forked from cerc-io/ipld-eth-server
73 lines
2.2 KiB
Go
73 lines
2.2 KiB
Go
package pep_test
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import (
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/fakes"
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"github.com/vulcanize/vulcanizedb/pkg/transformers/pep"
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"math/big"
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)
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var _ = Describe("Pep fetcher", func() {
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It("calls contract to peek mkr/usd value", func() {
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mockBlockChain := fakes.NewMockBlockChain()
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mockBlockChain.SetGetEthLogsWithCustomQueryReturnLogs([]types.Log{{}})
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fetcher := pep.NewPepFetcher(mockBlockChain)
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blockNumber := int64(100)
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header := core.Header{
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BlockNumber: blockNumber,
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Hash: "",
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Raw: nil,
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}
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_, err := fetcher.FetchPepValue(header)
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Expect(err).NotTo(HaveOccurred())
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expectedQuery := ethereum.FilterQuery{
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FromBlock: big.NewInt(blockNumber),
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ToBlock: big.NewInt(blockNumber),
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Addresses: []common.Address{common.HexToAddress(pep.PepAddress)},
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Topics: [][]common.Hash{{common.HexToHash(pep.LogValueTopic0)}},
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}
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mockBlockChain.AssertGetEthLogsWithCustomQueryCalledWith(expectedQuery)
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})
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It("returns error if contract call fails", func() {
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mockBlockChain := fakes.NewMockBlockChain()
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mockBlockChain.SetGetEthLogsWithCustomQueryReturnLogs([]types.Log{{}})
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mockBlockChain.SetGetEthLogsWithCustomQueryErr(fakes.FakeError)
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fetcher := pep.NewPepFetcher(mockBlockChain)
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_, err := fetcher.FetchPepValue(core.Header{})
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Expect(err).To(HaveOccurred())
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Expect(err).To(MatchError(fakes.FakeError))
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})
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It("returns no matching logs error if no logs returned", func() {
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mockBlockChain := fakes.NewMockBlockChain()
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fetcher := pep.NewPepFetcher(mockBlockChain)
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_, err := fetcher.FetchPepValue(core.Header{})
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Expect(err).To(HaveOccurred())
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Expect(err).To(MatchError(pep.ErrNoMatchingLog))
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})
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It("returns error if more than one matching logs returned", func() {
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mockBlockChain := fakes.NewMockBlockChain()
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mockBlockChain.SetGetEthLogsWithCustomQueryReturnLogs([]types.Log{{}, {}})
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fetcher := pep.NewPepFetcher(mockBlockChain)
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_, err := fetcher.FetchPepValue(core.Header{})
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Expect(err).To(HaveOccurred())
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Expect(err).To(MatchError(pep.ErrMultipleLogs))
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})
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})
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