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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
commit43a123c1ae6613b3efeed291fa552ecd909d3acf (patch)
treefd92518b7024bc74031f78a1cf9e454b65e73665 /src/hash/example_test.go
parentInitial commit. (diff)
downloadgolang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz
golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/hash/example_test.go')
-rw-r--r--src/hash/example_test.go51
1 files changed, 51 insertions, 0 deletions
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
+}