public void Test(TestJson testJson)
{
TestSimulator sim = new(testJson);
ITailGasPriceCalculator tailGas = testJson.TailGasType switch
{
TailGasType.Any => new ConstantTailGasPriceCalculator(0.GWei()),
TailGasType.Constant80 => new ConstantTailGasPriceCalculator(80.GWei()),
_ => throw new ArgumentOutOfRangeException()
};
IBundleSource selector = testJson.SelectorType switch
{
SelectorType.V1 => new V1Selector(sim, sim),
SelectorType.V2 => new V2Selector(sim, sim, tailGas, testJson.MaxGasLimitRatio),
_ => throw new ArgumentOutOfRangeException()
};
IEnumerable <MevBundle> selected = selector.GetBundles(_blockHeader, testJson.GasLimit !.Value);
SimulatedMevBundle[]? simulated = sim.Simulate(_blockHeader, testJson.GasLimit !.Value, selected).ToArray();
long totalGasUsedByBundles = simulated.Sum(s => s.GasUsed);
long gasLeftForTransactions = testJson.GasLimit !.Value - totalGasUsedByBundles;
IEnumerable <Transaction>?txs = sim.GetTransactions(_blockHeader, gasLeftForTransactions);
UInt256 totalProfit = simulated.Aggregate <SimulatedMevBundle, UInt256>(0, (profit, x) => profit + x.Profit);
totalProfit += txs.Aggregate <Transaction, UInt256>(0, (profit, x) => profit + (x.GasPrice * (UInt256)x.GasLimit));
totalProfit.Should().Be(testJson.OptimalProfit !.Value, testJson.Description);
}
private static IEnumerable <TestJson> AllSelectors(TestJson testJson)
{
foreach (SelectorType value in Enum.GetValues <SelectorType>())
{
TestJson withSelector = (TestJson)testJson.Clone();
withSelector.SelectorType = value;
yield return(withSelector);
}
}
private static IEnumerable <TestJson> AllGasLimits(TestJson testJson)
{
long[] ratios = { 33, 100 };
foreach (long ratio in ratios)
{
TestJson withRatio = (TestJson)testJson.Clone();
withRatio.MaxGasLimitRatio = ratio;
yield return(withRatio);
}
}
/// <summary>
/// Would be nicer with schema but let us keep it simple here.
/// </summary>
/// <param name="testJson">Test object to validate</param>
/// <returns>(<value>True</value>, <value>null</value>) if valid,
/// otherwise (<value>False</value>, <value>"error description"</value>).</returns>
private static void ValidateTest(TestJson testJson)
{
if (testJson.GasLimit is null)
{
Assert.Fail("Gas limit not specified");
}
if (testJson.Name is null)
{
Assert.Fail("Name missing");
}
if (testJson.Description is null)
{
Assert.Fail("Description missing");
}
if (testJson.Bundles is null)
{
Assert.Fail("Bundles missing");
}
if (testJson.Txs is null)
{
Assert.Fail("Transactions missing");
}
if (testJson.OptimalProfit is null)
{
Assert.Fail("Optimal profit not specified");
}
if (testJson.Bundles !.Any(item => item is null))
{
Assert.Fail("One of the bundles is null");
}
if (testJson.Txs !.Any(item => item is null))
{
Assert.Fail("One of the transactions is null");
}
}
public TestSimulator(TestJson testJson)
{
ValidateTest(testJson);
_testJson = testJson;
}