ethertest/contract_test.go at master · tokencard/ethertest · GitHub

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package ethertest_test

import (
	"context"
	"fmt"
	"os"
	"testing"
	"time"

	"github.com/ethereum/go-ethereum/core/types"
	"github.com/stretchr/testify/require"
	"github.com/tokencard/ethertest"
	"github.com/tokencard/ethertest/test/bindings"
)

func TestContract(t *testing.T) {
	var tr = ethertest.NewTestRig()
	var owner = ethertest.NewAccount()

	tr.AddGenesisAccountAllocation(owner.Address(), ethertest.EthToWei(100))
	tr.AddCoverageForContracts("./test/build/test/combined.json", "test/contracts")

	require := require.New(t)
	be := tr.NewTestBackend(ethertest.WithBlockGasLimit(8000000), ethertest.WithBlockchainTime(time.Now().Add(-24*time.Hour)))
	_, tx, testBinding, err := bindings.DeployTest(owner.TransactOpts(), be, "initial value")
	require.Nil(err)
	be.Commit()

	receipt, err := be.TransactionReceipt(context.Background(), tx.Hash())
	require.Nil(err)
	require.Equal(types.ReceiptStatusSuccessful, receipt.Status)

	tx, err = testBinding.SetValue(owner.TransactOpts(), "new value")
	require.Nil(err)
	be.Commit()

	successful, err := ethertest.IsSuccessful(be, tx)
	require.Nil(err)
	require.True(successful)

	require.Nil(be.Close())

	value, err := testBinding.Value(nil)
	require.Nil(err)
	require.Equal("new value", value)

	err = testBinding.WillFail(nil)
	require.NotNil(err)

	tr.SaveTrace(os.Stdout)
	tr.ExpectMinimumCoverage("subdir/super.sol", 100.0)
	tr.ExpectMinimumCoverage("test.sol", 100.0)
	tr.PrintGasUsage(os.Stdout)
	fmt.Println(tr.LastExecuted())

	require.Equal(int64(2), be.Blockchain().CurrentHeader().Number.Int64())
}