test: draft of keeper/genesis tests to discuss (cosmos#102)

* test: draft of keeper/genesis tests to discuss

* refactor: combine mutually inclusive init/export genesis tests

x/airdrop/keeper/genesis_test.go

@@ -0,0 +1,64 @@
+package keeper_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/cosmos/cosmos-sdk/simapp"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/x/airdrop/types"
+	"github.com/stretchr/testify/suite"
+	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
+)
+
+var (
+	addr = sdk.AccAddress([]byte("addr________________"))
+)
+
+type GenesisTestSuite struct {
+	suite.Suite
+
+	app *simapp.SimApp
+	ctx sdk.Context
+}
+
+func (s *GenesisTestSuite) SetupTest() {
+	app := simapp.Setup(false)
+	s.app = app
+	s.ctx = app.BaseApp.NewContext(false, tmproto.Header{
+		Time:   time.Now(),
+		Height: 10,
+	})
+
+	s.app.AirdropKeeper.SetParams(s.ctx, types.NewParams(addr.String()))
+}
+
+func (s *GenesisTestSuite) TestInitAndExportGenesis() {
+	p := types.Params{
+		AllowList: []string{
+			addr.String(),
+		},
+	}
+	funds := []types.ActiveFund{
+		{
+			Sender: addr.String(),
+			Fund: &types.Fund{
+				Amount: &sdk.Coin{
+					Denom:  "test",
+					Amount: sdk.NewInt(10),
+				},
+				DripAmount: sdk.NewInt(1),
+			},
+		},
+	}
+	genState := types.NewGenesisState(p, funds)
+	s.app.AirdropKeeper.InitGenesis(s.ctx, genState)
+	actualFunds, _ := s.app.AirdropKeeper.GetActiveFunds(s.ctx)
+	s.Require().Equal(s.app.AirdropKeeper.GetParams(s.ctx), p)
+	s.Require().Equal(funds, actualFunds)
+	s.Require().Equal(s.app.AirdropKeeper.ExportGenesis(s.ctx), genState)
+}
+
+func TestGenesisTestSuite(t *testing.T) {
+	suite.Run(t, new(GenesisTestSuite))
+}