inject_function

Signature

inject_function(fn_source_code, force=False)

Description

Injects a function into the contract without affecting the contract's source code. Useful for testing private functionality.

• fn_source_code: The source code of the function to inject.
• force: Whether to force the injection if a function with the same name already exists.
• Returns: None.

Examples

>>> import boa
>>> src = """
... @external
... def main():
...     pass
... """
>>> deployer = boa.loads_partial(src, name="Foo")
>>> contract = deployer.deploy()
>>> contract.inject_function("""
... @internal
... def injected_function() -> uint256:
...     return 42
... """)
>>> contract.internal.injected_function()
42