Maintain history; use state

state/state_test.go

@@ -1,6 +1,7 @@
 package state
 
 import (
+	"regexp"
 	"testing"
 
 	. "github.com/smartystreets/goconvey/convey"
@@ -48,6 +49,24 @@ func TestState(t *testing.T) {
 			})
 		})
 
+		Convey("You can maintain a history of all actions", func() {
+			s.Flag()
+			s.Mark()
+			s.Clear()
+			s.CursorSectionRight()
+			s.CursorSectionLeft()
+			s.CursorSectionDown()
+			s.CursorSectionUp()
+			s.CursorCellRight()
+			s.CursorCellLeft()
+			s.CursorCellDown()
+			s.CursorCellUp()
+
+			matches, err := regexp.Match("gogogogogram 2 2:\n(i\\(\\d,\\d\\)[\b\x01]{4}){4}fmcRLDUrldu", []byte(s.History()))
+			So(matches, ShouldBeTrue)
+			So(err, ShouldBeNil)
+		})
+
 		Convey("You can complete sections and clear portions of the board", func() {
 			s.cells.vivify(Point{0, 0})
 			s.cells.vivify(Point{2, 0})