anchor.diff:  	"regexp"
   	"strconv"
   	"strings"
  +	"sync"
   	"testing"
   	"time"
   
  
positive.code: 		seed := rand.Int63()
  		s := rand.NewSource(seed)
  		vcrSource := VcrSource{seed: seed, source: s}
  		sources[t.Name()] = vcrSource
  		return &vcrSource, nil
  	case "REPLAYING":
  		seed, err := readSeedFromFile(vcrSeedFile(path, t.Name()))
  
negative.code: 			}
  		}
  		// Clean up test config
  		mutex.Lock()
  		delete(configs, t.Name())
  		delete(sources, t.Name())
  		mutex.Unlock()
  	}
  }
  
  