diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..1b4ade0
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,7 @@
+language: go
+go:
+ - 1.4
+install:
+ - export PATH=$PATH:$HOME/gopath/bin
+script:
+ - go test -v
diff --git a/client.go b/client.go
index b523f06..e603c21 100644
--- a/client.go
+++ b/client.go
@@ -4,6 +4,7 @@ import (
     "encoding/json"
     "io/ioutil"
     "net/http"
+    "errors"
     "bytes"
     "time"
     "fmt"
@@ -12,6 +13,10 @@ import (
 
 // NewClient returns new Client struct
 func NewClient(clientID string, secret string, APIBase string) (*Client, error) {
+    if clientID == "" || secret == "" || APIBase == "" {
+        return &Client{}, errors.New("ClientID, Secret and APIBase are required to create a Client")
+    }
+
     return &Client{
         &http.Client{},
         clientID,
diff --git a/client_test.go b/client_test.go
new file mode 100644
index 0000000..6f42818
--- /dev/null
+++ b/client_test.go
@@ -0,0 +1,12 @@
+package paypalsdk
+
+import (
+    "testing"
+)
+
+func TestNewClient(t *testing.T) {
+    _, err := NewClient("", "", "")
+    if err == nil {
+        t.Errorf("All arguments are required in NewClient()")
+    }
+}