github.com/cosmos/cosmos-sdk@v0.50.10/x/mint/simulation/genesis_test.go (about)

     1  package simulation_test
     2  
     3  import (
     4  	"encoding/json"
     5  	"math/rand"
     6  	"testing"
     7  
     8  	"github.com/stretchr/testify/require"
     9  
    10  	"cosmossdk.io/math"
    11  
    12  	sdk "github.com/cosmos/cosmos-sdk/types"
    13  	"github.com/cosmos/cosmos-sdk/types/module"
    14  	moduletestutil "github.com/cosmos/cosmos-sdk/types/module/testutil"
    15  	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
    16  	"github.com/cosmos/cosmos-sdk/x/mint"
    17  	"github.com/cosmos/cosmos-sdk/x/mint/simulation"
    18  	"github.com/cosmos/cosmos-sdk/x/mint/types"
    19  )
    20  
    21  // TestRandomizedGenState tests the normal scenario of applying RandomizedGenState.
    22  // Abonormal scenarios are not tested here.
    23  func TestRandomizedGenState(t *testing.T) {
    24  	encCfg := moduletestutil.MakeTestEncodingConfig(mint.AppModuleBasic{})
    25  
    26  	s := rand.NewSource(1)
    27  	r := rand.New(s)
    28  
    29  	simState := module.SimulationState{
    30  		AppParams:    make(simtypes.AppParams),
    31  		Cdc:          encCfg.Codec,
    32  		Rand:         r,
    33  		NumBonded:    3,
    34  		BondDenom:    sdk.DefaultBondDenom,
    35  		Accounts:     simtypes.RandomAccounts(r, 3),
    36  		InitialStake: math.NewInt(1000),
    37  		GenState:     make(map[string]json.RawMessage),
    38  	}
    39  
    40  	simulation.RandomizedGenState(&simState)
    41  
    42  	var mintGenesis types.GenesisState
    43  	simState.Cdc.MustUnmarshalJSON(simState.GenState[types.ModuleName], &mintGenesis)
    44  
    45  	dec1, _ := math.LegacyNewDecFromStr("0.670000000000000000")
    46  	dec2, _ := math.LegacyNewDecFromStr("0.200000000000000000")
    47  	dec3, _ := math.LegacyNewDecFromStr("0.070000000000000000")
    48  
    49  	require.Equal(t, uint64(6311520), mintGenesis.Params.BlocksPerYear)
    50  	require.Equal(t, dec1, mintGenesis.Params.GoalBonded)
    51  	require.Equal(t, dec2, mintGenesis.Params.InflationMax)
    52  	require.Equal(t, dec3, mintGenesis.Params.InflationMin)
    53  	require.Equal(t, "stake", mintGenesis.Params.MintDenom)
    54  	require.Equal(t, "0stake", mintGenesis.Minter.BlockProvision(mintGenesis.Params).String())
    55  	require.Equal(t, "0.170000000000000000", mintGenesis.Minter.NextAnnualProvisions(mintGenesis.Params, math.OneInt()).String())
    56  	require.Equal(t, "0.169999926644441493", mintGenesis.Minter.NextInflationRate(mintGenesis.Params, math.LegacyOneDec()).String())
    57  	require.Equal(t, "0.170000000000000000", mintGenesis.Minter.Inflation.String())
    58  	require.Equal(t, "0.000000000000000000", mintGenesis.Minter.AnnualProvisions.String())
    59  }
    60  
    61  // TestRandomizedGenState tests abnormal scenarios of applying RandomizedGenState.
    62  func TestRandomizedGenState1(t *testing.T) {
    63  	encCfg := moduletestutil.MakeTestEncodingConfig(mint.AppModuleBasic{})
    64  
    65  	s := rand.NewSource(1)
    66  	r := rand.New(s)
    67  	// all these tests will panic
    68  	tests := []struct {
    69  		simState module.SimulationState
    70  		panicMsg string
    71  	}{
    72  		{ // panic => reason: incomplete initialization of the simState
    73  			module.SimulationState{}, "invalid memory address or nil pointer dereference"},
    74  		{ // panic => reason: incomplete initialization of the simState
    75  			module.SimulationState{
    76  				AppParams: make(simtypes.AppParams),
    77  				Cdc:       encCfg.Codec,
    78  				Rand:      r,
    79  			}, "assignment to entry in nil map"},
    80  	}
    81  
    82  	for _, tt := range tests {
    83  		require.Panicsf(t, func() { simulation.RandomizedGenState(&tt.simState) }, tt.panicMsg)
    84  	}
    85  }