--- /dev/null
+package match
+
+import (
+ "testing"
+
+ "github.com/bytom/vapor/application/mov/common"
+ "github.com/bytom/vapor/application/mov/mock"
+ "github.com/bytom/vapor/protocol/bc"
+ "github.com/bytom/vapor/protocol/bc/types"
+ "github.com/bytom/vapor/protocol/validation"
+)
+
+func TestGenerateMatchedTxs(t *testing.T) {
+ btc2eth := &common.TradePair{FromAssetID: &mock.BTC, ToAssetID: &mock.ETH}
+ eth2btc := &common.TradePair{FromAssetID: &mock.ETH, ToAssetID: &mock.BTC}
+ eth2eos := &common.TradePair{FromAssetID: &mock.ETH, ToAssetID: &mock.EOS}
+ eos2btc := &common.TradePair{FromAssetID: &mock.EOS, ToAssetID: &mock.BTC}
+
+ cases := []struct {
+ desc string
+ tradePairs []*common.TradePair
+ initStoreOrders []*common.Order
+ wantMatchedTxs []*types.Tx
+ }{
+ {
+ desc: "full matched",
+ tradePairs: []*common.TradePair{btc2eth, eth2btc},
+ initStoreOrders: []*common.Order{
+ mock.Btc2EthOrders[0], mock.Btc2EthOrders[1],
+ mock.Eth2BtcOrders[0],
+ },
+ wantMatchedTxs: []*types.Tx{
+ mock.MatchedTxs[1],
+ },
+ },
+ {
+ desc: "partial matched",
+ tradePairs: []*common.TradePair{btc2eth, eth2btc},
+ initStoreOrders: []*common.Order{
+ mock.Btc2EthOrders[0], mock.Btc2EthOrders[1],
+ mock.Eth2BtcOrders[1],
+ },
+ wantMatchedTxs: []*types.Tx{
+ mock.MatchedTxs[0],
+ },
+ },
+ {
+ desc: "partial matched and continue to match",
+ tradePairs: []*common.TradePair{btc2eth, eth2btc},
+ initStoreOrders: []*common.Order{
+ mock.Btc2EthOrders[0], mock.Btc2EthOrders[1],
+ mock.Eth2BtcOrders[2],
+ },
+ wantMatchedTxs: []*types.Tx{
+ mock.MatchedTxs[2],
+ mock.MatchedTxs[3],
+ },
+ },
+ {
+ desc: "unable to match",
+ tradePairs: []*common.TradePair{btc2eth, eth2btc},
+ initStoreOrders: []*common.Order{
+ mock.Btc2EthOrders[1],
+ mock.Eth2BtcOrders[0],
+ },
+ wantMatchedTxs: []*types.Tx{},
+ },
+ {
+ desc: "cycle match",
+ tradePairs: []*common.TradePair{btc2eth, eth2eos, eos2btc},
+ initStoreOrders: []*common.Order{
+ mock.Btc2EthOrders[0], mock.Eth2EosOrders[0], mock.Eos2BtcOrders[0],
+ },
+ wantMatchedTxs: []*types.Tx{
+ mock.MatchedTxs[6],
+ },
+ },
+ {
+ desc: "multiple assets as a fee",
+ tradePairs: []*common.TradePair{btc2eth, eth2btc},
+ initStoreOrders: []*common.Order{
+ mock.Btc2EthOrders[0], mock.Eth2BtcOrders[3],
+ },
+ wantMatchedTxs: []*types.Tx{
+ mock.MatchedTxs[11],
+ },
+ },
+ }
+
+ for i, c := range cases {
+ movStore := mock.NewMovStore([]*common.TradePair{btc2eth, eth2btc}, c.initStoreOrders)
+ matchEngine := NewEngine(NewOrderBook(movStore, nil, nil), NewDefaultFeeStrategy(), mock.RewardProgram)
+ var gotMatchedTxs []*types.Tx
+ for matchEngine.HasMatchedTx(c.tradePairs...) {
+ matchedTx, err := matchEngine.NextMatchedTx(c.tradePairs...)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ gotMatchedTxs = append(gotMatchedTxs, matchedTx)
+ }
+
+ if len(c.wantMatchedTxs) != len(gotMatchedTxs) {
+ t.Errorf("#%d(%s) the length of got matched tx is not equals want matched tx", i, c.desc)
+ continue
+ }
+
+ for j, gotMatchedTx := range gotMatchedTxs {
+ if _, err := validation.ValidateTx(gotMatchedTx.Tx, &bc.Block{BlockHeader: &bc.BlockHeader{Version: 1}}); err != nil {
+ t.Fatal(err)
+ }
+
+ c.wantMatchedTxs[j].Version = 1
+ byteData, err := c.wantMatchedTxs[j].MarshalText()
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ c.wantMatchedTxs[j].SerializedSize = uint64(len(byteData))
+ wantMatchedTx := types.NewTx(c.wantMatchedTxs[j].TxData)
+ if gotMatchedTx.ID != wantMatchedTx.ID {
+ t.Errorf("#%d(%s) the tx hash of got matched tx: %s is not equals want matched tx: %s", i, c.desc, gotMatchedTx.ID.String(), wantMatchedTx.ID.String())
+ }
+ }
+ }
+}
+
+func TestValidateTradePairs(t *testing.T) {
+ cases := []struct {
+ desc string
+ tradePairs []*common.TradePair
+ wantError bool
+ }{
+ {
+ desc: "valid case of two trade pairs",
+ tradePairs: []*common.TradePair{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.BTC,
+ },
+ },
+ wantError: false,
+ },
+ {
+ desc: "invalid case of two trade pairs",
+ tradePairs: []*common.TradePair{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.EOS,
+ },
+ },
+ wantError: true,
+ },
+ {
+ desc: "valid case of three trade pairs",
+ tradePairs: []*common.TradePair{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.EOS,
+ },
+ {
+ FromAssetID: &mock.EOS,
+ ToAssetID: &mock.BTC,
+ },
+ },
+ wantError: false,
+ },
+ {
+ desc: "invalid case of three trade pairs",
+ tradePairs: []*common.TradePair{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.BTC,
+ },
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.BTC,
+ },
+ },
+ wantError: true,
+ },
+ {
+ desc: "valid case 2 of three trade pairs",
+ tradePairs: []*common.TradePair{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ },
+ {
+ FromAssetID: &mock.EOS,
+ ToAssetID: &mock.BTC,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.EOS,
+ },
+ },
+ wantError: false,
+ },
+ }
+
+ for i, c := range cases {
+ err := validateTradePairs(c.tradePairs)
+ if c.wantError && err == nil {
+ t.Errorf("#%d(%s): want error, got no error", i, c.desc)
+ }
+
+ if !c.wantError && err != nil {
+ t.Errorf("#%d(%s): want no error, got error (%v)", i, c.desc, err)
+ }
+ }
+}
+
+func TestIsMatched(t *testing.T) {
+ cases := []struct {
+ desc string
+ orders []*common.Order
+ wantMatched bool
+ }{
+ {
+ desc: "ratio is equals",
+ orders: []*common.Order{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ RatioNumerator: 6250,
+ RatioDenominator: 3,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.BTC,
+ RatioNumerator: 3,
+ RatioDenominator: 6250,
+ },
+ },
+ wantMatched: true,
+ },
+ {
+ desc: "ratio is equals, and numerator and denominator are multiples of the opposite",
+ orders: []*common.Order{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ RatioNumerator: 6250,
+ RatioDenominator: 3,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.BTC,
+ RatioNumerator: 9,
+ RatioDenominator: 18750,
+ },
+ },
+ wantMatched: true,
+ },
+ {
+ desc: "matched with a slight diff",
+ orders: []*common.Order{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ RatioNumerator: 62500000000000000,
+ RatioDenominator: 30000000000001,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.BTC,
+ RatioNumerator: 3,
+ RatioDenominator: 6250,
+ },
+ },
+ wantMatched: true,
+ },
+ {
+ desc: "not matched with a slight diff",
+ orders: []*common.Order{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ RatioNumerator: 62500000000000001,
+ RatioDenominator: 30000000000000,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.BTC,
+ RatioNumerator: 3,
+ RatioDenominator: 6250,
+ },
+ },
+ wantMatched: false,
+ },
+ {
+ desc: "ring matched",
+ orders: []*common.Order{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ RatioNumerator: 2000000003,
+ RatioDenominator: 100000001,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.EOS,
+ RatioNumerator: 400000000001,
+ RatioDenominator: 2000000003,
+ },
+ {
+ FromAssetID: &mock.EOS,
+ ToAssetID: &mock.BTC,
+ RatioNumerator: 100000001,
+ RatioDenominator: 400000000001,
+ },
+ },
+ wantMatched: true,
+ },
+ {
+ desc: "ring matched with a slight diff",
+ orders: []*common.Order{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ RatioNumerator: 2000000003,
+ RatioDenominator: 100000001,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.EOS,
+ RatioNumerator: 400000000001,
+ RatioDenominator: 2000000003,
+ },
+ {
+ FromAssetID: &mock.EOS,
+ ToAssetID: &mock.BTC,
+ RatioNumerator: 100000000,
+ RatioDenominator: 400000000001,
+ },
+ },
+ wantMatched: true,
+ },
+ {
+ desc: "ring fail matched with a slight diff",
+ orders: []*common.Order{
+ {
+ FromAssetID: &mock.BTC,
+ ToAssetID: &mock.ETH,
+ RatioNumerator: 2000000003,
+ RatioDenominator: 100000001,
+ },
+ {
+ FromAssetID: &mock.ETH,
+ ToAssetID: &mock.EOS,
+ RatioNumerator: 400000000001,
+ RatioDenominator: 2000000003,
+ },
+ {
+ FromAssetID: &mock.EOS,
+ ToAssetID: &mock.BTC,
+ RatioNumerator: 100000002,
+ RatioDenominator: 400000000001,
+ },
+ },
+ wantMatched: false,
+ },
+ }
+
+ for i, c := range cases {
+ gotMatched := IsMatched(c.orders)
+ if gotMatched != c.wantMatched {
+ t.Errorf("#%d(%s) got matched:%v, want matched:%v", i, c.desc, gotMatched, c.wantMatched)
+ }
+ }
+}
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