Code by Martin

    m = #/({areaCode}\d{3})-({localNumber}\d{5})/ =~ number
 
    describe("start",
      it("should return the start index of group zero, which is the whole group",
        (#/foo/ =~ "foobar") start should == 0
        (#/foo/ =~ "abcfoobar") start should == 3
 
        (#/foo/ =~ "foobar") start(0) should == 0
        (#/foo/ =~ "abcfoobar") start(0) should == 3
      )
 
      it("should return the start index of another group",
        (#/(..) (..) (..)/ =~ "fooab cd efbar") start(2) should == 6
      )
 
      it("should return the start index from the name of a named group",
        (#/({one}..) ({two}..) ({three}..)/ =~ "fooab cd efbar") start(:two) should == 6
      )
 
      it("should return -1 for a group that wasn't matched",
        (#/(..)((..))?/ =~ "ab") start(2) should == -1
        (#/({no}..)(({way}..))?/ =~ "ab") start(:way) should == -1
 
        (#/(..)((..))?/ =~ "ab") start(10) should == -1
        (#/({no}..)(({way}..))?/ =~ "ab") start(:blarg) should == -1
      )
 
      it("should validate type of receiver",
        Regexp Match should checkReceiverTypeOn(:start)
      )
    )
 
    x = #/bla #{"foo"} bar/