Merge pull request digitalocean#100 from tbalthazar/issue-99

Changing the User Agent doesn't work as expected

godo.go

@@ -224,7 +224,7 @@ func (c *Client) NewRequest(method, urlStr string, body interface{}) (*http.Requ
 
 	req.Header.Add("Content-Type", mediaType)
 	req.Header.Add("Accept", mediaType)
-	req.Header.Add("User-Agent", userAgent)
+	req.Header.Add("User-Agent", c.UserAgent)
 	return req, nil
 }
 

godo_test.go

@@ -188,6 +188,22 @@ func TestNewRequest_badURL(t *testing.T) {
 	testURLParseError(t, err)
 }
 
+func TestNewRequest_withCustomUserAgent(t *testing.T) {
+	ua := "testing"
+	c, err := New(nil, SetUserAgent(ua))
+
+	if err != nil {
+		t.Fatalf("New() unexpected error: %v", err)
+	}
+
+	req, _ := c.NewRequest("GET", "/foo", nil)
+
+	expected := fmt.Sprintf("%s+%s", ua, userAgent)
+	if got := req.Header.Get("User-Agent"); got != expected {
+		t.Errorf("New() UserAgent = %s; expected %s", got, expected)
+	}
+}
+
 func TestDo(t *testing.T) {
 	setup()
 	defer teardown()