Fix test and update Travis config

.travis.yml

@@ -1,9 +1,10 @@
 language: go
 
 go:
-  - 1.5
-  - 1.6
-  - 1.7
+  - 1.9
+  - "1.10"
+  - "1.11"
+  - "1.12"
   - tip
 
 script: go test -v -race -coverprofile=coverage.txt -covermode=atomic .

id.go

@@ -7,16 +7,17 @@ import (
 )
 
 var localID [9]byte
+var defaultID = [9]byte{'D', 'e', 'f', 'a', 'u', 'l', 't', 'I', 'D'}
 
 // Initializes the value for the local process run identifier
 func init() {
 	buf, err := GetBytes(9)
 	if err != nil {
-		localID = [9]byte{'D', 'e', 'f', 'a', 'u', 'l', 't', 'I', 'D'}
+		localID = defaultID
 	} else {
 		_, err = io.ReadFull(bytes.NewBuffer(buf), localID[:])
 		if err != nil {
-			localID = [9]byte{'D', 'e', 'f', 'a', 'u', 'l', 't', 'I', 'D'}
+			localID = defaultID
 		}
 	}
 }

id_test.go

@@ -3,6 +3,7 @@ package gorand
 import (
 	"encoding/hex"
 	"testing"
+	"time"
 )
 
 func TestID(t *testing.T) {
@@ -17,13 +18,16 @@ func TestID(t *testing.T) {
 }
 
 func TestIDOrder(t *testing.T) {
-	ids := make([][64]byte, 100000)
-	for i := 0; i < 100000; i++ {
+	ids := make([][64]byte, 10000)
+	for i := 0; i < 10000; i++ {
 		id, err := ID()
 		if err != nil {
 			t.Fatal(err)
 		}
 		ids[i] = id
+
+		// Force time change for testing purposes
+		time.Sleep(1 * time.Millisecond)
 	}
 
 	for i, v := range ids {