1 files changed, 24 insertions, 0 deletions
diff --git a/spec/ruby/core/matchdata/regexp_spec.rb b/spec/ruby/core/matchdata/regexp_spec.rb
new file mode 100644
index 0000000000..7dcb0e62db
--- /dev/null
+++ b/spec/ruby/core/matchdata/regexp_spec.rb
@@ -0,0 +1,24 @@
+require_relative '../../spec_helper'
+
+describe "MatchData#regexp" do
+  it "returns a Regexp object" do
+    m = 'haystack'.match(/hay/)
+    m.regexp.should.instance_of?(Regexp)
+  end
+
+  it "returns the pattern used in the match" do
+    m = 'haystack'.match(/hay/)
+    m.regexp.should == /hay/
+  end
+
+  it "returns the same Regexp used to match" do
+    r = /hay/
+    m = 'haystack'.match(r)
+    m.regexp.object_id.should == r.object_id
+  end
+
+  it "returns a Regexp for the result of gsub(String)" do
+    'he[[o'.gsub('[', ']')
+    $~.regexp.should == /\[/
+  end
+end