ci: modify travis file

.travis.yml

@@ -1,30 +1,22 @@
-os:
-  - linux
-
 language: go
 
 go:
-  - 1.11.x
+- '1.12'
 
 env:
   global:
-    - GOTFLAGS="-race"
-  matrix:
-    - BUILD_DEPTYPE=gomod
-
+    - GO111MODULE=on
 
-# disable travis install
 install:
-  - true
+- go mod download
 
-script:
-  - bash <(curl -s https://raw.githubusercontent.com/ipfs/ci-helpers/master/travis-ci/run-standard-tests.sh)
+before_script:
+- go vet ./...
+- go build ./...
+- go test -run xxxx ./...
 
+script:
+- go test -race -short -coverprofile=coverage.txt ./...
 
-cache:
-  directories:
-    - $GOPATH/pkg/mod
-    - $HOME/.cache/go-build
-
-notifications:
-  email: false
+after_success:
+- bash <(curl -s https://codecov.io/bash)