ipld-eth-server/libraries/shared/fetcher/log_fetcher_test.go

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// VulcanizeDB
// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package fetcher_test
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import (
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
fetch "github.com/vulcanize/vulcanizedb/libraries/shared/fetcher"
"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/fakes"
)
var _ = Describe("Fetcher", func() {
Describe("FetchLogs", func() {
It("fetches logs based on the given query", func() {
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blockChain := fakes.NewMockBlockChain()
fetcher := fetch.NewFetcher(blockChain)
header := fakes.FakeHeader
addresses := []common.Address{
common.HexToAddress("0xfakeAddress"),
common.HexToAddress("0xanotherFakeAddress"),
}
topicZeros := []common.Hash{common.BytesToHash([]byte{1, 2, 3, 4, 5})}
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_, err := fetcher.FetchLogs(addresses, topicZeros, header)
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address1 := common.HexToAddress("0xfakeAddress")
address2 := common.HexToAddress("0xanotherFakeAddress")
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Expect(err).NotTo(HaveOccurred())
blockHash := common.HexToHash(header.Hash)
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expectedQuery := ethereum.FilterQuery{
BlockHash: &blockHash,
Addresses: []common.Address{address1, address2},
Topics: [][]common.Hash{topicZeros},
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}
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blockChain.AssertGetEthLogsWithCustomQueryCalledWith(expectedQuery)
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})
It("returns an error if fetching the logs fails", func() {
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blockChain := fakes.NewMockBlockChain()
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blockChain.SetGetEthLogsWithCustomQueryErr(fakes.FakeError)
fetcher := fetch.NewFetcher(blockChain)
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_, err := fetcher.FetchLogs([]common.Address{}, []common.Hash{}, core.Header{})
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Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
})
})