From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- src/hash/example_test.go | 51 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 src/hash/example_test.go (limited to 'src/hash/example_test.go') diff --git a/src/hash/example_test.go b/src/hash/example_test.go new file mode 100644 index 0000000..f07b9aa --- /dev/null +++ b/src/hash/example_test.go @@ -0,0 +1,51 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package hash_test + +import ( + "bytes" + "crypto/sha256" + "encoding" + "fmt" + "log" +) + +func Example_binaryMarshaler() { + const ( + input1 = "The tunneling gopher digs downwards, " + input2 = "unaware of what he will find." + ) + + first := sha256.New() + first.Write([]byte(input1)) + + marshaler, ok := first.(encoding.BinaryMarshaler) + if !ok { + log.Fatal("first does not implement encoding.BinaryMarshaler") + } + state, err := marshaler.MarshalBinary() + if err != nil { + log.Fatal("unable to marshal hash:", err) + } + + second := sha256.New() + + unmarshaler, ok := second.(encoding.BinaryUnmarshaler) + if !ok { + log.Fatal("second does not implement encoding.BinaryUnmarshaler") + } + if err := unmarshaler.UnmarshalBinary(state); err != nil { + log.Fatal("unable to unmarshal hash:", err) + } + + first.Write([]byte(input2)) + second.Write([]byte(input2)) + + fmt.Printf("%x\n", first.Sum(nil)) + fmt.Println(bytes.Equal(first.Sum(nil), second.Sum(nil))) + // Output: + // 57d51a066f3a39942649cd9a76c77e97ceab246756ff3888659e6aa5a07f4a52 + // true +} -- cgit v1.2.3