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4beaf0de54
0g-chain/x/swap/handler_test.go
Ruaridh 65052ce31a
Squash merge swap-acceptance branch (#956) 
* add failing acceptance test for a user depositing into a pool

* implement GetAccount test helper

* implement swap.MsgDeposit for creating and adding liquidity to a pool

* update aliases, add event types, and fix typo/compiler errors in handler
test

* use only aliases names in handler test (don't use swap types -- ensures
we have run aliasgen), add assertion for even type message

* implement account and module account balance checks in handler test

* fill out handler assertions for testing keeper state and events

* update signed json representation and register swap/MsgDeposit for
proper encoding

* fill out boilerplate to get handler test to compile

* alias gen for pool

* add handling of message type; fill in deposit keeper method for
succesful compile; noop but test assertions now run up to module acc not
nil check

* add module account permissions for swap module -- fixes module account
creation; pass account keeper and supply keeper into swap keeper to
allow the ability to work with user and module accounts

* implement create pool logic for msg deposit; allows creation of a of new
pool, checking params to see if it is allowed.  Initi shares are set,
and senders number of shares are stored

* Swap migrations scaffolding (#925)

* swap module scaffolding

* global swap fee

* can't think of a reason for begin blocker; removing for abci.go for now;

* test pair types; refactor pair name logic; simplify pairs validation and
fix stack overflow error

* check comparison

* use test package

* init swap module genesis

* add basic marshall tests

* remove reward apy from pairs

* fix integration helpers

* use max swap fee constant; fix validation of swap fee; add tests to
cover param validation and param set setup

* use noerror over nil

* start genesis tests

* test param set validation mirrors param validation

* add genesis tests

* remove print statement

* add subtests for genesis test cases; add extra querier test for unknown
route; add keeper params testing

* add spec

* update swagger

* find replace hard -> swap in comments

* remove unused method

* rename pairs to allowed pools; pool is more commonly used, and
allowedPool makes it more clear what swap parameter is for.  In
addition, we won't conflict with Pool data structure for storing a
created pool in the store.

* remove generated link

* missed spec rename

* validate token order for allowed pools

* fix swagger

* json should be snakecase; change allowedPools to allowed_pools

* add legacy types

* add swap genesis to v0_15 migration

* add legacy types

* add swap genesis to v0_15 migration

* migration revisions

Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com>

* keeper todos

* update keeper tests

* type todos

* update types tests

* tx deposit cli cmd

* tx deposit rest

* Swap module simulation scaffolding (#924)

* sims scaffolding

* add noop operation

* genesis revisions

* add param changes

* mvoe persistance methods to main keeper file, consolidate tests

* make helper methods private. they are tested via deposit method, and
unit testing them would make test suite brittle and refactoring
difficult

* use more clear coin variables

* code 1 is reserved, use code 2 and sequence all errors

* remove todo

* Implement deadline for swap module module message. This is implemented in
handler with a interface to easily apply to it to all messages, and
separate msg validation concerns from the keeper

* move allowed pools to params -- let pool and pool_test focus on pool domain logic, not
parameter & governance concerns

* update alias

* add unitless implementatin of constant product liquidity pool to
isolate and enapsulate liquidity logic.  Swap methods interfaces are
added, but implementation not yet added

* nits and todos

* add ErrInvalidPool

* add tests for edge cases around pool depletion; add explicit panic for
edge case that results in a pool reserve being zero; handle pool
reinitialization if it is empty

* touch up comments and flush out the rest of assertions

* add data structures for keeper state storage separate from pool domain
objects, and improve structure for easier querying

* rename pool name to pool key for events

* add support for a denominated pool that uses sdk.Coins and sdk.Coin
arguments, keeping tracking of the units in the base pool.  This gives
nice separation between pool logic, and coin/denom logic

* refactor keeper to use new records for storage, and implement pool
deposit using the denominated pool

* address previous PR comment - reminder for migration if changing
account permissions

* msg deposit should validate that denoms are not equal

* add godoc comments

* golint and some poolName -> poolID cleanup

* implement adding liquidity to an existing pool

* hardcode pools in sims

* touch up comment

* withdraw keeper logic

* withdraw type updates

* add withdraw msg tx handler

* initial withdraw test

* fix panic

* use new denominated pool with existing shares

* fix: check args on deposit cmd

* add slippage limit check for depositing to an existing pool

* send coins just before event emission

* check liquidity returned is greater than zero for both coins; ensure
returned number of shares are greater than zero

* add deadline to msgwithdraw

* register msgwithdraw

* scaffold msgwithdraw types test

* register the correct msg

* modify swap functions to also return the amount paid for the pool swap
fee.  This will be used to calculate slippage and for event tracking

* add slippage types

* add expected withdrawal coins

* calculate slippage against expected coins

* update withdraw keeper tests

* spelling, improve comments on add liquidity math

* typo

* typo

* grammer

* typo / grammer

* remove pool_id from withdraw msg

* add slippage to tx cmd

* TestWithdraw_Partial

* nit

* add withdraw no pool, no deposit record tests

* drop event check on partial withdraw test

* fix broken link

* fix broken link

* resolve merge conflicts

* ensure swap fee can not be equal to 1; add full implementation of swap
pool methods;  these implementation ensure that the pool invariant is
always greater or equal to the previous invariant

* refactor duplicated code into private swap methods

* add runtime assertion to always ensure invariant is greater or equal
to the previous invariant sub fee on swaps

* improve comments for base pool swap functions

* add swap exact input and output methods to denominated pool that wrap
the base pool interface for swapping

* comment touch ups

* more comment touchups

* fix msg deposit struct tag (#943)

* use better name for swap calculation private methods

* nits: golint

* fix misspelling in method name

* Add HARD token governance committee for Hard module (#941)

* add hard gov token committee

* revisions: update migration

* revisions: update test/data file

* initial revisions

* add TokenCommittee JSONMarshal test

* fix SetPermissions method

* remove BaseCommittee Type field

* add incentive params to allowed params

* Add SWP token governance committee for Swap module (#946)

* add swp token commitee to migration

* update test, add gen export utility method

* final revisions: add TODO

* remove slippage from withdraw to use min values for coins; add
additional validation test cases

* update alias for swap module

* add withdraw tests to handler for increased coverage; note: first pass,
improvements still yet to be made here

* refact withdraw keeper to use min amounts; panic for cases that do not
happen in normal situations

* lint fixes

* use total shares to track if pool should be deleted; add more in depth
withdraw comment

* add exact args for withdraw cmd

* extract record update methods

* update depositor share record if it exists -- do not overwrite an
existing record; ensures no loss of shares if the same address deposits
more than once

* Swap queries: deposit, pool, pools (#949)

* query deposits types

* implement deposit querier keeper methods

* query deposits CLI

* query deposits REST

* query types for pool/pools

* pool/pools querier keeper methods

* pool/pools CLI

* pool/pools REST

* basic pool/pools query tests

* basic deposit querier test

* iterate share records via owner bytes

* nit: add example for querying deposits by owner only

Co-authored-by: karzak <kjydavis3@gmail.com>

* feat: add REST tx handler for swap LP withdrawals

Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com>
Co-authored-by: Denali Marsh <denali@kava.io>
Co-authored-by: denalimarsh <denalimarsh@gmail.com>
Co-authored-by: karzak <kjydavis3@gmail.com>
2021-07-13 12:38:15 +01:00

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package swap_test
import (
"fmt"
"testing"
"time"
"github.com/kava-labs/kava/x/swap"
"github.com/kava-labs/kava/x/swap/testutil"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/bank"
"github.com/stretchr/testify/suite"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/crypto"
tmtime "github.com/tendermint/tendermint/types/time"
)
var swapModuleAccountAddress = sdk.AccAddress(crypto.AddressHash([]byte(swap.ModuleAccountName)))
type handlerTestSuite struct {
testutil.Suite
handler sdk.Handler
}
func (suite *handlerTestSuite) SetupTest() {
suite.Suite.SetupTest()
suite.handler = swap.NewHandler(suite.Keeper)
}
func (suite *handlerTestSuite) TestDeposit_CreatePool() {
pool := swap.NewAllowedPool("ukava", "usdx")
suite.Require().NoError(pool.Validate())
suite.Keeper.SetParams(suite.Ctx, swap.NewParams(swap.NewAllowedPools(pool), swap.DefaultSwapFee))
balance := sdk.NewCoins(
sdk.NewCoin(pool.TokenA, sdk.NewInt(10e6)),
sdk.NewCoin(pool.TokenB, sdk.NewInt(50e6)),
)
depositor := suite.CreateAccount(balance)
deposit := swap.NewMsgDeposit(
depositor.GetAddress(),
sdk.NewCoin(pool.TokenA, depositor.GetCoins().AmountOf(pool.TokenA)),
sdk.NewCoin(pool.TokenB, depositor.GetCoins().AmountOf(pool.TokenB)),
sdk.MustNewDecFromStr("0.01"),
time.Now().Add(10*time.Minute).Unix(),
)
res, err := suite.handler(suite.Ctx, deposit)
suite.Require().NoError(err)
suite.AccountBalanceEqual(depositor, sdk.Coins(nil))
suite.ModuleAccountBalanceEqual(balance)
suite.PoolLiquidityEqual(balance)
suite.PoolShareValueEqual(depositor, pool, balance)
suite.EventsContains(res.Events, sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, swap.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, depositor.GetAddress().String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
bank.EventTypeTransfer,
sdk.NewAttribute(bank.AttributeKeyRecipient, swapModuleAccountAddress.String()),
sdk.NewAttribute(bank.AttributeKeySender, depositor.GetAddress().String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, balance.String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
swap.EventTypeSwapDeposit,
sdk.NewAttribute(swap.AttributeKeyPoolID, swap.PoolID(pool.TokenA, pool.TokenB)),
sdk.NewAttribute(swap.AttributeKeyDepositor, depositor.GetAddress().String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, balance.String()),
sdk.NewAttribute(swap.AttributeKeyShares, "22360679"),
))
}
func (suite *handlerTestSuite) TestDeposit_DeadlineExceeded() {
pool := swap.NewAllowedPool("ukava", "usdx")
suite.Require().NoError(pool.Validate())
suite.Keeper.SetParams(suite.Ctx, swap.NewParams(swap.NewAllowedPools(pool), swap.DefaultSwapFee))
balance := sdk.NewCoins(
sdk.NewCoin(pool.TokenA, sdk.NewInt(10e6)),
sdk.NewCoin(pool.TokenB, sdk.NewInt(50e6)),
)
depositor := suite.CreateAccount(balance)
deposit := swap.NewMsgDeposit(
depositor.GetAddress(),
sdk.NewCoin(pool.TokenA, depositor.GetCoins().AmountOf(pool.TokenA)),
sdk.NewCoin(pool.TokenB, depositor.GetCoins().AmountOf(pool.TokenB)),
sdk.MustNewDecFromStr("0.01"),
suite.Ctx.BlockTime().Add(-1*time.Second).Unix(),
)
res, err := suite.handler(suite.Ctx, deposit)
suite.EqualError(err, fmt.Sprintf("deadline exceeded: block time %d >= deadline %d", suite.Ctx.BlockTime().Unix(), deposit.GetDeadline().Unix()))
suite.Nil(res)
}
func (suite *handlerTestSuite) TestDeposit_ExistingPool() {
pool := swap.NewAllowedPool("ukava", "usdx")
reserves := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(10e6)),
sdk.NewCoin("usdx", sdk.NewInt(50e6)),
)
err := suite.CreatePool(reserves)
suite.Require().NoError(err)
balance := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(1e6)),
sdk.NewCoin("usdx", sdk.NewInt(5e6)),
)
depositor := suite.NewAccountFromAddr(sdk.AccAddress("new depositor"), balance)
deposit := swap.NewMsgDeposit(
depositor.GetAddress(),
sdk.NewCoin("usdx", depositor.GetCoins().AmountOf("usdx")),
sdk.NewCoin("ukava", depositor.GetCoins().AmountOf("ukava")),
sdk.MustNewDecFromStr("0.01"),
time.Now().Add(10*time.Minute).Unix(),
)
res, err := suite.handler(suite.Ctx, deposit)
suite.Require().NoError(err)
expectedDeposit := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(1e6)),
sdk.NewCoin("usdx", sdk.NewInt(5e6)),
)
expectedShareValue := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(999999)),
sdk.NewCoin("usdx", sdk.NewInt(4999998)),
)
suite.AccountBalanceEqual(depositor, balance.Sub(expectedDeposit))
suite.ModuleAccountBalanceEqual(reserves.Add(expectedDeposit...))
suite.PoolLiquidityEqual(reserves.Add(expectedDeposit...))
suite.PoolShareValueEqual(depositor, pool, expectedShareValue)
suite.EventsContains(res.Events, sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, swap.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, depositor.GetAddress().String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
bank.EventTypeTransfer,
sdk.NewAttribute(bank.AttributeKeyRecipient, swapModuleAccountAddress.String()),
sdk.NewAttribute(bank.AttributeKeySender, depositor.GetAddress().String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, expectedDeposit.String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
swap.EventTypeSwapDeposit,
sdk.NewAttribute(swap.AttributeKeyPoolID, swap.PoolID(pool.TokenA, pool.TokenB)),
sdk.NewAttribute(swap.AttributeKeyDepositor, depositor.GetAddress().String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, expectedDeposit.String()),
sdk.NewAttribute(swap.AttributeKeyShares, "2236067"),
))
}
func (suite *handlerTestSuite) TestDeposit_ExistingPool_SlippageFailure() {
reserves := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(10e6)),
sdk.NewCoin("usdx", sdk.NewInt(50e6)),
)
err := suite.CreatePool(reserves)
suite.Require().NoError(err)
balance := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(5e6)),
sdk.NewCoin("usdx", sdk.NewInt(5e6)),
)
depositor := suite.CreateAccount(balance)
deposit := swap.NewMsgDeposit(
depositor.GetAddress(),
sdk.NewCoin("usdx", depositor.GetCoins().AmountOf("usdx")),
sdk.NewCoin("ukava", depositor.GetCoins().AmountOf("ukava")),
sdk.MustNewDecFromStr("0.01"),
time.Now().Add(10*time.Minute).Unix(),
)
res, err := suite.handler(suite.Ctx, deposit)
suite.EqualError(err, "slippage exceeded: slippage 4.000000000000000000 > limit 0.010000000000000000")
suite.Nil(res)
}
func (suite *handlerTestSuite) TestWithdraw_AllShares() {
reserves := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(10e6)),
sdk.NewCoin("usdx", sdk.NewInt(50e6)),
)
depositor := suite.CreateAccount(reserves)
pool := swap.NewAllowedPool(reserves[0].Denom, reserves[1].Denom)
suite.Require().NoError(pool.Validate())
suite.Keeper.SetParams(suite.Ctx, swap.NewParams(swap.NewAllowedPools(pool), swap.DefaultSwapFee))
err := suite.Keeper.Deposit(suite.Ctx, depositor.GetAddress(), reserves[0], reserves[1], sdk.MustNewDecFromStr("1"))
suite.Require().NoError(err)
withdraw := swap.NewMsgWithdraw(
depositor.GetAddress(),
sdk.NewInt(22360679),
reserves[0],
reserves[1],
time.Now().Add(10*time.Minute).Unix(),
)
ctx := suite.App.NewContext(true, abci.Header{Height: 1, Time: tmtime.Now()})
res, err := suite.handler(ctx, withdraw)
suite.Require().NoError(err)
suite.AccountBalanceEqual(depositor, reserves)
suite.ModuleAccountBalanceEqual(sdk.Coins(nil))
suite.PoolDeleted("ukava", "usdx")
suite.PoolSharesDeleted(depositor.GetAddress(), "ukava", "usdx")
suite.EventsContains(res.Events, sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, swap.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, depositor.GetAddress().String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
bank.EventTypeTransfer,
sdk.NewAttribute(bank.AttributeKeyRecipient, depositor.GetAddress().String()),
sdk.NewAttribute(bank.AttributeKeySender, swapModuleAccountAddress.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, reserves.String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
swap.EventTypeSwapWithdraw,
sdk.NewAttribute(swap.AttributeKeyPoolID, swap.PoolID(pool.TokenA, pool.TokenB)),
sdk.NewAttribute(swap.AttributeKeyOwner, depositor.GetAddress().String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, reserves.String()),
sdk.NewAttribute(swap.AttributeKeyShares, "22360679"),
))
}
func (suite *handlerTestSuite) TestWithdraw_PartialShares() {
reserves := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(10e6)),
sdk.NewCoin("usdx", sdk.NewInt(50e6)),
)
depositor := suite.CreateAccount(reserves)
pool := swap.NewAllowedPool(reserves[0].Denom, reserves[1].Denom)
suite.Require().NoError(pool.Validate())
suite.Keeper.SetParams(suite.Ctx, swap.NewParams(swap.NewAllowedPools(pool), swap.DefaultSwapFee))
err := suite.Keeper.Deposit(suite.Ctx, depositor.GetAddress(), reserves[0], reserves[1], sdk.MustNewDecFromStr("1"))
suite.Require().NoError(err)
minTokenA := sdk.NewCoin("ukava", sdk.NewInt(4999999))
minTokenB := sdk.NewCoin("usdx", sdk.NewInt(24999998))
withdraw := swap.NewMsgWithdraw(
depositor.GetAddress(),
sdk.NewInt(11180339),
minTokenA,
minTokenB,
time.Now().Add(10*time.Minute).Unix(),
)
ctx := suite.App.NewContext(true, abci.Header{Height: 1, Time: tmtime.Now()})
res, err := suite.handler(ctx, withdraw)
suite.Require().NoError(err)
expectedCoinsReceived := sdk.NewCoins(minTokenA, minTokenB)
suite.AccountBalanceEqual(depositor, expectedCoinsReceived)
suite.ModuleAccountBalanceEqual(reserves.Sub(expectedCoinsReceived))
suite.PoolLiquidityEqual(reserves.Sub(expectedCoinsReceived))
suite.PoolShareValueEqual(depositor, swap.NewAllowedPool("ukava", "usdx"), reserves.Sub(expectedCoinsReceived))
suite.EventsContains(res.Events, sdk.NewEvent(
sdk.EventTypeMessage,
sdk.NewAttribute(sdk.AttributeKeyModule, swap.AttributeValueCategory),
sdk.NewAttribute(sdk.AttributeKeySender, depositor.GetAddress().String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
bank.EventTypeTransfer,
sdk.NewAttribute(bank.AttributeKeyRecipient, depositor.GetAddress().String()),
sdk.NewAttribute(bank.AttributeKeySender, swapModuleAccountAddress.String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, expectedCoinsReceived.String()),
))
suite.EventsContains(res.Events, sdk.NewEvent(
swap.EventTypeSwapWithdraw,
sdk.NewAttribute(swap.AttributeKeyPoolID, swap.PoolID(pool.TokenA, pool.TokenB)),
sdk.NewAttribute(swap.AttributeKeyOwner, depositor.GetAddress().String()),
sdk.NewAttribute(sdk.AttributeKeyAmount, expectedCoinsReceived.String()),
sdk.NewAttribute(swap.AttributeKeyShares, "11180339"),
))
}
func (suite *handlerTestSuite) TestWithdraw_SlippageFailure() {
reserves := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(10e6)),
sdk.NewCoin("usdx", sdk.NewInt(50e6)),
)
depositor := suite.CreateAccount(reserves)
pool := swap.NewAllowedPool(reserves[0].Denom, reserves[1].Denom)
suite.Require().NoError(pool.Validate())
suite.Keeper.SetParams(suite.Ctx, swap.NewParams(swap.NewAllowedPools(pool), swap.DefaultSwapFee))
err := suite.Keeper.Deposit(suite.Ctx, depositor.GetAddress(), reserves[0], reserves[1], sdk.MustNewDecFromStr("1"))
suite.Require().NoError(err)
minTokenA := sdk.NewCoin("ukava", sdk.NewInt(5e6))
minTokenB := sdk.NewCoin("usdx", sdk.NewInt(25e6))
withdraw := swap.NewMsgWithdraw(
depositor.GetAddress(),
sdk.NewInt(11180339),
minTokenA,
minTokenB,
time.Now().Add(10*time.Minute).Unix(),
)
res, err := suite.handler(suite.Ctx, withdraw)
suite.EqualError(err, "slippage exceeded: minimum withdraw not met")
suite.Nil(res)
}
func (suite *handlerTestSuite) TestWithdraw_DeadlineExceeded() {
balance := sdk.NewCoins(
sdk.NewCoin("ukava", sdk.NewInt(10e6)),
sdk.NewCoin("usdx", sdk.NewInt(50e6)),
)
from := suite.CreateAccount(balance)
withdraw := swap.NewMsgWithdraw(
from.GetAddress(),
sdk.NewInt(2e6),
sdk.NewCoin("ukava", sdk.NewInt(1e6)),
sdk.NewCoin("usdx", sdk.NewInt(5e6)),
suite.Ctx.BlockTime().Add(-1*time.Second).Unix(),
)
res, err := suite.handler(suite.Ctx, withdraw)
suite.EqualError(err, fmt.Sprintf("deadline exceeded: block time %d >= deadline %d", suite.Ctx.BlockTime().Unix(), withdraw.GetDeadline().Unix()))
suite.Nil(res)
}
func (suite *handlerTestSuite) TestInvalidMsg() {
res, err := suite.handler(suite.Ctx, sdk.NewTestMsg())
suite.Nil(res)
suite.EqualError(err, "unknown request: unrecognized swap message type: *types.TestMsg")
}
func TestHandlerTestSuite(t *testing.T) {
suite.Run(t, new(handlerTestSuite))
}
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