Make concretize work with FnMut arguments

asomers / mockall

A powerful mock object library for Rust

Apache License 2.0

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Closed asomers closed 1 month ago

asomers commented 1 month ago

FnMut arguments need two changes:

Callbacks to methods like .returning() need a mutable reference to the FnMut argument.
The mock method needs a mutable binding for the FnMut argument

Fixes #577