使用相对于项目地址的配置文件路径以便于单元测试

go.mod

@@ -12,6 +12,7 @@ require (
 	github.com/jmoiron/sqlx v1.3.5
 	github.com/milvus-io/milvus-sdk-go/v2 v2.2.1
 	github.com/spf13/viper v1.15.0
+	github.com/stretchr/testify v1.8.1
 )
 
 require (
@@ -23,6 +24,7 @@ require (
 	github.com/alibabacloud-go/tea-xml v1.1.2 // indirect
 	github.com/aliyun/credentials-go v1.1.2 // indirect
 	github.com/clbanning/mxj/v2 v2.5.6 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/elastic/elastic-transport-go/v8 v8.3.0 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
@@ -35,6 +37,7 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/sizeofint/webp-animation v0.0.0-20190207194838-b631dc900de9 // indirect
 	github.com/spf13/afero v1.9.3 // indirect
 	github.com/spf13/cast v1.5.0 // indirect