assert-balance

Assert the native balance of an account, on-chain.

Syntax

assert-balance <account> <operator> <expected> [message]

Arguments

Name	Type	Description
account	address	Account to check
operator	string	Comparison operator: ==, >, <, >=, <=, ~=
expected	number	Expected balance in wei
[message]	string	Revert message when the assertion fails

Options

Name	Type	Description
--delta	number	Allowed delta for the ~= (approximate) operator

Examples

load assertions

# Require an account to hold more than 1 ETH
assertions:assert-balance @me > 1e18 "needs ETH"

# Approximate balance within a delta
assertions:assert-balance @me ~= 5e18 --delta 1e17 "balance drifted"

See Also