hits []PallocSum
	}
	tests := make(map[string]test)
	tests["NoneFree"] = test{
		free: []BitRange{},
		hits: []PallocSum{
			PackPallocSum(0, 0, 0),
		},
	}
	tests["OnlyStart"] = test{
		free: []BitRange{{0, 10}},
		hits: []PallocSum{
			PackPallocSum(10, 10, 0),
		},
	}
	tests["OnlyEnd"] = test{
		free: []BitRange{{PallocChunkPages - 40, 40}},
		hits: []PallocSum{