internal/deepprint: add BenchmarkHash

deepprint currently accounts for 15% of allocs in tailscaled.
This is a useful benchmark to have.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/internal/deepprint/deepprint_test.go b/internal/deepprint/deepprint_test.go
index d7576f27a..0b2d25423 100644
--- a/internal/deepprint/deepprint_test.go
+++ b/internal/deepprint/deepprint_test.go
@@ -62,3 +62,11 @@ func getVal() []interface{} {
 		},
 	}
 }
+
+func BenchmarkHash(b *testing.B) {
+	b.ReportAllocs()
+	v := getVal()
+	for i := 0; i < b.N; i++ {
+		Hash(v)
+	}
+}