From d6e0888ea6b24c56b25acb1e2127c7fff4603b37 Mon Sep 17 00:00:00 2001
From: dauTT <dautruongtan@gmail.com>
Date: Sun, 12 Jul 2020 04:15:31 +0200
Subject: [PATCH] Merge PR #6692: x/staking/simulation/genesis.go: add unit
 tests

---
 x/staking/simulation/genesis_test.go | 99 ++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 x/staking/simulation/genesis_test.go

diff --git a/x/staking/simulation/genesis_test.go b/x/staking/simulation/genesis_test.go
new file mode 100644
index 0000000000..4830ede133
--- /dev/null
+++ b/x/staking/simulation/genesis_test.go
@@ -0,0 +1,99 @@
+package simulation_test
+
+import (
+	"encoding/json"
+	"math/rand"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/cosmos/cosmos-sdk/codec"
+	"github.com/cosmos/cosmos-sdk/types/module"
+	simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
+	"github.com/cosmos/cosmos-sdk/x/staking/simulation"
+	"github.com/cosmos/cosmos-sdk/x/staking/types"
+)
+
+// TestRandomizedGenState tests the normal scenario of applying RandomizedGenState.
+// Abonormal scenarios are not tested here.
+func TestRandomizedGenState(t *testing.T) {
+	cdc := codec.New()
+	s := rand.NewSource(1)
+	r := rand.New(s)
+
+	simState := module.SimulationState{
+		AppParams: make(simtypes.AppParams),
+		Cdc:       cdc,
+		Rand:      r,
+		NumBonded: 3,
+		Accounts:     simtypes.RandomAccounts(r, 3),
+		InitialStake: 1000,
+		GenState:     make(map[string]json.RawMessage),
+	}
+
+	simulation.RandomizedGenState(&simState)
+
+	var stakingGenesis types.GenesisState
+	simState.Cdc.MustUnmarshalJSON(simState.GenState[types.ModuleName], &stakingGenesis)
+
+	require.Equal(t, uint32(207), stakingGenesis.Params.MaxValidators)
+	require.Equal(t, uint32(7), stakingGenesis.Params.MaxEntries)
+	require.Equal(t, uint32(48), stakingGenesis.Params.HistoricalEntries)
+	require.Equal(t, "stake", stakingGenesis.Params.BondDenom)
+	require.Equal(t, float64(238280), stakingGenesis.Params.UnbondingTime.Seconds())
+	// check numbers of Delegations and Validators
+	require.Len(t, stakingGenesis.Delegations, 3)
+	require.Len(t, stakingGenesis.Validators, 3)
+	// check Delegations
+	require.Equal(t, "cosmos1tnh2q55v8wyygtt9srz5safamzdengsnqeycj3", stakingGenesis.Delegations[0].DelegatorAddress.String())
+	require.Equal(t, "cosmosvaloper1tnh2q55v8wyygtt9srz5safamzdengsn9dsd7z", stakingGenesis.Delegations[0].ValidatorAddress.String())
+	require.Equal(t, "1000.000000000000000000", stakingGenesis.Delegations[0].Shares.String())
+	// check validators
+	require.Equal(t, "cosmosvaloper1ghekyjucln7y67ntx7cf27m9dpuxxemnsvnaes", stakingGenesis.Validators[2].OperatorAddress.String())
+	require.Equal(t, "cosmosvalconspub1addwnpepqwr8k5g44urevkvz5ys2qjag0nnp6xkd2f8lejn5pw2rehkjt6ftv5d9nrp", stakingGenesis.Validators[2].ConsensusPubkey)
+	require.Equal(t, false, stakingGenesis.Validators[2].Jailed)
+	require.Equal(t, "Unbonded", stakingGenesis.Validators[2].Status.String())
+	require.Equal(t, "1000", stakingGenesis.Validators[2].Tokens.String())
+	require.Equal(t, "1000.000000000000000000", stakingGenesis.Validators[2].DelegatorShares.String())
+	require.Equal(t, "0.292059246265731326", stakingGenesis.Validators[2].Commission.CommissionRates.Rate.String())
+	require.Equal(t, "0.330000000000000000", stakingGenesis.Validators[2].Commission.CommissionRates.MaxRate.String())
+	require.Equal(t, "0.038337453731274481", stakingGenesis.Validators[2].Commission.CommissionRates.MaxChangeRate.String())
+	require.Equal(t, "1", stakingGenesis.Validators[2].MinSelfDelegation.String())
+}
+
+// TestRandomizedGenState tests abnormal scenarios of applying RandomizedGenState.
+func TestRandomizedGenState1(t *testing.T) {
+	cdc := codec.New()
+
+	s := rand.NewSource(1)
+	r := rand.New(s)
+	// all these tests will panic
+	tests := []struct {
+		simState module.SimulationState
+		panicMsg string
+	}{
+		{ // panic => reason: incomplete initialization of the simState
+			module.SimulationState{}, "invalid memory address or nil pointer dereference"},
+		{ // panic => reason: incomplete initialization of the simState
+			module.SimulationState{
+				AppParams: make(simtypes.AppParams),
+				Cdc:       cdc,
+				Rand:      r,
+			}, "invalid memory address or nil pointer dereference"},
+		{
+			// panic => reason: numBonded != len(Accnounts)
+			module.SimulationState{
+				AppParams:    make(simtypes.AppParams),
+				Cdc:          cdc,
+				Rand:         r,
+				NumBonded:    4,
+				Accounts:     simtypes.RandomAccounts(r, 3),
+				InitialStake: 1000,
+				GenState:     make(map[string]json.RawMessage),
+			}, "invalid memory address or nil pointer dereference"},
+	}
+
+	for _, tt := range tests {
+		require.Panicsf(t, func() { simulation.RandomizedGenState(&tt.simState) }, tt.panicMsg)
+	}
+}