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add integration test for /elections/price endpoint #1140

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Oct 13, 2023
Merged

add integration test for /elections/price endpoint #1140

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249 changes: 249 additions & 0 deletions test/api_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ import (
"go.vocdoni.io/dvote/util"
"go.vocdoni.io/dvote/vochain"
"go.vocdoni.io/dvote/vochain/state"
"go.vocdoni.io/dvote/vochain/state/electionprice"
"go.vocdoni.io/proto/build/go/models"
"google.golang.org/protobuf/proto"
)
Expand Down Expand Up @@ -254,6 +255,107 @@ func TestAPIaccount(t *testing.T) {
qt.Assert(t, code, qt.Equals, 200, qt.Commentf("response: %s", resp))
}

func TestAPIElectionCost(t *testing.T) {
// cheap election
runAPIElectionCostWithParams(t,
electionprice.ElectionParameters{
MaxCensusSize: 100,
ElectionDuration: 2000,
EncryptedVotes: false,
AnonymousVotes: false,
MaxVoteOverwrite: 1,
},
10000, 5000,
5, 1000,
6)

// bigger census size, duration, reduced network capacity, etc
runAPIElectionCostWithParams(t,
electionprice.ElectionParameters{
MaxCensusSize: 5000,
ElectionDuration: 10000,
EncryptedVotes: false,
AnonymousVotes: false,
MaxVoteOverwrite: 3,
},
200000, 6000,
10, 100,
762)

// very expensive election
runAPIElectionCostWithParams(t,
electionprice.ElectionParameters{
MaxCensusSize: 100000,
ElectionDuration: 1000000,
EncryptedVotes: true,
AnonymousVotes: true,
MaxVoteOverwrite: 10,
},
100000, 700000,
10, 100,
547026)
}

func runAPIElectionCostWithParams(t *testing.T,
electionParams electionprice.ElectionParameters,
startBlock uint32, initialBalance uint64,
txCostNewProcess, networkCapacity uint64,
expectedPrice uint64,
) {
server := testcommon.APIserver{}
server.Start(t,
api.ChainHandler,
api.CensusHandler,
api.VoteHandler,
api.AccountHandler,
api.ElectionHandler,
api.WalletHandler,
)

token1 := uuid.New()
c := testutil.NewTestHTTPclient(t, server.ListenAddr, &token1)

err := server.VochainAPP.State.SetTxBaseCost(models.TxType_NEW_PROCESS, txCostNewProcess)
qt.Assert(t, err, qt.IsNil)
err = server.VochainAPP.State.SetElectionPriceCalc()
qt.Assert(t, err, qt.IsNil)
server.VochainAPP.State.ElectionPriceCalc.SetCapacity(networkCapacity)

// Block 1
server.VochainAPP.AdvanceTestBlock()

signer := createAccount(t, c, server, initialBalance)

// Block 2
server.VochainAPP.AdvanceTestBlock()
waitUntilHeight(t, c, 2)

censusRoot := createCensus(t, c)

// first check predictedPrice equals the hardcoded expected

predictedPrice := predictPriceForElection(t, c, electionParams)
qt.Assert(t, predictedPrice, qt.Equals, expectedPrice)

// now check balance before creating election and then after creating,
// and confirm the balance decreased exactly the expected amount

qt.Assert(t, requestAccount(t, c, signer.Address().String()).Balance,
qt.Equals, initialBalance)

createElection(t, c, signer, electionParams, censusRoot, startBlock, server.VochainAPP.ChainID())

// Block 3
server.VochainAPP.AdvanceTestBlock()
waitUntilHeight(t, c, 3)

balance := requestAccount(t, c, signer.Address().String()).Balance
qt.Assert(t, balance,
qt.Equals, initialBalance-predictedPrice,
qt.Commentf("endpoint /elections/price predicted cost %d, "+
"but actual election creation costed %d", predictedPrice, initialBalance-balance))
}

func waitUntilHeight(t testing.TB, c *testutil.TestHTTPclient, h uint32) {
for {
resp, code := c.Request("GET", nil, "chain", "info")
Expand All @@ -276,3 +378,150 @@ func waitUntilHeight(t testing.TB, c *testutil.TestHTTPclient, h uint32) {
time.Sleep(time.Second * 1)
}
}

func requestAccount(t testing.TB, c *testutil.TestHTTPclient, address string) api.Account {
resp, code := c.Request("GET", nil, "accounts", address)
qt.Assert(t, code, qt.Equals, 200, qt.Commentf("response: %s", resp))
acct := api.Account{}
err := json.Unmarshal(resp, &acct)
qt.Assert(t, err, qt.IsNil)
return acct
}

func createCensus(t testing.TB, c *testutil.TestHTTPclient) (root types.HexBytes) {
resp, code := c.Request("POST", nil, "censuses", "weighted")
qt.Assert(t, code, qt.Equals, 200)
censusData := &api.Census{}
qt.Assert(t, json.Unmarshal(resp, censusData), qt.IsNil)

id1 := censusData.CensusID.String()
resp, code = c.Request("POST", nil, "censuses", id1, "publish")
qt.Assert(t, code, qt.Equals, 200)
qt.Assert(t, json.Unmarshal(resp, censusData), qt.IsNil)
qt.Assert(t, censusData.CensusID, qt.IsNotNil)
return censusData.CensusID
}

func createElection(t testing.TB, c *testutil.TestHTTPclient,
signer *ethereum.SignKeys,
electionParams electionprice.ElectionParameters,
censusRoot types.HexBytes,
startBlock uint32,
chainID string,
) api.ElectionCreate {
metadataBytes, err := json.Marshal(
&api.ElectionMetadata{
Title: map[string]string{"default": "test election"},
Description: map[string]string{"default": "test election description"},
Version: "1.0",
})

qt.Assert(t, err, qt.IsNil)
metadataURI := ipfs.CalculateCIDv1json(metadataBytes)

tx := models.Tx_NewProcess{
NewProcess: &models.NewProcessTx{
Txtype: models.TxType_NEW_PROCESS,
Nonce: 0,
Process: &models.Process{
StartBlock: startBlock,
BlockCount: electionParams.ElectionDuration,
Status: models.ProcessStatus_READY,
CensusRoot: censusRoot,
CensusOrigin: models.CensusOrigin_OFF_CHAIN_TREE_WEIGHTED,
Mode: &models.ProcessMode{AutoStart: true, Interruptible: true},
VoteOptions: &models.ProcessVoteOptions{
MaxCount: 1,
MaxValue: 1,
MaxVoteOverwrites: electionParams.MaxVoteOverwrite,
},
EnvelopeType: &models.EnvelopeType{
EncryptedVotes: electionParams.EncryptedVotes,
Anonymous: electionParams.AnonymousVotes,
},
Metadata: &metadataURI,
MaxCensusSize: electionParams.MaxCensusSize,
},
},
}

txb, err := proto.Marshal(&models.Tx{Payload: &tx})
qt.Assert(t, err, qt.IsNil)
signedTxb, err := signer.SignVocdoniTx(txb, chainID)
qt.Assert(t, err, qt.IsNil)
stx := models.SignedTx{Tx: txb, Signature: signedTxb}
stxb, err := proto.Marshal(&stx)
qt.Assert(t, err, qt.IsNil)

election := api.ElectionCreate{
TxPayload: stxb,
Metadata: metadataBytes,
}
resp, code := c.Request("POST", election, "elections")
qt.Assert(t, code, qt.Equals, 200)
err = json.Unmarshal(resp, &election)
qt.Assert(t, err, qt.IsNil)

return election
}

func predictPriceForElection(t testing.TB, c *testutil.TestHTTPclient,
electionParams electionprice.ElectionParameters) uint64 {
predicted := struct {
Price uint64 `json:"price"`
}{}

resp, code := c.Request("POST", electionParams, "elections", "price")
qt.Assert(t, code, qt.Equals, 200)
err := json.Unmarshal(resp, &predicted)
qt.Assert(t, err, qt.IsNil)

return predicted.Price
}

func createAccount(t testing.TB, c *testutil.TestHTTPclient,
server testcommon.APIserver, initialBalance uint64) *ethereum.SignKeys {
signer := ethereum.SignKeys{}
qt.Assert(t, signer.Generate(), qt.IsNil)

// metadata
meta := &api.AccountMetadata{
Version: "1.0",
}
metaData, err := json.Marshal(meta)
qt.Assert(t, err, qt.IsNil)

fp, err := vochain.GenerateFaucetPackage(server.Account, signer.Address(), initialBalance)
qt.Assert(t, err, qt.IsNil)

// transaction
stx := models.SignedTx{}
infoURI := "ipfs://" + ipfs.CalculateCIDv1json(metaData)
sik, err := signer.AccountSIK(nil)
qt.Assert(t, err, qt.IsNil)
stx.Tx, err = proto.Marshal(&models.Tx{Payload: &models.Tx_SetAccount{
SetAccount: &models.SetAccountTx{
Txtype: models.TxType_CREATE_ACCOUNT,
Nonce: new(uint32),
InfoURI: &infoURI,
Account: signer.Address().Bytes(),
FaucetPackage: fp,
SIK: sik,
},
}})
qt.Assert(t, err, qt.IsNil)
stx.Signature, err = signer.SignVocdoniTx(stx.Tx, server.VochainAPP.ChainID())
qt.Assert(t, err, qt.IsNil)
stxb, err := proto.Marshal(&stx)
qt.Assert(t, err, qt.IsNil)

// send the transaction and metadata
accSet := api.AccountSet{
Metadata: metaData,
TxPayload: stxb,
}
resp, code := c.Request("POST", &accSet, "accounts")
qt.Assert(t, code, qt.Equals, 200, qt.Commentf("response: %s", resp))

return &signer
}
2 changes: 1 addition & 1 deletion test/testcommon/api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,7 @@ func (d *APIserver) Start(t testing.TB, apis ...string) {
d.VochainAPP = vochain.TestBaseApplication(t)

// create and add balance for the pre-created Account
err = d.VochainAPP.State.CreateAccount(d.Account.Address(), "", nil, 100000)
err = d.VochainAPP.State.CreateAccount(d.Account.Address(), "", nil, 1000000)
qt.Assert(t, err, qt.IsNil)
d.VochainAPP.CommitState()

Expand Down