},
		wantErr: ErrHeader,
	}, {
		inputHdrs: map[string]string{
			paxGNUSparseNumBlocks: "2",
			paxGNUSparseMap:       "0,1,02,3",
			paxGNUSparseRealSize:  "4321",
		},
		wantMap:  sparseDatas{{0, 1}, {2, 3}},
		wantSize: 4321,
	}, {
		inputHdrs: map[string]string{
			paxGNUSparseNumBlocks: "2",
			paxGNUSparseMap:       "0,one1,2,3",
		},
		wantErr: ErrHeader,
	}, {