closes #146

flags.go

@@ -196,14 +196,13 @@ type randomSeed struct {
 
 // Choose randomly assigns a convenient pseudo-random seed value.
 // The resulting seed will be between `1-99999` for later ease of specification.
-func (rs *randomSeed) choose() {
-	r := rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
-	*rs.ref = r.Int63n(99998) + 1
+func makeRandomSeed() int64 {
+	return rand.New(rand.NewSource(time.Now().UTC().UnixNano())).Int63n(99998) + 1
 }
 
 func (rs *randomSeed) Set(s string) error {
 	if s == "true" {
-		rs.choose()
+		*rs.ref = makeRandomSeed()
 		return nil
 	}
 

run.go

@@ -145,11 +145,17 @@ func RunWithOptions(suite string, contextInitializer func(suite *Suite), opt Opt
 		return exitOptionError
 	}
 
+	// user may have specified -1 option to create random seed
+	randomize := opt.Randomize
+	if randomize == -1 {
+		randomize = makeRandomSeed()
+	}
+
 	r := runner{
 		fmt:           formatter(suite, output),
 		initializer:   contextInitializer,
 		features:      features,
-		randomSeed:    opt.Randomize,
+		randomSeed:    randomize,
 		stopOnFailure: opt.StopOnFailure,
 		strict:        opt.Strict,
 	}