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cxx-qt-lib: mirror PartialEq impls added in the previous commit #1484

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cxx-qt-lib: mirror PartialEq impls added in the previous commit #1484

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100 changes: 100 additions & 0 deletions crates/cxx-qt-lib/src/core/qlist/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,44 @@ where
}
}

// The `PartialEq` implementations below mirror the ones above with the operands swapped,
// allowing supported types to appear on either side.
impl<T, U> PartialEq<QList<U>> for [T]
where
U: QListElement + PartialEq<T>,
{
fn eq(&self, other: &QList<U>) -> bool {
other == self
}
}

impl<T, U> PartialEq<QList<U>> for &[T]
where
U: QListElement + PartialEq<T>,
{
fn eq(&self, other: &QList<U>) -> bool {
other == self
}
}

impl<T, U, const N: usize> PartialEq<QList<U>> for [T; N]
where
U: QListElement + PartialEq<T>,
{
fn eq(&self, other: &QList<U>) -> bool {
other == self
}
}

impl<T, U, const N: usize> PartialEq<QList<U>> for &[T; N]
where
U: QListElement + PartialEq<T>,
{
fn eq(&self, other: &QList<U>) -> bool {
other == self
}
}

impl<T> Eq for QList<T> where T: QListElement + Eq {}

impl<T> fmt::Debug for QList<T>
Expand Down Expand Up @@ -525,6 +563,7 @@ mod test {
fn qlist_eq() {
let qlist = QList::<u8>::from([0, 1, 2]);

// QList is on the LHS
assert_eq!(qlist, [0, 1, 2]);
assert_eq!(qlist, &[0, 1, 2]);

Expand All @@ -534,33 +573,59 @@ mod test {
let vec = vec![0, 1, 2];
assert_eq!(qlist, vec[..]);
assert_eq!(qlist, vec.as_slice());

// QList is on the RHS
assert_eq!([0, 1, 2], qlist);
assert_eq!(&[0, 1, 2], qlist);

assert_eq!([0, 1, 2][..], qlist);
assert_eq!(&[0, 1, 2][..], qlist);

assert_eq!(vec[..], qlist);
assert_eq!(vec.as_slice(), qlist);
}

#[test]
fn qlist_eq_empty() {
let qlist = QList::<u8>::default();

// QList is on the LHS
assert_eq!(qlist, EMPTY);
assert_eq!(qlist, &EMPTY);
assert_eq!(qlist, EMPTY[..]);
assert_eq!(qlist, &EMPTY[..]);

// QList is on the RHS
assert_eq!(EMPTY, qlist);
assert_eq!(&EMPTY, qlist);
assert_eq!(EMPTY[..], qlist);
assert_eq!(&EMPTY[..], qlist);
}

#[test]
fn qlist_ne_empty() {
let qlist = QList::<u8>::default();

// QList is on the LHS
assert_ne!(qlist, [1]);
assert_ne!(qlist, &[1]);

assert_ne!(qlist, [2][..]);
assert_ne!(qlist, &[2][..]);

// QList is on the RHS
assert_ne!([1], qlist);
assert_ne!(&[1], qlist);

assert_ne!([2][..], qlist);
assert_ne!(&[2][..], qlist);
}

#[test]
fn qlist_ne_different_contents() {
let qlist = QList::<u8>::from([0, 1, 2]);

// QList is on the LHS
assert_ne!(qlist, [0, 1, 3]);
assert_ne!(qlist, &[0, 1, 3]);

Expand All @@ -570,12 +635,23 @@ mod test {
let vec = vec![1, 2, 0];
assert_ne!(qlist, vec[..]);
assert_ne!(qlist, vec.as_slice());

// QList is on the RHS
assert_ne!([0, 1, 3], qlist);
assert_ne!(&[0, 1, 3], qlist);

assert_ne!([2, 1, 0][..], qlist);
assert_ne!(&[2, 1, 0][..], qlist);

assert_ne!(vec[..], qlist);
assert_ne!(vec.as_slice(), qlist);
}

#[test]
fn qlist_ne_different_lengths() {
let qlist = QList::<u8>::from([0, 1, 2]);

// QList is on the LHS
assert_ne!(qlist, [0, 1]);
assert_ne!(qlist, &[0, 1, 2, 3]);

Expand All @@ -586,12 +662,25 @@ mod test {
assert_ne!(qlist, &EMPTY[..]);
assert_ne!(qlist, EMPTY);
assert_ne!(qlist, &EMPTY);

// QList is on the RHS
assert_ne!([0, 1], qlist);
assert_ne!(&[0, 1, 2, 3], qlist);

assert_ne!([0, 1][..], qlist);
assert_ne!(&[0, 1, 2, 3][..], qlist);

assert_ne!(EMPTY[..], qlist);
assert_ne!(&EMPTY[..], qlist);
assert_ne!(EMPTY, qlist);
assert_ne!(&EMPTY, qlist);
}

#[test]
fn qlist_eq_qstrings() {
let qlist = QList::<QString>::from([QString::from("a"), QString::from("b")]);

// QList is on the LHS
assert_eq!(qlist, [QString::from("a"), QString::from("b")]);
assert_eq!(qlist, &[QString::from("a"), QString::from("b")]);
assert_eq!(qlist, [QString::from("a"), QString::from("b")][..]);
Expand All @@ -601,5 +690,16 @@ mod test {
assert_ne!(qlist, &[QString::from("a"), QString::from("c")]);
assert_ne!(qlist, [QString::from("a"), QString::from("c")][..]);
assert_ne!(qlist, &[QString::from("a"), QString::from("c")][..]);

// QList is on the RHS
assert_eq!([QString::from("a"), QString::from("b")], qlist);
assert_eq!(&[QString::from("a"), QString::from("b")], qlist);
assert_eq!([QString::from("a"), QString::from("b")][..], qlist);
assert_eq!(&[QString::from("a"), QString::from("b")][..], qlist);

assert_ne!([QString::from("a"), QString::from("c")], qlist);
assert_ne!(&[QString::from("a"), QString::from("c")], qlist);
assert_ne!([QString::from("a"), QString::from("c")][..], qlist);
assert_ne!(&[QString::from("a"), QString::from("c")][..], qlist);
}
}
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