Set<String> expected = new HashSet<>(Arrays.asList(dateBefore, dateAfter));
        assertTrue(expected.contains(datePart), "Expected " + datePart + " to be in " + expected);
    }

    @Test
    void buildNumberNotSet() {
        RemoteSnapshotMetadata metadata =
                new RemoteSnapshotMetadata(new DefaultArtifact("a:b:1-SNAPSHOT"), new Date(), null);
        metadata.merge(new Metadata());