1 files changed, 15 insertions, 0 deletions
diff --git a/internal/helper/duration/duration_test.go b/internal/helper/duration/duration_test.go
new file mode 100644
index 000000000..9ca1830dc
--- /dev/null
+++ b/internal/helper/duration/duration_test.go
@@ -0,0 +1,15 @@
+package duration
+
+import (
+	"encoding"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestDuration(t *testing.T) {
+	t.Parallel()
+
+	require.Implements(t, (*encoding.TextMarshaler)(nil), new(Duration))
+	require.Implements(t, (*encoding.TextUnmarshaler)(nil), new(Duration))
+}