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Clarify explanation of mocking free functions

PiperOrigin-RevId: 364943561
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Abseil Team 2021-03-24 19:20:37 -07:00 committed by Dino Radaković
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docs/gmock_cook_book.md
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@ -251,9 +251,9 @@ tests.
### Mocking Free Functions
It's possible to use gMock to mock a free function (i.e. a C-style function or a
static method). You just need to rewrite your code to use an interface (abstract
class).
It is not possible to directly mock a free function (i.e. a C-style function or
a static method). If you need to, you can rewrite your code to use an interface
(abstract class).
Instead of calling a free function (say, `OpenFile`) directly, introduce an
interface for it and have a concrete subclass that calls the free function: