spec.rb @@ -0,0 +1,95 @@ +require_relative '../../spec_helper' + +describe "MatchData#byteoffset" do + ruby_version_is "3.2" do + it "returns beginning and ending byte-based offset of whole matched substring for 0 element" do + m = /(.)(.)(\d+)(\d)/.match("THX1138.") + m.byteoffset(0).should == [1, 7] + end + + it "returns beginning and ending byte-based offset of n-th match, all the subsequent elements are capturing groups" do + m = /(.)(.)(\d+)(\d)/.match("THX1138.") + + m.byteoffset(2).should == [2, 3] + m.byteoffset(3).should == [3, 6] + m.byteoffset(4).should == [6, 7] + end + + it "accepts String as a reference to a named capture" do + m = /(?<f>foo)(?<b>bar)/.match("foobar") + + m.byteoffset("f").should == [0, 3] + m.byteoffset("b").should == [3, 6] + end + + it "accepts Symbol as a reference to a named capture" do + m = /(?<f>foo)(?<b>bar)/.match("foobar") + + m.byteoffset(:f).should == [0, 3] + m.byteoffset(:b).should == [3, 6] + end + + it "returns [nil, nil] if a capturing group is optional and doesn't match" do + m = /(?<x>q..)?/.match("foobarbaz") + + m.byteoffset("x").should == [nil, nil] + m.byteoffset(1).should == [nil, nil] + end + + it "returns correct beginning and ending byte-based offset for multi-byte strings" do + m = /\A\u3042(.)(.)?(.)\z/.match("\u3042\u3043\u3044") + + m.byteoffset(1).should == [3, 6] + m.byteoffset(3).should == [6, 9] + end + + it "returns [nil, nil] if a capturing group is optional and doesn't match for multi-byte string" do + m = /\A\u3042(.)(.)?(.)\z/.match("\u3042\u3043\u3044") + + m.byteoffset(2).should == [nil, nil] + end + + it "converts argument into integer if is not String nor Symbol" do + m = /(?<f>foo)(?<b>bar)/.match("foobar") + + obj = Object.new + def obj.to_int; 2; end + + m.byteoffset(1r).should == [0, 3] + m.byteoffset(1.1).should == [0, 3] + m.byteoffset(obj).should == [3, 6] + end + + it "raises IndexError if there is no group with the provided name" do + m = /(?<f>foo)(?<b>bar)/.match("foobar") + + -> { + m.byteoffset("y") + }.should raise_error(IndexError, "undefined group name reference: y") + + -> { + m.byteoffset(:y) + }.should raise_error(IndexError, "undefined group name reference: y") + end + + it "raises IndexError if index is out of bounds" do + m = /(?<f>foo)(?<b>bar)/.match("foobar") + + -> { + m.byteoffset(-1) + }.should raise_error(IndexError, "index -1 out of matches") + + -> { + m.byteoffset(3) + }.should raise_error(IndexError, "index 3 out of matches") + end + + it "raises TypeError if can't convert argument into Integer" do + m = /(?<f>foo)(?<b>bar)/.match("foobar") + + -> { + m.byteoffset([]) + }.should raise_error(TypeError, "no implicit conversion of Array into Integer") + end + end +end |