ipld-eth-server/pkg/transformers/shared/log_fetcher_test.go

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// Copyright 2018 Vulcanize
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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package shared_test
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import (
"math/big"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/vulcanize/vulcanizedb/pkg/fakes"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
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)
var _ = Describe("Fetcher", func() {
Describe("FetchLogs", func() {
It("fetches logs based on the given query", func() {
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blockChain := fakes.NewMockBlockChain()
fetcher := shared.NewFetcher(blockChain)
blockNumber := int64(123)
address := "0xfakeAddress"
topicZeros := [][]common.Hash{{common.BytesToHash([]byte{1, 2, 3, 4, 5})}}
_, err := fetcher.FetchLogs(address, topicZeros, blockNumber)
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Expect(err).NotTo(HaveOccurred())
expectedQuery := ethereum.FilterQuery{
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FromBlock: big.NewInt(blockNumber),
ToBlock: big.NewInt(blockNumber),
Addresses: []common.Address{common.HexToAddress(address)},
Topics: topicZeros,
}
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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)
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fetcher := shared.NewFetcher(blockChain)
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_, err := fetcher.FetchLogs("", [][]common.Hash{}, int64(1))
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Expect(err).To(HaveOccurred())
Expect(err).To(MatchError(fakes.FakeError))
})
})
})