1 files changed, 104 insertions, 0 deletions
diff --git a/spec/ruby/core/matchdata/byteend_spec.rb b/spec/ruby/core/matchdata/byteend_spec.rb
new file mode 100644
index 0000000000..e77cbf8b0d
--- /dev/null
+++ b/spec/ruby/core/matchdata/byteend_spec.rb
@@ -0,0 +1,104 @@
+require_relative '../../spec_helper'
+
+ruby_version_is "3.4" do
+  describe "MatchData#byteend" do
+    context "when passed an integer argument" do
+      it "returns the byte-based offset of the end of the nth element" do
+        match_data = /(.)(.)(\d+)(\d)/.match("THX1138.")
+        match_data.byteend(0).should == 7
+        match_data.byteend(2).should == 3
+      end
+
+      it "returns nil when the nth match isn't found" do
+        match_data = /something is( not)? (right)/.match("something is right")
+        match_data.byteend(1).should == nil
+      end
+
+      it "returns the byte-based offset for multi-byte strings" do
+        match_data = /(.)(.)(\d+)(\d)/.match("TñX1138.")
+        match_data.byteend(0).should == 8
+        match_data.byteend(2).should == 4
+      end
+
+      not_supported_on :opal do
+        it "returns the byte-based offset for multi-byte strings with unicode regexp" do
+          match_data = /(.)(.)(\d+)(\d)/u.match("TñX1138.")
+          match_data.byteend(0).should == 8
+          match_data.byteend(2).should == 4
+        end
+      end
+
+      it "tries to convert the passed argument to an Integer using #to_int" do
+        obj = mock('to_int')
+        obj.should_receive(:to_int).and_return(2)
+
+        match_data = /(.)(.)(\d+)(\d)/.match("THX1138.")
+        match_data.byteend(obj).should == 3
+      end
+    end
+
+    context "when passed a String argument" do
+      it "return the byte-based offset of the start of the named capture" do
+        match_data = /(?<a>.)(.)(?<b>\d+)(\d)/.match("THX1138.")
+        match_data.byteend("a").should == 2
+        match_data.byteend("b").should == 6
+      end
+
+      it "returns the byte-based offset for multi byte strings" do
+        match_data = /(?<a>.)(.)(?<b>\d+)(\d)/.match("TñX1138.")
+        match_data.byteend("a").should == 3
+        match_data.byteend("b").should == 7
+      end
+
+      not_supported_on :opal do
+        it "returns the byte-based offset for multi byte strings with unicode regexp" do
+          match_data = /(?<a>.)(.)(?<b>\d+)(\d)/u.match("TñX1138.")
+          match_data.byteend("a").should == 3
+          match_data.byteend("b").should == 7
+        end
+      end
+
+      it "returns the byte-based offset for the farthest match when multiple named captures use the same name" do
+        match_data = /(?<a>.)(.)(?<a>\d+)(\d)/.match("THX1138.")
+        match_data.byteend("a").should == 6
+      end
+
+      it "returns the byte-based offset for multi-byte names" do
+        match_data = /(?<æ>.)(.)(?<b>\d+)(\d)/.match("THX1138.")
+        match_data.byteend("æ").should == 2
+      end
+    end
+
+    context "when passed a Symbol argument" do
+      it "return the byte-based offset of the start of the named capture" do
+        match_data = /(?<a>.)(.)(?<b>\d+)(\d)/.match("THX1138.")
+        match_data.byteend(:a).should == 2
+        match_data.byteend(:b).should == 6
+      end
+
+      it "returns the byte-based offset for multi byte strings" do
+        match_data = /(?<a>.)(.)(?<b>\d+)(\d)/.match("TñX1138.")
+        match_data.byteend(:a).should == 3
+        match_data.byteend(:b).should == 7
+      end
+
+      not_supported_on :opal do
+        it "returns the byte-based offset for multi byte strings with unicode regexp" do
+          match_data = /(?<a>.)(.)(?<b>\d+)(\d)/u.match("TñX1138.")
+          match_data.byteend(:a).should == 3
+          match_data.byteend(:b).should == 7
+        end
+      end
+
+      it "returns the byte-based offset for the farthest match when multiple named captures use the same name" do
+        match_data = /(?<a>.)(.)(?<a>\d+)(\d)/.match("THX1138.")
+        match_data.byteend(:a).should == 6
+      end
+
+      it "returns the byte-based offset for multi-byte names" do
+        match_data = /(?<æ>.)(.)(?<b>\d+)(\d)/.match("THX1138.")
+        match_data.byteend(:æ).should == 2
+      end
+    end
+  end
+end