l.Info("info", "a", []Attr{Int("i", 1)})
	check(`level=INFO msg=info a.i=1`)

	l.Info("info", "a", GroupValue(Int("i", 1)))
	check(`level=INFO msg=info a.i=1`)
}

func TestConnections(t *testing.T) {
	var logbuf, slogbuf bytes.Buffer

	// Revert any changes to the default logger. This is important because other
	// tests might change the default logger using SetDefault. Also ensure we