File: format_description.rs

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rust-time 0.3.47-1
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use time::format_description::{modifier, BorrowedFormatItem, Component, OwnedFormatItem};

#[test]
fn borrowed_format_item_component_conversions() {
    let component = Component::Year(modifier::Year::default());
    let item = BorrowedFormatItem::from(component);
    assert!(matches!(item, BorrowedFormatItem::Component(inner) if inner == component));
    assert_eq!(Component::try_from(item), Ok(component));
    assert!(Component::try_from(BorrowedFormatItem::Literal(b"")).is_err());
    assert!(<&[BorrowedFormatItem<'_>]>::try_from(BorrowedFormatItem::Literal(b"")).is_err());
}

#[test]
fn borrowed_format_item_compound_conversions() {
    let compound = [BorrowedFormatItem::Literal(b"")].as_slice();
    let item = BorrowedFormatItem::from(compound);
    assert!(matches!(item, BorrowedFormatItem::Compound(inner) if inner == compound));
    assert_eq!(<&[BorrowedFormatItem<'_>]>::try_from(item), Ok(compound));
}

#[test]
fn borrowed_format_item_equality() {
    let component = Component::Year(modifier::Year::default());
    let compound = [BorrowedFormatItem::Literal(b"")].as_slice();
    let component_item = BorrowedFormatItem::from(component);
    let compound_item = BorrowedFormatItem::from(compound);

    assert_eq!(component, component_item);
    assert_eq!(component_item, component);
    assert_eq!(compound, compound_item);
    assert_eq!(compound_item, compound);
}

#[test]
fn owned_format_item_component_conversions() {
    let component = Component::Year(modifier::Year::default());
    let item = OwnedFormatItem::from(component);
    assert!(matches!(item, OwnedFormatItem::Component(inner) if inner == component));
    assert_eq!(Component::try_from(item), Ok(component));
    assert!(Component::try_from(OwnedFormatItem::Literal(Box::new([]))).is_err());
    assert!(Vec::<OwnedFormatItem>::try_from(OwnedFormatItem::Literal(Box::new([]))).is_err());
}

#[test]
fn owned_format_item_compound_conversions() {
    let compound = vec![OwnedFormatItem::Literal(Box::new([]))];
    let item = OwnedFormatItem::from(compound.clone());
    assert!(matches!(item.clone(), OwnedFormatItem::Compound(inner) if inner.to_vec() == compound));
    assert_eq!(Vec::<OwnedFormatItem>::try_from(item), Ok(compound));
}

#[test]
fn owned_format_item_equality() {
    let component = Component::Year(modifier::Year::default());
    let compound = OwnedFormatItem::from([BorrowedFormatItem::Literal(b"")].as_slice());
    let component_item = OwnedFormatItem::from(component);

    assert_eq!(component, component_item);
    assert_eq!(component_item, component);
    assert_eq!(
        compound,
        [OwnedFormatItem::Literal(Box::new([]))].as_slice()
    );
    assert_eq!(
        [OwnedFormatItem::Literal(Box::new([]))].as_slice(),
        compound
    );
}