t.Error("unexpected counter state")
	}
}

func TestGCMNonce(t *testing.T) {
	t.Run("gcm", func(t *testing.T) {
		testGCMNonce(t, newGCMTransformer, 0, func(_ int, nonce []byte) {
			if bytes.Equal(nonce, make([]byte, len(nonce))) {
				t.Error("got all zeros for nonce")
			}
		})
	})

	t.Run("gcm unsafe", func(t *testing.T) {
		testGCMNonce(t, newGCMTransformerWithUniqueKeyUnsafeTest, 0, func(i int, nonce []byte) {