NewerNoncurrentVersions: 4,
				set:                     true,
			},
		},
	}
	for i, tc := range testCases {
		var got NoncurrentVersionExpiration
		dec := xml.NewDecoder(strings.NewReader(tc.xml))
		if err := dec.Decode(&got); err != nil || got != tc.expected {
			if err != nil {
				t.Fatalf("%d: Failed to unmarshal xml %v", i+1, err)
			}