add test of compiling protobuf file

Author: drmingdrmer

Diff for: .travis.yml

@@ -12,6 +12,9 @@ jobs:
     # paxoskv/impl.go:12:2: no required module provides package golang.org/x/net/context; try 'go mod tidy' to add it
     allow_failures:
         - go: tip
-
+install:
+    - ./install-protoc.sh
+    - go get github.com/golang/protobuf/protoc-gen-go
 script:
+    - make gen
     - go test ./...

Diff for: Makefile

@@ -1,3 +1,4 @@
+
 gen: gen-go
 
 gen-go:

Diff for: install-protoc.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+PROTOBUF_VERSION=3.10.0
+PROTOC_FILENAME=protoc-${PROTOBUF_VERSION}-linux-x86_64.zip
+
+(
+
+cd /home/travis
+
+wget https://github.com/google/protobuf/releases/download/v$PROTOBUF_VERSION/$PROTOC_FILENAME
+unzip $PROTOC_FILENAME
+bin/protoc --version
+
+)