Struct mimicry::RealCallSwitch

pub struct RealCallSwitch(_);

Switch between real and mocked implementations.

A field of this type should be present on a struct for #[derive(CallReal)] to work.

Examples

#[derive(Mock, CallReal)]
struct MockState {
    // other fields...
    _switch: RealCallSwitch,
}

// You can now use `CallReal` methods in mock logic:
impl MockState {
    fn mock_something(&self, arg: &str) {
        self.call_real(|| { /* ... */ });
    }
}

The derive logic is nothing magical; it can be easily replicated manually if necessary:

struct MockState {
    // other fields...
    switch: RealCallSwitch,
}

impl CallReal for MockState {
    fn real_switch(&self) -> &RealCallSwitch {
        &self.switch
    }
}

Trait Implementations

impl Debug for RealCallSwitch

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RealCallSwitch

fn default() -> RealCallSwitch

Returns the “default value” for a type.