func TestMetricsCopy(t *testing.T) {
t1 := time.Now()
want := report.Metrics{
"metric1": report.MakeMetric().Add(t1, 0.1),
}
delete(want.Copy(), "metric1") // Modify a copy
have := want.Copy() // Check the original wasn't affected
if !reflect.DeepEqual(want, have) {
t.Errorf("diff: %s", test.Diff(want, have))
}
}
