public async Task ValidateRemovingNewReportingAgent()
{
var txParams = new TransactionParams {
From = Accounts[0]
}; // admin
var txHash = await _contract.registerPriceAgent(Accounts[2]).SendTransaction(txParams);
var txHash2 = await _contract.removePriceAgent(Accounts[2]).SendTransaction(txParams);
//validate num of price agents
var numberOfRegisteredPriceAgents = await _contract.numberOfRegisteredPriceAgents().Call();
Assert.AreEqual(1, numberOfRegisteredPriceAgents);
//validate total price (should not have changed from init)
var totalBtcPriceUSDCents = await _contract.getPrice().Call();
Assert.AreEqual(initPrice, totalBtcPriceUSDCents);
//validate that address of added agent should not be present
var newPriceAgentAddress = await _contract.getRegisteredPriceAgent(1).Call();
Assert.AreEqual("0x0000000000000000000000000000000000000000", newPriceAgentAddress);
}