Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 30 insertions, 0 deletions

diff --git a/spec/rubyspec/core/matchdata/offset_spec.rb b/spec/rubyspec/core/matchdata/offset_spec.rb
new file mode 100644
index 0000000000..6ddb56c1a7
--- /dev/null
+++ b/spec/rubyspec/core/matchdata/offset_spec.rb
@@ -0,0 +1,30 @@
+# -*- encoding: utf-8 -*-
+
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "MatchData#offset" do
+  it "returns a two element array with the begin and end of the nth match" do
+    match_data = /(.)(.)(\d+)(\d)/.match("THX1138.")
+    match_data.offset(0).should == [1, 7]
+    match_data.offset(4).should == [6, 7]
+  end
+
+  it "returns [nil, nil] when the nth match isn't found" do
+    match_data = /something is( not)? (right)/.match("something is right")
+    match_data.offset(1).should == [nil, nil]
+  end
+
+  it "returns the offset for multi byte strings" do
+    match_data = /(.)(.)(\d+)(\d)/.match("TñX1138.")
+    match_data.offset(0).should == [1, 7]
+    match_data.offset(4).should == [6, 7]
+  end
+
+  not_supported_on :opal do
+    it "returns the offset for multi byte strings with unicode regexp" do
+      match_data = /(.)(.)(\d+)(\d)/u.match("TñX1138.")
+      match_data.offset(0).should == [1, 7]
+      match_data.offset(4).should == [6, 7]
+    end
+  end
+end