添加 github.com/pion/dtls 代码

dtls-2.0.9/pkg/protocol/extension/extension_test.go

@@ -0,0 +1,22 @@
+package extension
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestExtensions(t *testing.T) {
+	t.Run("Zero", func(t *testing.T) {
+		extensions, err := Unmarshal([]byte{})
+		if err != nil || len(extensions) != 0 {
+			t.Fatal("Failed to decode zero extensions")
+		}
+	})
+
+	t.Run("Invalid", func(t *testing.T) {
+		extensions, err := Unmarshal([]byte{0x00})
+		if !errors.Is(err, errBufferTooSmall) || len(extensions) != 0 {
+			t.Fatal("Failed to error on invalid extension")
+		}
+	})
+}