Simplify return values

.travis.yml

@@ -9,4 +9,4 @@ go:
 install:
  - export PATH=$PATH:$HOME/gopath/bin
 script:
- - go test
+ - go test -v -race

authorization.go

@@ -17,14 +17,10 @@ func (c *Client) GetAuthorization(authID string) (*Authorization, error) {
 	}
 
 	auth := &Authorization{}
-
-	if err = c.SendWithAuth(req, auth); err != nil {
+	err = c.SendWithAuth(req, auth)
 	return auth, err
 }
 
-	return auth, nil
-}
-
 // CaptureAuthorization captures and process an existing authorization.
 // To use this method, the original payment must have Intent set to "authorize"
 // Endpoint: POST /v1/payments/authorization/ID/capture
@@ -38,14 +34,10 @@ func (c *Client) CaptureAuthorization(authID string, a *Amount, isFinalCapture b
 	}
 
 	capture := &Capture{}
-
-	if err = c.SendWithAuth(req, capture); err != nil {
+	err = c.SendWithAuth(req, capture)
 	return capture, err
 }
 
-	return capture, nil
-}
-
 // VoidAuthorization voids a previously authorized payment
 // Endpoint: POST /v1/payments/authorization/ID/void
 func (c *Client) VoidAuthorization(authID string) (*Authorization, error) {
@@ -56,14 +48,10 @@ func (c *Client) VoidAuthorization(authID string) (*Authorization, error) {
 	}
 
 	auth := &Authorization{}
-
-	if err = c.SendWithAuth(req, auth); err != nil {
+	err = c.SendWithAuth(req, auth)
 	return auth, err
 }
 
-	return auth, nil
-}
-
 // ReauthorizeAuthorization reauthorize a Paypal account payment.
 // PayPal recommends to reauthorize payment after ~3 days
 // Endpoint: POST /v1/payments/authorization/ID/reauthorize
@@ -75,10 +63,6 @@ func (c *Client) ReauthorizeAuthorization(authID string, a *Amount) (*Authorizat
 	}
 
 	auth := &Authorization{}
-
-	if err = c.SendWithAuth(req, auth); err != nil {
+	err = c.SendWithAuth(req, auth)
 	return auth, err
 }
-
-	return auth, nil
-}

client.go

@@ -52,26 +52,22 @@ func (c *Client) GetAccessToken() (*TokenResponse, error) {
 }
 
 // SetHTTPClient sets *http.Client to current client
-func (c *Client) SetHTTPClient(client *http.Client) error {
+func (c *Client) SetHTTPClient(client *http.Client) {
 	c.Client = client
-	return nil
 }
 
 // SetAccessToken sets saved token to current client
-func (c *Client) SetAccessToken(token string) error {
+func (c *Client) SetAccessToken(token string) {
 	c.Token = &TokenResponse{
 		Token: token,
 	}
 	c.tokenExpiresAt = time.Time{}
-
-	return nil
 }
 
 // SetLog will set/change the output destination.
 // If log file is set paypalsdk will log all requests and responses to this Writer
-func (c *Client) SetLog(log io.Writer) error {
+func (c *Client) SetLog(log io.Writer) {
 	c.Log = log
-	return nil
 }
 
 // Send makes a request to the API, the response body will be
@@ -112,20 +108,18 @@ func (c *Client) Send(req *http.Request, v interface{}) error {
 		return errResp
 	}
 
-	if v != nil {
-		if w, ok := v.(io.Writer); ok {
-			io.Copy(w, resp.Body)
-		} else {
-			err = json.NewDecoder(resp.Body).Decode(v)
-			if err != nil {
-				return err
-			}
-		}
+	if v == nil {
+		return nil
 	}
 
+	if w, ok := v.(io.Writer); ok {
+		io.Copy(w, resp.Body)
 		return nil
 	}
 
+	return json.NewDecoder(resp.Body).Decode(v)
+}
+
 // SendWithAuth makes a request to the API and apply OAuth2 header automatically.
 // If the access token soon to be expired or already expired, it will try to get a new one before
 // making the main request