From fafe0213c9022f298ec391c7907ed92762fbcd1b Mon Sep 17 00:00:00 2001
From: Rose Hogenson <rosehogenson@posteo.net>
Date: Sun, 25 Jan 2026 07:03:15 -0800
Subject: Add a benchmark

---
 oae2_test.go | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

(limited to 'oae2_test.go')

diff --git a/oae2_test.go b/oae2_test.go
index e326ef2..b60be24 100644
--- a/oae2_test.go
+++ b/oae2_test.go
@@ -312,3 +312,50 @@ func FuzzSeekCurrent(f *testing.F) {
 		}
 	})
 }
+
+func encrypt(buf *bytes.Buffer, data []byte) error {
+	w := NewWriter(buf, []byte("asdf"), 4*1024*1024)
+	if _, err := w.Write(data); err != nil {
+		return err
+	}
+	return w.Close()
+}
+
+func BenchmarkWriter(b *testing.B) {
+	data := make([]byte, 10*1024*1024)
+	outBuffer := bytes.NewBuffer(make([]byte, 0, 32+3*16+len(data)))
+	for b.Loop() {
+		outBuffer.Reset()
+		if err := encrypt(outBuffer, data); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func decrypt(out []byte, data []byte) error {
+	r := NewReader(bytes.NewReader(data), []byte("asdf"), 4*1024*1024)
+	_, err := io.ReadFull(r, out)
+	return err
+}
+
+func BenchmarkReader(b *testing.B) {
+	const (
+		segmentSize = 4 * 1024 * 1024
+		password    = "asdf"
+	)
+	data := make([]byte, 10*1024*1024)
+	encryptedBuf := new(bytes.Buffer)
+	w := NewWriter(encryptedBuf, []byte(password), segmentSize)
+	if _, err := w.Write(data); err != nil {
+		b.Fatal(err)
+	}
+	if err := w.Close(); err != nil {
+		b.Fatal(err)
+	}
+	encryptedData := encryptedBuf.Bytes()
+	for b.Loop() {
+		if err := decrypt(data, encryptedData); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
-- 
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