63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
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package txsizes_test
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import (
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"testing"
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"github.com/btcsuite/btcd/wire"
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. "github.com/btcsuite/btcwallet/wallet/internal/txsizes"
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)
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const (
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p2pkhScriptSize = P2PKHPkScriptSize
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p2shScriptSize = 23
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)
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func makeInts(value int, n int) []int {
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v := make([]int, n)
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for i := range v {
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v[i] = value
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}
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return v
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}
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func TestEstimateSerializeSize(t *testing.T) {
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tests := []struct {
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InputCount int
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OutputScriptLengths []int
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AddChangeOutput bool
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ExpectedSizeEstimate int
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}{
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0: {1, []int{}, false, 159},
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1: {1, []int{p2pkhScriptSize}, false, 193},
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2: {1, []int{}, true, 193},
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3: {1, []int{p2pkhScriptSize}, true, 227},
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4: {1, []int{p2shScriptSize}, false, 191},
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5: {1, []int{p2shScriptSize}, true, 225},
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6: {2, []int{}, false, 308},
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7: {2, []int{p2pkhScriptSize}, false, 342},
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8: {2, []int{}, true, 342},
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9: {2, []int{p2pkhScriptSize}, true, 376},
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10: {2, []int{p2shScriptSize}, false, 340},
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11: {2, []int{p2shScriptSize}, true, 374},
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// 0xfd is discriminant for 16-bit compact ints, compact int
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// total size increases from 1 byte to 3.
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12: {1, makeInts(p2pkhScriptSize, 0xfc), false, 8727},
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13: {1, makeInts(p2pkhScriptSize, 0xfd), false, 8727 + P2PKHOutputSize + 2},
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14: {1, makeInts(p2pkhScriptSize, 0xfc), true, 8727 + P2PKHOutputSize + 2},
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15: {0xfc, []int{}, false, 37558},
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16: {0xfd, []int{}, false, 37558 + RedeemP2PKHInputSize + 2},
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}
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for i, test := range tests {
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outputs := make([]*wire.TxOut, 0, len(test.OutputScriptLengths))
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for _, l := range test.OutputScriptLengths {
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outputs = append(outputs, &wire.TxOut{PkScript: make([]byte, l)})
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}
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actualEstimate := EstimateSerializeSize(test.InputCount, outputs, test.AddChangeOutput)
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if actualEstimate != test.ExpectedSizeEstimate {
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t.Errorf("Test %d: Got %v: Expected %v", i, actualEstimate, test.ExpectedSizeEstimate)
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}
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}
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}
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