update travis

Author: LyricTian

.travis.yml

@@ -7,7 +7,7 @@ before_install:
   - go get -t -v ./...
 
 script:
-  - go test ./... -race -coverprofile=coverage.txt -covermode=atomic
+  - go test -race -coverprofile=coverage.txt -covermode=atomic -coverpkg=./... ./...
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)