From 168b3ee7a4798e13e0eae65e6886849d65a0cf34 Mon Sep 17 00:00:00 2001
From: Pavel Karpy <carpawell@nspcc.ru>
Date: Tue, 12 Apr 2022 15:42:29 +0300
Subject: [PATCH] [#170] checksum: Add examples

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
---
 checksum/example_test.go | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 checksum/example_test.go

diff --git a/checksum/example_test.go b/checksum/example_test.go
new file mode 100644
index 00000000..42239f21
--- /dev/null
+++ b/checksum/example_test.go
@@ -0,0 +1,34 @@
+package checksum
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"fmt"
+	"math/rand"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/refs"
+)
+
+func ExampleCalculate() {
+	payload := []byte{0, 1, 2, 3, 4, 5, 6}
+	var cs Checksum
+
+	Calculate(&cs, SHA256, payload)
+	Calculate(&cs, TZ, payload)
+}
+
+func ExampleChecksum_WriteToV2() {
+	var (
+		csRaw [sha256.Size]byte
+		csV2  refs.Checksum
+		cs    Checksum
+	)
+
+	rand.Read(csRaw[:])
+	cs.SetSHA256(csRaw)
+
+	cs.WriteToV2(&csV2)
+
+	fmt.Println(bytes.Equal(cs.Value(), csV2.GetSum()))
+	// Output: true
+}