0g-chain/x/savings/keeper/invariants_test.go

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package keeper_test
import (
"testing"
"github.com/stretchr/testify/suite"
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
tmtime "github.com/tendermint/tendermint/types/time"
sdk "github.com/cosmos/cosmos-sdk/types"
bankkeeper "github.com/cosmos/cosmos-sdk/x/bank/keeper"
"github.com/kava-labs/kava/app"
"github.com/kava-labs/kava/x/savings/keeper"
"github.com/kava-labs/kava/x/savings/types"
)
type invariantTestSuite struct {
suite.Suite
tApp app.TestApp
ctx sdk.Context
keeper keeper.Keeper
bankKeeper bankkeeper.Keeper
addrs []sdk.AccAddress
invariants map[string]map[string]sdk.Invariant
}
func (suite *invariantTestSuite) SetupTest() {
config := sdk.GetConfig()
app.SetBech32AddressPrefixes(config)
tApp := app.NewTestApp()
ctx := tApp.NewContext(true, tmproto.Header{Height: 1, Time: tmtime.Now()})
_, addrs := app.GeneratePrivKeyAddressPairs(1)
suite.addrs = addrs
suite.tApp = tApp
suite.ctx = ctx
suite.keeper = tApp.GetSavingsKeeper()
suite.bankKeeper = tApp.GetBankKeeper()
suite.invariants = make(map[string]map[string]sdk.Invariant)
keeper.RegisterInvariants(suite, suite.keeper)
}
func (suite *invariantTestSuite) RegisterRoute(moduleName string, route string, invariant sdk.Invariant) {
_, exists := suite.invariants[moduleName]
if !exists {
suite.invariants[moduleName] = make(map[string]sdk.Invariant)
}
suite.invariants[moduleName][route] = invariant
}
func (suite *invariantTestSuite) SetupValidState() {
depositAmt := sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(2e8)))
suite.keeper.SetDeposit(suite.ctx, types.NewDeposit(
suite.addrs[0],
depositAmt,
))
err := suite.tApp.FundModuleAccount(suite.ctx, types.ModuleName, depositAmt)
suite.Require().NoError(err)
}
func (suite *invariantTestSuite) runInvariant(route string, invariant func(k keeper.Keeper) sdk.Invariant) (string, bool) {
ctx := suite.ctx
registeredInvariant := suite.invariants[types.ModuleName][route]
suite.Require().NotNil(registeredInvariant)
// direct call
dMessage, dBroken := invariant(suite.keeper)(ctx)
// registered call
rMessage, rBroken := registeredInvariant(ctx)
// all call
aMessage, aBroken := keeper.AllInvariants(suite.keeper)(ctx)
// require matching values for direct call and registered call
suite.Require().Equal(dMessage, rMessage, "expected registered invariant message to match")
suite.Require().Equal(dBroken, rBroken, "expected registered invariant broken to match")
// require matching values for direct call and all invariants call if broken
suite.Require().Equal(dBroken, aBroken, "expected all invariant broken to match")
if dBroken {
suite.Require().Equal(dMessage, aMessage, "expected all invariant message to match")
}
// return message, broken
return dMessage, dBroken
}
func (suite *invariantTestSuite) TestDepositsInvariant() {
message, broken := suite.runInvariant("deposits", keeper.DepositsInvariant)
suite.Equal("savings: validate deposits broken invariant\ndeposit invalid\n", message)
suite.Equal(false, broken)
suite.SetupValidState()
message, broken = suite.runInvariant("deposits", keeper.DepositsInvariant)
suite.Equal("savings: validate deposits broken invariant\ndeposit invalid\n", message)
suite.Equal(false, broken)
// broken with invalid deposit
suite.keeper.SetDeposit(suite.ctx, types.NewDeposit(
suite.addrs[0],
sdk.Coins{},
))
message, broken = suite.runInvariant("deposits", keeper.DepositsInvariant)
suite.Equal("savings: validate deposits broken invariant\ndeposit invalid\n", message)
suite.Equal(true, broken)
}
func (suite *invariantTestSuite) TestSolvencyInvariant() {
message, broken := suite.runInvariant("solvency", keeper.SolvencyInvariant)
suite.Equal("savings: module solvency broken invariant\ntotal deposited amount does not match module account\n", message)
suite.Equal(false, broken)
suite.SetupValidState()
message, broken = suite.runInvariant("solvency", keeper.SolvencyInvariant)
suite.Equal("savings: module solvency broken invariant\ntotal deposited amount does not match module account\n", message)
suite.Equal(false, broken)
// broken when deposits are greater than module balance
suite.keeper.SetDeposit(suite.ctx, types.NewDeposit(
suite.addrs[0],
sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(3e8))),
))
message, broken = suite.runInvariant("solvency", keeper.SolvencyInvariant)
suite.Equal("savings: module solvency broken invariant\ntotal deposited amount does not match module account\n", message)
suite.Equal(true, broken)
// broken when deposits are less than the module balance
suite.keeper.SetDeposit(suite.ctx, types.NewDeposit(
suite.addrs[0],
sdk.NewCoins(sdk.NewCoin("ukava", sdk.NewInt(1e8))),
))
message, broken = suite.runInvariant("solvency", keeper.SolvencyInvariant)
suite.Equal("savings: module solvency broken invariant\ntotal deposited amount does not match module account\n", message)
suite.Equal(true, broken)
}
func TestInvariantTestSuite(t *testing.T) {
suite.Run(t, new(invariantTestSuite))
}