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Extra tests for move and autoderef #15

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Extra tests for move and autoderef #15

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7221948
test case for autoderef
ijackson Mar 23, 2021
1b72eac
test case for no Copy then/else
ijackson Mar 23, 2021
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32 changes: 32 additions & 0 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -311,4 +311,36 @@ mod tests {
};
assert_eq!(x, 3);
}

#[test]
fn magic_deref() {
fn f(y: &'static str) -> (&'static str, bool) {
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This can be simplified:

#[test]
fn magic_deref() {
    struct Wrapped<T>(T);
    let s = "hello";
    if_chain! {
        then { Wrapped(s) }
        else { Wrapped(&s) }
    };
}

let b: [&str; 1] = ["a"];
if_chain! {
if false;
if let Some(x) = b.get(1);
then { (x, true) }
else { (y, false) }
}
}
f("foo");
}

#[test]
fn no_move() {
struct NoCopy;
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This as well:

#[test]
fn no_move() {
    struct NoCopy;
    let x = NoCopy;
    if_chain! {
        then { drop(x); }
        else { drop(x); }
    }
}

let new_record = NoCopy;
let mut store = None;
let returned = if_chain!{
if true;
then {
store = Some(new_record);
None
} else {
Some(new_record)
}
};
drop(returned);
drop(store);
}
}