func TestDisableTag(t *testing.T) {
log, buf := createLogger()
log.Enable("footag")
log.Print("footag", "foo")
compare(t, buf, "foo\n")
log.Disable("footag")
log.Print("footag", "foo")
compare(t, buf, "")
}
func TestMultitag(t *testing.T) {
log, buf := createLogger()
log.Enable("footag")
log.Enable("bartag")
log.Print("notag, other", "foo")
compare(t, buf, "")
log.Print("notag, footag", "foo")
compare(t, buf, "foo\n")
log.Print("footag, bartag", "foo")
compare(t, buf, "foo\n")
log.Print("footag,bartag", "foo")
compare(t, buf, "foo\n")
log.Disable("footag,bartag")
log.Print("footag", "foo")
compare(t, buf, "")
log.Print("bartag", "foo")
compare(t, buf, "")
}