MustHexToECDSA returns the result of HexToECDSA on hexkey, or panics if error.

Newethhelpers.Client creates a new client with *testing.Mock.

NewClientWithMockAndClient creates a new client with *testing.Mock and an underlying client.

NewSimulatedBackendWithAccounts creates a new simulated backend with provided simulated accounts.

PendingLogHandler returns a new log.Handler that buffers records until the returned commit function is called.