1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
//! When configurator for a binding for types inside of a [`IDIContainer`].
//!
//! [`IDIContainer`]: crate::di_container::blocking::IDIContainer
use std::any::type_name;
use std::marker::PhantomData;
use std::rc::Rc;
use crate::di_container::blocking::IDIContainer;
use crate::errors::di_container::BindingWhenConfiguratorError;
/// When configurator for a binding for type 'Interface' inside a [`IDIContainer`].
///
/// [`IDIContainer`]: crate::di_container::blocking::IDIContainer
pub struct BindingWhenConfigurator<Interface, DIContainerType>
where
Interface: 'static + ?Sized,
DIContainerType: IDIContainer,
{
di_container: Rc<DIContainerType>,
interface_phantom: PhantomData<Interface>,
}
impl<Interface, DIContainerType> BindingWhenConfigurator<Interface, DIContainerType>
where
Interface: 'static + ?Sized,
DIContainerType: IDIContainer,
{
pub(crate) fn new(di_container: Rc<DIContainerType>) -> Self
{
Self {
di_container,
interface_phantom: PhantomData,
}
}
/// Configures the binding to have a name.
///
/// # Errors
/// Will return Err if no binding for the interface already exists.
pub fn when_named(
&self,
name: &'static str,
) -> Result<(), BindingWhenConfiguratorError>
{
let binding = self
.di_container
.remove_binding::<Interface>(None)
.map_or_else(
|| {
Err(BindingWhenConfiguratorError::BindingNotFound(type_name::<
Interface,
>(
)))
},
Ok,
)?;
self.di_container
.set_binding::<Interface>(Some(name), binding);
Ok(())
}
}
#[cfg(test)]
mod tests
{
use mockall::predicate::eq;
use super::*;
use crate::provider::blocking::MockIProvider;
use crate::test_utils::{mocks, subjects};
#[test]
fn when_named_works()
{
let mut di_container_mock = mocks::blocking_di_container::MockDIContainer::new();
di_container_mock
.expect_remove_binding::<dyn subjects::INumber>()
.with(eq(None))
.return_once(|_name| Some(Box::new(MockIProvider::new())))
.once();
di_container_mock
.expect_set_binding::<dyn subjects::INumber>()
.withf(|name, _provider| name == &Some("cool"))
.return_once(|_name, _provider| ())
.once();
let binding_when_configurator = BindingWhenConfigurator::<
dyn subjects::INumber,
mocks::blocking_di_container::MockDIContainer,
>::new(Rc::new(di_container_mock));
assert!(matches!(
binding_when_configurator.when_named("cool"),
Ok(_)
));
}
}
|
