func TestBadSpending(t *testing.T) {
_, err := createSpends(coin.Now(), coin.UxArray{},
Balance{1e6 + 1, 1000}, 0, 1)
assertError(t, err, "Coins must be multiple of 1e6")
_, err = createSpends(coin.Now(), coin.UxArray{},
Balance{0, 100}, 0, 1)
assertError(t, err, "Zero spend amount")
}
func TestCreateSpendsWithBurn(t *testing.T) {
now := coin.Now()
amt := Balance{10e6, 100}
uxs := makeUxBalances([]Balance{
Balance{1e6, 50},
Balance{8e6, 40},
Balance{2e6, 60},
}, now)
// Force them to get sorted
uxs[2].Head.BkSeq = uint64(0)
uxs[1].Head.BkSeq = uint64(1)
uxs[0].Head.BkSeq = uint64(2)
cuxs := append(coin.UxArray{}, uxs...)
// Should spend 8e6,2e6 for the exact amount, but have to add 1e6 to
// obtain +50 for a 50% fee
spends, err := createSpends(now, uxs, amt, 0, 2)
assert.Nil(t, err)
assert.Equal(t, len(spends), 3)
assert.Equal(t, spends, coin.UxArray{cuxs[2], cuxs[1], cuxs[0]})
have := Balance{0, 0}
for _, ux := range spends {
have = have.Add(NewBalanceFromUxOut(now, &ux))
}
burn, change, err := calculateBurnAndChange(have.Hours, amt.Hours, 0, 2)
assert.Equal(t, burn, uint64(50))
assert.Equal(t, change, uint64(0))
assert.Nil(t, err)
}
func TestCreateSpendsNotEnoughHours(t *testing.T) {
now := coin.Now()
amt := Balance{10e6, 110}
uxs := makeUxBalances([]Balance{
Balance{2e6, 100},
Balance{8e6, 0},
}, now)
_, err := createSpends(now, uxs, amt, 0, 0)
assertError(t, err, "Not enough hours")
}
func TestIgnoreBadCoins(t *testing.T) {
// We would satisfy this spend if the bad coins were not skipped
now := coin.Now()
amt := Balance{10e6, 100}
uxs := makeUxBalances([]Balance{
Balance{2e6, 50},
Balance{8e6, 0},
Balance{0, 100},
Balance{1e6 + 1, 100},
}, now)
_, err := createSpends(now, uxs, amt, 0, 0)
assertError(t, err, "Not enough hours")
}
func makeUxOut(t *testing.T) coin.UxOut {
return coin.UxOut{
Head: coin.UxHead{
BkSeq: 1,
Time: coin.Now(),
},
Body: coin.UxBody{
SrcTransaction: randSHA256(),
Address: makeAddress(),
Coins: 1e6,
Hours: 1024,
},
}
}
func TestCreateSpendsNotEnoughBurn(t *testing.T) {
now := coin.Now()
amt := Balance{10e6, 100}
uxs := makeUxBalances([]Balance{
Balance{1e6, 40},
Balance{8e6, 40},
Balance{2e6, 60},
}, now)
// Force them to get sorted
uxs[2].Head.BkSeq = uint64(0)
uxs[1].Head.BkSeq = uint64(1)
uxs[0].Head.BkSeq = uint64(2)
_, err := createSpends(now, uxs, amt, 0, 2)
assertError(t, err, "Not enough hours to burn")
}
func TestCreateSpends(t *testing.T) {
now := coin.Now()
amt := Balance{12e6, 125}
uxs := makeUxBalances([]Balance{
Balance{1e6, 50},
Balance{8e6, 10}, // 3
Balance{2e6, 80}, // 2
Balance{5e6, 15}, // 4
Balance{7e6, 20}, // 1
}, now)
uxs[4].Head.BkSeq = uint64(1)
uxs[3].Head.BkSeq = uint64(4)
uxs[2].Head.BkSeq = uint64(2)
uxs[1].Head.BkSeq = uint64(3)
uxs[0].Head.BkSeq = uint64(5)
if sort.IsSorted(OldestUxOut(uxs)) {
uxs[0], uxs[1] = uxs[1], uxs[0]
}
assert.False(t, sort.IsSorted(OldestUxOut(uxs)))
expectedSorting := coin.UxArray{uxs[4], uxs[2], uxs[1], uxs[3], uxs[0]}
cuxs := append(coin.UxArray{}, uxs...)
sort.Sort(OldestUxOut(cuxs))
assert.Equal(t, expectedSorting, cuxs)
assert.True(t, sort.IsSorted(OldestUxOut(cuxs)))
assert.False(t, sort.IsSorted(OldestUxOut(uxs)))
ouxs := append(coin.UxArray{}, uxs...)
spends, err := createSpends(now, uxs, amt, 0, 0)
assert.True(t, sort.IsSorted(OldestUxOut(uxs)))
assert.Nil(t, err)
assert.Equal(t, spends, cuxs[:len(spends)])
assert.Equal(t, len(spends), 4)
assert.Equal(t, spends, coin.UxArray{ouxs[4], ouxs[2], ouxs[1], ouxs[3]})
// Recalculate what it should be
b := Balance{0, 0}
ouxs = make(coin.UxArray, 0, len(spends))
for _, ux := range cuxs {
if b.Coins > amt.Coins && b.Hours >= amt.Hours {
break
}
b = b.Add(NewBalanceFromUxOut(now, &ux))
ouxs = append(ouxs, ux)
}
assert.Equal(t, len(ouxs), len(spends))
assert.Equal(t, ouxs, spends)
}
func TestCreateSpendsExact(t *testing.T) {
now := coin.Now()
amt := Balance{10e6, 100}
uxs := makeUxBalances([]Balance{
Balance{1e6, 50},
Balance{8e6, 40},
Balance{2e6, 60},
}, now)
// Force them to get sorted
uxs[2].Head.BkSeq = uint64(0)
uxs[1].Head.BkSeq = uint64(1)
uxs[0].Head.BkSeq = uint64(2)
cuxs := append(coin.UxArray{}, uxs...)
spends, err := createSpends(now, uxs, amt, 0, 0)
assert.Nil(t, err)
assert.Equal(t, len(spends), 2)
assert.Equal(t, spends, coin.UxArray{cuxs[2], cuxs[1]})
}
func TestCreateSpendingTransaction(t *testing.T) {
// Setup
w := NewSimpleWallet()
w.Populate(4)
uncf := NewUnconfirmedTxnPool()
now := coin.Now()
a := makeAddress()
// Failing createSpends
amt := Balance{0, 0}
unsp := coin.NewUnspentPool()
_, err := CreateSpendingTransaction(w, uncf, &unsp, now, amt, 0, 0, a)
assert.NotNil(t, err)
// Valid txn, fee, no change
uxs := makeUxBalancesForAddresses([]Balance{
Balance{10e6, 150},
Balance{15e6, 150},
}, now, w.GetAddresses()[:2])
unsp = coin.NewUnspentPool()
addUxArrayToUnspentPool(&unsp, uxs)
amt = Balance{25e6, 200}
tx, err := CreateSpendingTransaction(w, uncf, &unsp, now, amt, 100, 0, a)
assert.Nil(t, err)
assert.Equal(t, len(tx.Out), 1)
assert.Equal(t, tx.Out[0], coin.TransactionOutput{
Coins: 25e6,
Hours: 200,
Address: a,
})
assert.Equal(t, len(tx.In), 2)
assert.Equal(t, tx.In, []coin.SHA256{uxs[0].Hash(), uxs[1].Hash()})
assert.Nil(t, tx.Verify())
// Valid txn, change
uxs = makeUxBalancesForAddresses([]Balance{
Balance{10e6, 150},
Balance{15e6, 200},
Balance{1e6, 125},
}, now, w.GetAddresses()[:3])
unsp = coin.NewUnspentPool()
addUxArrayToUnspentPool(&unsp, uxs)
amt = Balance{25e6, 200}
tx, err = CreateSpendingTransaction(w, uncf, &unsp, now, amt, 100, 0, a)
assert.Nil(t, err)
assert.Equal(t, len(tx.Out), 2)
assert.Equal(t, tx.Out[0], coin.TransactionOutput{
Coins: 1e6,
Hours: (150 + 200 + 125) - (200 + 100),
Address: w.GetAddresses()[0],
})
assert.Equal(t, tx.Out[1], coin.TransactionOutput{
Coins: 25e6,
Hours: 200,
Address: a,
})
assert.Equal(t, len(tx.In), 3)
assert.Equal(t, tx.In, []coin.SHA256{
uxs[0].Hash(), uxs[1].Hash(), uxs[2].Hash(),
})
assert.Nil(t, tx.Verify())
// Valid txn, but wastes coin hours
uxs = makeUxBalancesForAddresses([]Balance{
Balance{10e6, 150},
Balance{15e6, 200},
}, now, w.GetAddresses()[:2])
unsp = coin.NewUnspentPool()
addUxArrayToUnspentPool(&unsp, uxs)
amt = Balance{25e6, 200}
_, err = CreateSpendingTransaction(w, uncf, &unsp, now, amt, 100, 0, a)
assertError(t, err, "Have enough coins, but not enough to send coin "+
"hours change back. Would spend 50 more hours than requested.")
// Would be valid, but unconfirmed subtraction causes it to not be
// First, make a txn to subtract
uxs = makeUxBalancesForAddresses([]Balance{
Balance{10e6, 150},
Balance{15e6, 150},
}, now, w.GetAddresses()[:2])
unsp = coin.NewUnspentPool()
addUxArrayToUnspentPool(&unsp, uxs)
amt = Balance{25e6, 200}
tx, err = CreateSpendingTransaction(w, uncf, &unsp, now, amt, 100, 0, a)
assert.Nil(t, err)
// Add it to the unconfirmed pool (bypass RecordTxn to avoid blockchain)
uncf.Txns[tx.Hash()] = uncf.createUnconfirmedTxn(&unsp, tx,
w.GetAddressSet())
// Make a spend that must not reuse previous addresses
_, err = CreateSpendingTransaction(w, uncf, &unsp, now, amt, 100, 0, a)
assertError(t, err, "Not enough coins")
}