添加 github.com/pion/dtls 代码

dtls-2.0.9/pkg/protocol/change_cipher_spec_test.go

@@ -0,0 +1,31 @@
+package protocol
+
+import (
+	"errors"
+	"reflect"
+	"testing"
+)
+
+func TestChangeCipherSpecRoundTrip(t *testing.T) {
+	c := ChangeCipherSpec{}
+	raw, err := c.Marshal()
+	if err != nil {
+		t.Error(err)
+	}
+
+	var cNew ChangeCipherSpec
+	if err := cNew.Unmarshal(raw); err != nil {
+		t.Error(err)
+	}
+
+	if !reflect.DeepEqual(c, cNew) {
+		t.Errorf("ChangeCipherSpec round trip: got %#v, want %#v", cNew, c)
+	}
+}
+
+func TestChangeCipherSpecInvalid(t *testing.T) {
+	c := ChangeCipherSpec{}
+	if err := c.Unmarshal([]byte{0x00}); !errors.Is(err, errInvalidCipherSpec) {
+		t.Errorf("ChangeCipherSpec invalid assert: got %#v, want %#v", err, errInvalidCipherSpec)
+	}
+}