diff --git a/.travis.yml b/.travis.yml
index 1b4ade0..b87eb9d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: go
 go:
- - 1.4
+ - 1.5
 install:
  - export PATH=$PATH:$HOME/gopath/bin
 script:
diff --git a/auth_test.go b/auth_test.go
index 4e3191d..8b58e6f 100644
--- a/auth_test.go
+++ b/auth_test.go
@@ -18,10 +18,14 @@ func TestGetAuthorization(t *testing.T) {
 	c.GetAccessToken()
 
 	a, err := c.GetAuthorization(testAuthID)
-
 	if err != nil || a.ID != testAuthID {
 		t.Errorf("GetAuthorization failed for ID=" + testAuthID)
 	}
+
+	a, err = c.GetAuthorization(testFakeAuthID)
+	if err == nil {
+		t.Errorf("GetAuthorization must return error for ID=" + testFakeAuthID)
+	}
 }
 
 func TestCaptureAuthorization(t *testing.T) {
diff --git a/client_test.go b/client_test.go
index 309feda..44e1e20 100644
--- a/client_test.go
+++ b/client_test.go
@@ -1,6 +1,7 @@
 package paypalsdk
 
 import (
+	"fmt"
 	"testing"
 )
 
@@ -8,7 +9,9 @@ import (
 var testClientID = "AZgwu4yt5Ba0gyTu1dGBH3txHCJbMuFNvrmQxBaQbfDncDiCs6W_rwJD8Ir-0pZrN-_eq7n9zVd8Y-5f"
 var testSecret = "EBzA1wRl5t73OMugOieDj_tI3vihfJmGl47ukQT-cpctooIzDu0K7IPESNC0cKodlLSOXzwI8qXSM0rd"
 var testAuthID = "2DC87612EK520411B"
+var testFakeAuthID = "FAKE-2DC87612EK520411B"
 var testOrderID = "O-4J082351X3132253H"
+var testFakeOrderID = "FAKE-O-4J082351X3132253H"
 var testSaleID = "4CF18861HF410323U"
 var testPaymentID = "PAY-5YK922393D847794YKER7MUI"
 var testPayerID = "CR87QHB7JTRSC"
@@ -17,6 +20,8 @@ func TestNewClient(t *testing.T) {
 	_, err := NewClient("", "", "")
 	if err == nil {
 		t.Errorf("All arguments are required in NewClient()")
+	} else {
+		fmt.Println(err.Error())
 	}
 
 	_, err = NewClient(testClientID, testSecret, APIBaseSandBox)
diff --git a/order_test.go b/order_test.go
index 0637710..14e9870 100644
--- a/order_test.go
+++ b/order_test.go
@@ -10,10 +10,14 @@ func TestGetOrder(t *testing.T) {
 	c.GetAccessToken()
 
 	o, err := c.GetOrder(testOrderID)
-
 	if err != nil || o.ID != testOrderID {
 		t.Errorf("GetOrder failed for ID=" + testOrderID)
 	}
+
+	o, err = c.GetOrder(testFakeOrderID)
+	if err == nil {
+		t.Errorf("GetOrder must return error for ID=" + testFakeOrderID)
+	}
 }
 
 func TestAuthorizeOrder(t *testing.T) {