namespace 0.1.0

A namespace abstraction.
Documentation 
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extern crate namespace;

use namespace::{
    Namespace,
    NSErr,
};

#[test]
fn basic_1() {
    let ns = Namespace::new("a::b::c").unwrap();
    assert_eq!(ns.to_string(), "a::b::c");
}

#[test]
fn basic_2() {
    let ns = Namespace::new("a::b").unwrap();
    let mut ns_iter = ns.iter();
    assert_eq!(ns_iter.next().unwrap(), "a");
}

#[test]
fn remainder() {
    let ns = Namespace::new("a::b::c").unwrap();
    let other = Namespace::new("c::d::e").unwrap();
    assert_eq!(
        ns.remainder(&other).unwrap().to_string(),
        "d::e"
    )
}

#[test]
fn empty_1() {
    match Namespace::new("") {
        Err(NSErr::Parse(s, 0)) => assert_eq!(&s, ""),
        _                       => assert!(false),
    };
}

#[test]
fn empty_2() {
    match Namespace::new("::") {
        Err(NSErr::Parse(s, 0)) => assert_eq!(&s, "::"),
        _                       => assert!(false),
    };
}

#[test]
fn empty_3() {
    match Namespace::new("a::::c") {
        Err(NSErr::Parse(s, 3)) => assert_eq!(&s, "a::::c"),
        _                       => assert!(false),
    };
}

#[test]
fn append() {
    let ns1 = Namespace::new("a::b").unwrap();
    let ns2 = Namespace::new("c::d").unwrap();
    let out = ns1.append(&ns2);
    let mut iter = out.iter();
    assert!(&out.to_string() == "a::b::c::d" );
    assert!(iter.next()      == Some("a")    );
    assert!(iter.next()      == Some("b")    );
    assert!(iter.next()      == Some("c")    );
    assert!(iter.next()      == Some("d")    );
    assert!(iter.next()      == None         );
}

#[test]
fn append_at_1() {
    let ns1 = Namespace::new("a::b::c").unwrap();
    let ns2 = Namespace::new("d").unwrap();
    assert_eq!(
        ns1.append_at(&ns2, 1)
            .unwrap()
            .to_string(),
        "a::d"
    );
}
#[test]
fn append_at_3() {
    let ns1 = Namespace::new("hobbit::name").unwrap();
    let ns2 = Namespace::new("age").unwrap();
    assert_eq!(
        ns1.append_at(&ns2, 1)
            .unwrap()
            .to_string(),
        "hobbit::age"
    );
}

#[test]
fn append_at_2() {
    let ns1 = Namespace::new("a").unwrap();
    let ns2 = Namespace::new("b::c").unwrap();
    assert_eq!(
        ns1.append_at(&ns2, 1)
            .unwrap()
            .to_string(),
        "a::b::c"
    );
}

#[test]
fn test_sliding_match() {
    let ns = Namespace::new("a::b::c").unwrap();
    let other = Namespace::new("c::d::e").unwrap();
    assert_eq!(
        ns.sliding_match(&other),
        vec!(2),
    );
}

#[test]
fn test_sliding_join() {
    let ns = Namespace::new("a::b").unwrap();
    let other = Namespace::new("b::c").unwrap();
    assert_eq!(
        ns.sliding_join(&other).unwrap().to_string(),
        "a::b::c",
    );
}

#[test]
fn test_offset_match() {
    let ns1 = Namespace::new("a::b::c").unwrap();
    let other = Namespace::new("b::c::d").unwrap();
    assert!(ns1.offset_match(&other, 1));
    assert!(!ns1.offset_match(&other, 0));
}

#[test]
fn remove_0() {
    assert_eq!(
        Namespace::new("a::b::c").unwrap()
            .remove(0)
            .unwrap()
            .to_string(),
        "a::b::c"
    );
}

#[test]
fn remove_1() {
    assert_eq!(
        Namespace::new("a::b::c").unwrap()
            .remove(1)
            .unwrap()
            .to_string(),
        "a::b"
    );
}

#[test]
fn remove_2() {
    assert_eq!(
        Namespace::new("a::b::c").unwrap()
            .remove(2)
            .unwrap()
            .to_string(),
        "a"
    );
}

#[test]
fn test_truncate_1() {
    assert_eq!(
        Namespace::new("a::b::c").unwrap()
            .truncate(2)
            .unwrap()
            .to_string(),
        "a::b"
    );
}

#[test]
fn test_truncate_2() {
    assert_eq!(
        Namespace::new("a::b").unwrap()
            .truncate(2)
            .unwrap()
            .to_string(),
        "a::b"
    );
}