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More static size estimation fixtures #81

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103 changes: 103 additions & 0 deletions test/size_estimation.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -653,6 +653,109 @@ describe("SizeEstimation.estimateTxWeight", function() {
cb();
});

it("estimates p2sh p2wpkh weight", function(cb) {
var wif = "L58TinpdSF52WNbKx7Jnyj5UohzDWxYupeiBd4FrnuPmPvBkLUzW";
var testPriv = bitcoin.ECPair.fromWIF(wif, bitcoin.networks.bitcoin);
var pkHash160 = bitcoin.crypto.hash160(testPriv.getPublicKeyBuffer());
var wp = bitcoin.script.witnessPubKeyHash.output.encode(pkHash160);
var wpHash160 = bitcoin.crypto.hash160(wp);
var spk = bitcoin.script.scriptHash.output.encode(wpHash160);

var utxos = [
{
txid: "d37f2a922c3e03d5c8e3bbb5e8f704d4eb221e4c9e1e3165201e58ddea54b440",
vout: 0,
value: 100000,
scriptpubkey_hex: spk,
redeem_script: wp.toString('hex')
}
];

var txb = new bitcoin.TransactionBuilder();
utxos.map(function(utxo) {
txb.addInput(utxo.txid, utxo.vout, bitcoin.Transaction.DEFAULT_SEQUENCE, utxo.scriptpubkey_hex);
});

txb.addOutput(Buffer.from("0020916ff972855bf7589caf8c46a31f7f33b07d0100d953fde95a8354ac36e98165", "hex"), 86591);
txb.sign(0, testPriv, Buffer.from(utxos[0].redeem_script, "hex"), null, utxos[0].value);
var tx = txb.build();

var weight = SizeEstimation.estimateTxWeight(tx, utxos);
assert.equal(weight, 578);

var vsize = SizeEstimation.estimateTxVsize(tx, utxos);
assert.equal(vsize, 145);
cb();
});

it("estimates p2wsh multisig (1 of 1) estimation", function(cb) {
var wif = "L58TinpdSF52WNbKx7Jnyj5UohzDWxYupeiBd4FrnuPmPvBkLUzW";
var testPriv = bitcoin.ECPair.fromWIF(wif, bitcoin.networks.bitcoin);
var ws = bitcoin.script.multisig.output.encode(1, [testPriv.getPublicKeyBuffer()]);
var wsSha256 = bitcoin.crypto.sha256(ws);
var wp = bitcoin.script.witnessScriptHash.output.encode(wsSha256);

var utxos = [
{
txid: "d37f2a922c3e03d5c8e3bbb5e8f704d4eb221e4c9e1e3165201e58ddea54b440",
vout: 0,
value: 100000,
scriptpubkey_hex: wp,
witness_script: ws.toString("hex")
}
];

var txb = new bitcoin.TransactionBuilder();
utxos.map(function(utxo) {
txb.addInput(utxo.txid, utxo.vout, bitcoin.Transaction.DEFAULT_SEQUENCE, utxo.scriptpubkey_hex);
});

txb.addOutput(Buffer.from("00145d6f02f47dc6c57093df246e3742cfe1e22ab410", "hex"), 73182);
txb.sign(0, testPriv, null, null, utxos[0].value, ws);
var tx = txb.build();

var weight = SizeEstimation.estimateTxWeight(tx, utxos);
assert.equal(weight, 443);

var vsize = SizeEstimation.estimateTxVsize(tx, utxos);
assert.equal(vsize, 111);
cb();
});

it("estimates p2wsh multisig (1 of 1) estimation", function(cb) {
var wif = "L58TinpdSF52WNbKx7Jnyj5UohzDWxYupeiBd4FrnuPmPvBkLUzW";
var testPriv = bitcoin.ECPair.fromWIF(wif, bitcoin.networks.bitcoin);
var ws = bitcoin.script.multisig.output.encode(1, [testPriv.getPublicKeyBuffer()]);
var wsSha256 = bitcoin.crypto.sha256(ws);
var wp = bitcoin.script.witnessScriptHash.output.encode(wsSha256);

var utxos = [
{
txid: "d37f2a922c3e03d5c8e3bbb5e8f704d4eb221e4c9e1e3165201e58ddea54b440",
vout: 0,
value: 100000,
scriptpubkey_hex: wp,
witness_script: ws.toString("hex")
}
];

var txb = new bitcoin.TransactionBuilder();
utxos.map(function(utxo) {
txb.addInput(utxo.txid, utxo.vout, bitcoin.Transaction.DEFAULT_SEQUENCE, utxo.scriptpubkey_hex);
});

txb.addOutput(Buffer.from("00145d6f02f47dc6c57093df246e3742cfe1e22ab410", "hex"), 73182);
txb.sign(0, testPriv, null, null, utxos[0].value, ws);
var tx = txb.build();

var weight = SizeEstimation.estimateTxWeight(tx, utxos);
assert.equal(weight, 443);

var vsize = SizeEstimation.estimateTxVsize(tx, utxos);
assert.equal(vsize, 111);
cb();
});

it("estimates p2wpkh weight 2", function(cb) {
var utxos = [
{
Expand Down