// Reconstructs the indices from the underlying Array
func (self *UnspentPool) Rebuild(uxs UxArray) {
self.Pool = make(map[cipher.SHA256]UxOut, len(uxs))
xh := cipher.SHA256{}
for i, _ := range uxs {
h := uxs[i].Hash()
self.Pool[h] = uxs[i]
xh = xh.Xor(uxs[i].SnapshotHash())
}
self.XorHash = xh
if len(self.Pool) != len(uxs) {
log.Panic("Corrupt UnspentPool array: contains duplicate UxOut")
}
}
func TestUnspentPoolRebuild(t *testing.T) {
up := NewUnspentPool()
arr := make(UxArray, 0)
arr = append(arr, makeUxOut(t))
arr = append(arr, makeUxOut(t))
assert.Equal(t, len(up.Pool), 0)
assert.Equal(t, up.XorHash, cipher.SHA256{})
up.Rebuild(arr)
assert.Equal(t, len(up.Pool), 2)
for _, x := range arr {
ux, ok := up.Pool[x.Hash()]
assert.True(t, ok)
assert.Equal(t, x, ux)
}
h := cipher.SHA256{}
h = h.Xor(arr[0].SnapshotHash())
h = h.Xor(arr[1].SnapshotHash())
assert.Equal(t, up.XorHash, h)
assert.NotEqual(t, up.XorHash, cipher.SHA256{})
// Duplicate item in array causes panic
arr = append(arr, arr[0])
assert.Panics(t, func() { up.Rebuild(arr) })
}