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oracle.py
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import smartpy as sp
Harbinger = sp.io.import_script_from_url("file:common.py")
# Data type that represents a signed update to the Oracle.
SignedOracleDataType = sp.TPair(sp.TSignature, Harbinger.OracleDataType)
#####################################################################
# An Oracle contract accepts signed updates for a list of assets.
#
# Oracles are configured with a list of assets whose updates they
# track and a public key which will verify signatures on the asset
# data.
#
# Anyone may update the Oracle with properly signed data. Signatures
# for the oracle are provided by signing the packed bytes of the
# following Michelson data:
# 'pair <asset code | string> (pair <start | timestamp> (pair <end | timestamp> (pair <nat | open> (pair <nat | high> (pair <nat low> (pair <close | nat> <volume | nat>))))))'
#
# Anyone can request the Oracle push its data to another contract. Pushed
# data should generally be pushed to a Normalizer contract rather than
# consumed directly.
#
# Oracles can be revoked by calling the revoke entry point with the
# signature for bytes representing an Option(Key) Michelson type with
# value none. After revocation, the Oracle will refuse to process
# further updates.
#
# Updates to the Oracle must be monotonically increasing in start time.
#
# Values in the Oracle are represented as a natural numbers with six
# digits of precision. For instance $123.45 USD would be represented
# as 123_450_000.
#####################################################################
class OracleContract(sp.Contract):
# Initialze a new oracle.
#
# Parameters:
# publicKey(sp.TKey): The public key used to verify Oracle updates.
# initialData(sp.TBigMap(sp.TString, TezosOracle.OracleDataType)): A map of initial values for the Oracle.
def __init__(
self,
publicKey=sp.some(
sp.key("sppk7bkCcE4TZwnqqR7JAKJBybJ2XTCbKZu11ESTvvZQYtv3HGiiffN")),
initialData=sp.big_map(
l={
"XTZ-USD": (sp.timestamp(0), (sp.timestamp(0), (0, (0, (0, (0, 0))))))
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
):
self.init(
publicKey=publicKey,
oracleData=initialData
)
# Update the Oracle.
#
# The parameter is a map of asset codes to a pair of signatures and oracle data.
# The signature specification is described in the header of this file.
#
# Updates must be monotonically increasing in start time.
#
# An example parameter looks like:
# { elt <asset code | string> (pair <signature | signature> (pair <start | timestamp> (pair <end | timestamp> (pair <open | nat> (pair <high | nat> (pair <low | nat> (pair <close | nat> <volume | nat>)))))))'
@sp.entry_point
def update(self, params):
# If there is no value for the public key, the oracle is revoked. Ignore updates.
sp.verify(self.data.publicKey.is_some(), "revoked")
# Iterate over assets in the input map.
keyValueList = params.items()
sp.for assetData in keyValueList:
# Extract asset names, signatures, and the new data.
assetName = assetData.key
signature = sp.compute(sp.fst(assetData.value))
newData = sp.compute(sp.snd(assetData.value))
# Verify Oracle is tracking this asset.
sp.if self.data.oracleData.contains(assetName):
# Verify start timestamp is newer than the last update.
oldData = sp.compute(self.data.oracleData[assetName])
oldStartTime = sp.compute(sp.fst(oldData))
newStartTime = sp.compute(sp.fst(newData))
sp.if newStartTime > oldStartTime:
# Verify signature.
bytes = sp.pack((assetName, newData))
sp.verify(
sp.check_signature(
self.data.publicKey.open_some(), signature, bytes
),
"bad sig"
)
# Replace the data.
self.data.oracleData[assetName] = newData
# Revoke the Oracle.
#
# This entrypoint is destructive and non-reversible.
#
# The parameter format is a signature of the Michelson type Option(Key) with
# value None signed by the secret key of this Oracle's public key.
#
# A successful call to this entrypoint will effectively freeze the Oracles value
# by removing the Oracle's public key, preventing future updates from arriving.
@sp.entry_point
def revoke(self, param):
# Recreate the message which should have been signed.
message = sp.set_type_expr(sp.none, sp.TOption(sp.TKey))
bytes = sp.pack(message)
# Verify that the message is signed correctly.
publicKey = self.data.publicKey.open_some()
sp.verify(sp.check_signature(publicKey, param, bytes))
# Revoke the Oracle's public Key.
self.data.publicKey = sp.none
# Remove all entries in the Oracle's map.
self.data.oracleData = sp.big_map(
l={},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
# Push the data for the Oracle to another contract.
#
# The parameter is a contract to push the data to.
@sp.entry_point
def push(self, contract):
sp.transfer(self.data.oracleData, sp.mutez(0), contract)
# Returns the data in the Oracle for the given asset in an onchain view..
#
# The data returned is a price candle given in nested pairs with the following components:
# - timestamp - candle start time
# - timestamp - candle end time
# - nat - open price
# - nat - high price
# - nat - low price
# - nat - close price
# - nat - volume
#
# Values represented as a natural number with six digits of precision. For instance $123.45 USD would be represented
# as 123_450_000.
#
# Parameters: The of the asset code (ex. XTZ-USD)
@sp.onchain_view()
def getPrice(self, assetCode):
sp.set_type(assetCode, sp.TString)
# Verify this normalizer has data for the requested asset.
sp.verify(
self.data.oracleData.contains(assetCode),
message="bad request"
)
# Callback with the requested data.
sp.result(self.data.oracleData[assetCode])
#####################################################################
# Tests
#####################################################################
# Only run tests if this file is main.
if __name__ == "__main__":
#####################################################################
# Test Helpers
#####################################################################
# Default Oracle Contract Keys
testAccount = sp.test_account("Test1")
testAccountPublicKey = sp.some(testAccount.public_key)
testAccountSecretKey = testAccount.secret_key
# Initial data for the oracle
initialOracleData = (
sp.timestamp(0),
(
sp.timestamp(0),
(
0,
(
0,
(
0,
(
0,
0
)
)
)
)
)
)
@sp.add_test(name="Update Once With Valid Data")
def test():
scenario = sp.test_scenario()
scenario.h1("Update Once With Valid Data")
scenario.h2("GIVEN an Oracle contract")
contract = OracleContract(
publicKey=testAccountPublicKey,
)
scenario += contract
scenario.h2("AND an update")
assetCode = "XTZ-USD"
start = sp.timestamp(1)
end = sp.timestamp(2)
open = 3
high = 4
low = 5
close = 6
volume = 7
updateData = (
start,
(end,
(open,
(high,
(low,
(close, volume))))))
message = sp.pack((assetCode, updateData))
signature = sp.make_signature(
testAccountSecretKey,
message,
message_format='Raw'
)
scenario.h2("WHEN the oracle is updated")
update = sp.pair(signature, updateData)
parameter = sp.map(
l={
assetCode: update
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter)
scenario.h2("THEN the oracle contains the data points")
assetData = contract.data.oracleData["XTZ-USD"]
endPair = sp.snd(assetData)
openPair = sp.snd(endPair)
highPair = sp.snd(openPair)
lowPair = sp.snd(highPair)
closeAndVolumePair = sp.snd(lowPair)
expectedStart = sp.fst(assetData)
expectedEnd = sp.fst(endPair)
expectedOpen = sp.fst(openPair)
expectedHigh = sp.fst(highPair)
expecteLow = sp.fst(lowPair)
expectedClose = sp.fst(closeAndVolumePair)
expectedVolume = sp.snd(closeAndVolumePair)
scenario.verify(start == expectedStart)
scenario.verify(end == expectedEnd)
scenario.verify(open == expectedOpen)
scenario.verify(high == expectedHigh)
scenario.verify(low == expecteLow)
scenario.verify(close == expectedClose)
scenario.verify(volume == expectedVolume)
# TODO(keefertaylor): Enable this test
# @sp.add_test(name = "Update Once With Coinbase Data")
# def test():
# scenario = sp.test_scenario()
# scenario.h1("Update Once With Valid Data")
# scenario.h2("GIVEN an Oracle contract and data extracted from the Coinbase Oracle")
# contract = OracleContract(
# publicKey = sp.some(sp.key("sppk7bkCcE4TZwnqqR7JAKJBybJ2XTCbKZu11ESTvvZQYtv3HGiiffN"))
# )
# scenario += contract
# scenario.h2("AND an update")
# start = sp.timestamp(1595707200)
# end = sp.timestamp(1595707260)
# open = 3076200
# high = 3080400
# low = 3076200
# close = 3079200
# volume = 1923470000
# updateData = (
# start,
# (end,
# (open,
# (high,
# (low,
# (close, volume))))))
# signature = sp.signature("spsig1f8mcfVYrjqzaFfa6hT63dbzomCAPac61utM5iv7bE6fpVXKLpaeLkZXNWqPvtRV8z2GW8gBPzsU9jV2CJiEA8sXkD4qht")
# scenario.h2("WHEN the oracle is updated")
# update = sp.pair(signature, updateData)
# parameter = sp.map(
# l = {
# "XTZ-USD": update
# },
# tkey = sp.TString,
# tvalue = SignedOracleDataType
# )
# scenario += contract.update(parameter)
# scenario.h2("THEN the oracle contains the data points")
# assetData = contract.data.oracleData["XTZ-USD"]
# endPair = sp.snd(assetData)
# openPair = sp.snd(endPair)
# highPair = sp.snd(openPair)
# lowPair = sp.snd(highPair)
# closeAndVolumePair = sp.snd(lowPair)
# expectedStart = sp.fst(assetData)
# expectedEnd = sp.fst(endPair)
# expectedOpen = sp.fst(openPair)
# expectedHigh = sp.fst(highPair)
# expecteLow = sp.fst(lowPair)
# expectedClose = sp.fst(closeAndVolumePair)
# expectedVolume = sp.snd(closeAndVolumePair)
# scenario.verify(start == expectedStart)
# scenario.verify(end == expectedEnd)
# scenario.verify(open == expectedOpen)
# scenario.verify(high == expectedHigh)
# scenario.verify(low == expecteLow)
# scenario.verify(close == expectedClose)
# scenario.verify(volume == expectedVolume)
@sp.add_test(name="Second Update Overwrites First Update")
def test():
scenario = sp.test_scenario()
scenario.h1("Second Update Overwrites First Update")
scenario.h2("GIVEN an Oracle contract")
assetCode = "XTZ-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
scenario.h2("AND two updates")
start1 = sp.timestamp(1)
end1 = sp.timestamp(2)
open1 = 3
high1 = 4
low1 = 5
close1 = 6
volume1 = 7
updateData1 = (
start1,
(end1,
(open1,
(high1,
(low1,
(close1, volume1))))))
message1 = sp.pack((assetCode, updateData1))
signature1 = sp.make_signature(
testAccountSecretKey,
message1,
message_format='Raw'
)
start2 = sp.timestamp(8)
end2 = sp.timestamp(9)
open2 = 10
high2 = 11
low2 = 12
close2 = 13
volume2 = 14
updateData2 = (
start2,
(end2,
(open2,
(high2,
(low2,
(close2, volume2))))))
message2 = sp.pack((assetCode, updateData2))
signature2 = sp.make_signature(
testAccountSecretKey,
message2,
message_format='Raw'
)
scenario.h2("WHEN the oracle is updated")
update1 = sp.pair(signature1, updateData1)
update2 = sp.pair(signature2, updateData2)
parameter1 = sp.map(
l={
assetCode: update1
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
parameter2 = sp.map(
l={
assetCode: update2
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter1)
scenario += contract.update(parameter2)
scenario.h2("THEN the oracle contains the data points of the latter update")
assetData = contract.data.oracleData[assetCode]
endPair = sp.snd(assetData)
openPair = sp.snd(endPair)
highPair = sp.snd(openPair)
lowPair = sp.snd(highPair)
closeAndVolumePair = sp.snd(lowPair)
oracleStart = sp.fst(assetData)
oracleEnd = sp.fst(endPair)
oracleOpen = sp.fst(openPair)
oracleHigh = sp.fst(highPair)
oracleLow = sp.fst(lowPair)
oracleClose = sp.fst(closeAndVolumePair)
oracleVolume = sp.snd(closeAndVolumePair)
scenario.verify(oracleStart == start2)
scenario.verify(oracleEnd == end2)
scenario.verify(oracleOpen == open2)
scenario.verify(oracleHigh == high2)
scenario.verify(oracleLow == low2)
scenario.verify(oracleClose == close2)
scenario.verify(oracleVolume == volume2)
@sp.add_test(name="Update Correctly Processes Data From The Same Timestamp")
def test():
scenario = sp.test_scenario()
scenario.h1("Update Correctly Processes Data From The Same Timestamp")
scenario.h2("GIVEN an Oracle contract")
assetCode = "XTZ-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
scenario.h2("AND an update")
start = sp.timestamp(1)
end = sp.timestamp(2)
open1 = 3
high1 = 4
low1 = 5
close1 = 6
volume1 = 7
updateData1 = (
start,
(end,
(open1,
(high1,
(low1,
(close1, volume1))))))
message1 = sp.pack((assetCode, updateData1))
signature1 = sp.make_signature(
testAccountSecretKey,
message1,
message_format='Raw'
)
update1 = sp.pair(signature1, updateData1)
parameter1 = sp.map(
l={
assetCode: update1
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter1)
scenario.h2("WHEN the oracle is updated a second time with the same time")
open2 = 8
high2 = 9
low2 = 10
close2 = 11
volume2 = 12
updateData2 = (
start,
(end,
(open2,
(high2,
(low2,
(close2, volume2))))))
message2 = sp.pack((assetCode, updateData2))
signature2 = sp.make_signature(
testAccountSecretKey,
message2,
message_format='Raw'
)
update2 = sp.pair(signature2, updateData2)
parameter2 = sp.map(
l={
assetCode: update2
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter2)
scenario.h2("THEN the second update has no effect")
assetData = contract.data.oracleData[assetCode]
endPair = sp.snd(assetData)
openPair = sp.snd(endPair)
highPair = sp.snd(openPair)
lowPair = sp.snd(highPair)
closeAndVolumePair = sp.snd(lowPair)
oracleStart = sp.fst(assetData)
oracleEnd = sp.fst(endPair)
oracleOpen = sp.fst(openPair)
oracleHigh = sp.fst(highPair)
oracleLow = sp.fst(lowPair)
oracleClose = sp.fst(closeAndVolumePair)
oracleVolume = sp.snd(closeAndVolumePair)
scenario.verify(oracleStart == start)
scenario.verify(oracleEnd == end)
scenario.verify(oracleOpen == open1)
scenario.verify(oracleHigh == high1)
scenario.verify(oracleLow == low1)
scenario.verify(oracleClose == close1)
scenario.verify(oracleVolume == volume1)
@sp.add_test(name="Correctly Processes Updates With Data From The Past")
def test():
scenario = sp.test_scenario()
scenario.h1("Correctly Processes Updates With Data From The Past")
scenario.h2("GIVEN an Oracle contract with some initial data.")
assetCode = "XTZ-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
start1 = sp.timestamp(3)
end1 = sp.timestamp(4)
open1 = 3
high1 = 4
low1 = 5
close1 = 6
volume1 = 7
updateData1 = (
start1,
(end1,
(open1,
(high1,
(low1,
(close1, volume1))))))
message1 = sp.pack((assetCode, updateData1))
signature1 = sp.make_signature(
testAccountSecretKey,
message1,
message_format='Raw'
)
update1 = sp.pair(signature1, updateData1)
parameter1 = sp.map(
l={
assetCode: update1
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter1)
scenario.h2("WHEN the oracle is updated with a time in the past")
start2 = sp.timestamp(1) # In past
end2 = sp.timestamp(2)
open2 = 8
high2 = 9
low2 = 10
close2 = 11
volume2 = 12
updateData2 = (
start2,
(end2,
(open2,
(high2,
(low2,
(close2, volume2))))))
message2 = sp.pack(updateData2)
signature2 = sp.make_signature(
testAccountSecretKey,
message2,
message_format='Raw'
)
update2 = sp.pair(signature2, updateData2)
parameter2 = sp.map(
l={
assetCode: update2
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter2)
scenario.h2("THEN the update in the past does not modify the data.")
assetData = contract.data.oracleData[assetCode]
endPair = sp.snd(assetData)
openPair = sp.snd(endPair)
highPair = sp.snd(openPair)
lowPair = sp.snd(highPair)
closeAndVolumePair = sp.snd(lowPair)
oracleStart = sp.fst(assetData)
oracleEnd = sp.fst(endPair)
oracleOpen = sp.fst(openPair)
oracleHigh = sp.fst(highPair)
oracleLow = sp.fst(lowPair)
oracleClose = sp.fst(closeAndVolumePair)
oracleVolume = sp.snd(closeAndVolumePair)
scenario.verify(oracleStart == start1)
scenario.verify(oracleEnd == end1)
scenario.verify(oracleOpen == open1)
scenario.verify(oracleHigh == high1)
scenario.verify(oracleLow == low1)
scenario.verify(oracleClose == close1)
scenario.verify(oracleVolume == volume1)
@sp.add_test(name="Untracked Asset does not update oracle")
def test():
scenario = sp.test_scenario()
scenario.h1("Untracked Asset does not update oracle")
scenario.h2("GIVEN an Oracle contract tracking an asset")
assetCode = "XTZ-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
start1 = sp.timestamp(2)
end1 = sp.timestamp(3)
open1 = 3
high1 = 4
low1 = 5
close1 = 6
volume1 = 7
updateData1 = (
start1,
(end1,
(open1,
(high1,
(low1,
(close1, volume1))))))
message1 = sp.pack((assetCode, updateData1))
signature1 = sp.make_signature(
testAccountSecretKey,
message1,
message_format='Raw'
)
update1 = sp.pair(signature1, updateData1)
parameter1 = sp.map(
l={
assetCode: update1
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter1)
scenario.h2("WHEN the oracle is updated with an untracked asset")
untrackedAsset = "BTC-USD"
start2 = sp.timestamp(4)
end2 = sp.timestamp(5)
open2 = 8
high2 = 9
low2 = 10
close2 = 11
volume2 = 12
updateData2 = (
start2,
(end2,
(open2,
(high2,
(low2,
(close2, volume2))))))
message2 = sp.pack((untrackedAsset, updateData2))
signature2 = sp.make_signature(
testAccountSecretKey,
message2,
message_format='Raw'
)
update2 = sp.pair(signature2, updateData2)
parameter2 = sp.map(
l={
untrackedAsset: update2
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter2)
scenario.h2("THEN the oracle only contains the data for the tracked asset.")
assetData = contract.data.oracleData[assetCode]
endPair = sp.snd(assetData)
openPair = sp.snd(endPair)
highPair = sp.snd(openPair)
lowPair = sp.snd(highPair)
closeAndVolumePair = sp.snd(lowPair)
oracleStart = sp.fst(assetData)
oracleEnd = sp.fst(endPair)
oracleOpen = sp.fst(openPair)
oracleHigh = sp.fst(highPair)
oracleLow = sp.fst(lowPair)
oracleClose = sp.fst(closeAndVolumePair)
oracleVolume = sp.snd(closeAndVolumePair)
scenario.verify(oracleStart == start1)
scenario.verify(oracleEnd == end1)
scenario.verify(oracleOpen == open1)
scenario.verify(oracleHigh == high1)
scenario.verify(oracleLow == low1)
scenario.verify(oracleClose == close1)
scenario.verify(oracleVolume == volume1)
scenario.h2("AND does not contain data for the untracked asset")
scenario.verify(~contract.data.oracleData.contains(untrackedAsset))
@sp.add_test(name="Update Fails With Bad Signature")
def test():
scenario = sp.test_scenario()
scenario.h1("Update Fails With Bad Signature")
scenario.h2("GIVEN an Oracle contract")
assetCode = "XTZ-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
scenario.h2("AND an update signed by an alternative key")
alternativeAccount = sp.test_account("AlternativeAccount")
alternativeSecretKey = alternativeAccount.secret_key
start = sp.timestamp(1)
end = sp.timestamp(2)
open = 3
high = 4
low = 5
close = 6
volume = 7
updateData = (
start,
(end,
(open,
(high,
(low,
(close, volume))))))
message = sp.pack(updateData)
signature = sp.make_signature(
alternativeSecretKey,
message,
message_format='Raw'
)
scenario.h2("WHEN the oracle is updated")
update = sp.pair(signature, updateData)
parameter = sp.map(
l={
assetCode: update
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario.h2("THEN the update fails")
scenario += contract.update(parameter).run(valid=False)
@sp.add_test(name="Revokes An Oracle")
def test():
scenario = sp.test_scenario()
scenario.h1("Revokes An Oracle")
scenario.h2(
"GIVEN an oracle contract and a correctly signed revoke message.")
message = sp.pack(sp.none)
signature = sp.make_signature(
testAccountSecretKey,
message,
message_format='Raw'
)
assetCode = "XTZ-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
scenario.h2("WHEN revoke is called.")
scenario += contract.revoke(signature)
scenario.h2("THEN the oracle is revoked")
scenario.verify(~contract.data.publicKey.is_some())
scenario.h2("AND the oracle's data no longer contains the original asset")
scenario.verify(~contract.data.oracleData.contains(assetCode))
scenario.h2("AND future updates fail.")
start = sp.timestamp(1)
end = sp.timestamp(2)
open = 3
high = 4
low = 5
close = 6
volume = 7
updateData = (
start,
(end,
(open,
(high,
(low,
(close, volume))))))
message = sp.pack((assetCode, updateData))
signature = sp.make_signature(
testAccountSecretKey,
message,
message_format='Raw'
)
update = sp.pair(signature, updateData)
parameter = sp.map(
l={
assetCode: update
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter).run(valid=False)
@sp.add_test(name="Incorrect Revoke Fails to Revoke An Oracle")
def test():
scenario = sp.test_scenario()
scenario.h1("Incorrect Revoke Fails to Revoke An Oracle")
scenario.h2(
"GIVEN an oracle contract and a revoke message signed by another account.")
testAccount = sp.test_account("Incorrect_Account")
message = sp.pack(sp.none)
signature = sp.make_signature(
testAccount.secret_key,
message,
message_format='Raw'
)
assetCode = "XTZ-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
scenario.h2("WHEN revoke is called")
scenario.h2("THEN the call fails")
scenario += contract.revoke(signature).run(valid=False)
scenario.h2("AND future updates succeed")
start = sp.timestamp(1)
end = sp.timestamp(2)
open = 3
high = 4
low = 5
close = 6
volume = 7
updateData = (
start,
(end,
(open,
(high,
(low,
(close, volume))))))
message = sp.pack((assetCode, updateData))
signature = sp.make_signature(
testAccountSecretKey,
message,
message_format='Raw'
)
update = sp.pair(signature, updateData)
parameter = sp.map(
l={
assetCode: update
},
tkey=sp.TString,
tvalue=SignedOracleDataType
)
scenario += contract.update(parameter)
@sp.add_test(name="Update with stale asset does not fail")
def test():
scenario = sp.test_scenario()
scenario.h1("Update with stale asset does not fail")
scenario.h2("GIVEN an Oracle contract tracking two assets with an initial update")
assetCode1 = "XTZ-USD"
assetCode2 = "BTC-USD"
contract = OracleContract(
publicKey=testAccountPublicKey,
initialData=sp.big_map(
l={
assetCode1: initialOracleData,
assetCode2: initialOracleData
},
tkey=sp.TString,
tvalue=Harbinger.OracleDataType
)
)
scenario += contract
start1 = sp.timestamp(1)
end1 = sp.timestamp(2)
open1 = 3
high1 = 4
low1 = 5
close1 = 6
volume1 = 7
updateData1 = (
start1,
(end1,
(open1,
(high1,
(low1,
(close1, volume1))))))
asset1Message1 = sp.pack((assetCode1, updateData1))
asset1Signature1 = sp.make_signature(
testAccountSecretKey,
asset1Message1,
message_format='Raw'
)