Go - struct instance

func TestLoadConfig(t *testing.T) {
    var config Config
    fmt.Printf("%+v", config)
    require.Nil(t, config)
}

=== RUN   TestLoadConfig
{Environment:}
    /zdata/Github/orders-api/util/config_test.go:13:
        	Error Trace:	/zdata/Github/orders-api/util/config_test.go:13
        	Error:      	Expected nil, but got: util.Config{Environment:""}
        	Test:       	TestLoadConfig
--- FAIL: TestLoadConfig (0.00s)

func TestLoadConfig(t *testing.T) {
    var config Config
    fmt.Printf("%+v\n", config)
    require.Empty(t, config)
}

=== RUN   TestLoadConfig
{Environment:}
--- PASS: TestLoadConfig (0.00s)
PASS
ok  	github.com/ZhangZhihuiAAA/orders-api/util	0.003s