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use askama::Template;
#[derive(Template)]
#[template(source = "{{ func(value) }}", ext = "txt")]
struct OneFunction {
func: fn(&i32) -> i32,
value: i32,
}
#[test]
fn test_one_func() {
let t = OneFunction {
func: |&i| 2 * i,
value: 123,
};
assert_eq!(t.render().unwrap(), "246");
}
#[derive(Template)]
#[template(source = "{{ self.func(value) }}", ext = "txt")]
struct OneFunctionSelf {
value: i32,
}
impl OneFunctionSelf {
fn func(&self, i: &i32) -> i32 {
2 * i
}
}
#[test]
fn test_one_func_self() {
let t = OneFunctionSelf { value: 123 };
assert_eq!(t.render().unwrap(), "246");
}
#[derive(Template)]
#[template(source = "{{ func[index](value) }}", ext = "txt")]
struct OneFunctionIndex<'a> {
func: &'a [fn(&i32) -> i32],
value: i32,
index: usize,
}
#[test]
fn test_one_func_index() {
let t = OneFunctionIndex {
func: &[|_| panic!(), |&i| 2 * i, |_| panic!(), |_| panic!()],
value: 123,
index: 1,
};
assert_eq!(t.render().unwrap(), "246");
}
struct AddToGetAFunction;
impl std::ops::Add<usize> for &AddToGetAFunction {
type Output = fn(&i32) -> i32;
fn add(self, rhs: usize) -> Self::Output {
assert_eq!(rhs, 1);
|&i| 2 * i
}
}
#[derive(Template)]
#[template(source = "{{ (func + index)(value) }}", ext = "txt")]
struct OneFunctionBinop<'a> {
func: &'a AddToGetAFunction,
value: i32,
index: usize,
}
#[test]
fn test_one_func_binop() {
let t = OneFunctionBinop {
func: &AddToGetAFunction,
value: 123,
index: 1,
};
assert_eq!(t.render().unwrap(), "246");
}
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