var buf bytes.Buffer
			for pb.Next() {
				// The loop body is executed b.N times total across all goroutines.
				buf.Reset()
				templ.Execute(&buf, "World")
			}
		})
	})
}

func TestReportMetric(t *testing.T) {
	res := testing.Benchmark(func(b *testing.B) {
		b.ReportMetric(12345, "ns/op")
		b.ReportMetric(0.2, "frobs/op")
	})
	// Test built-in overriding.
	if res.NsPerOp() != 12345 {