let strings = import "std/strings.ucg";
let t = import "std/testing.ucg";

let str_class = strings.ops{str="foo bar"};

assert t.equal{
    left = str_class.split_on{},
    right = ["foo", "bar"],
};

assert t.equal{
    left = strings.ops{str="foo"}.split_on{},
    right = ["foo"],
};

assert t.equal{
    left = strings.ops{str=""}.split_on{},
    right = [""],
};

assert t.equal{
    left = strings.ops{str="foo=>bar=>quux"}.split_on{on="=>"},
    right = ["foo", "bar", "quux"],
};

assert t.equal{
    left = str_class.split_at(3),
    right = {left="foo", right=" bar"},
};

assert t.equal{
    left = str_class.len,
    right = 7,
};

assert t.equal{
    left = str_class.chars,
    right = ["f", "o", "o", " ", "b", "a", "r"],
};

assert t.equal{
    left = str_class.substr{start=1}.str,
    right = "oo bar",
};

assert t.equal{
    left = str_class.substr{end=5}.str,
    right = "foo ba",
};

assert t.equal{
    left = str_class.substr{end=8}.str,
    right = "foo bar",
};

assert t.equal{
    left = strings.ops{str="123"}.parse_int{}.unwrap(),
    right = 123,
};

let str_int = strings.ops{str="123"};
assert t.equal{
    left = strings.ops{str="123 "}.parse_int{}.unwrap(),
    right = 123,
};