let t = import "std/testing.ucg".asserts{};

assert t.equal{
    left = "hello @" % ("world"),
    right = "hello world",
};

assert t.equal{
    left = "1 @ @" % (2, 3),
    right = "1 2 3",
};

assert t.equal{
    left = "@ or @" % (true, false),
    right = "true or false",
};

assert t.equal{
    left = "@" % (NULL),
    right = "NULL",
};

assert t.equal{
    left = "bar is just great" % {foo="bar"},
    right = "bar is just great",
};

assert t.equal{
    left = "@{item.foo} is just great" % {foo="bar"},
    right = "bar is just great",
};

assert t.equal{
    left = "@{{foo=item.foo}.foo} is just great" % {foo="bar"},
    right = "bar is just great",
};

assert t.equal{
    left = "@{1 + 1} is just great" % {},
    right = "2 is just great",
};

assert t.equal{
    left = "@{item.0 + item.1 + item.2} is just great" % [0, 1, 2],
    right = "3 is just great",
};

assert t.equal{
    left = "@{item.op()} is just great" % {op=func() => "BOB!"},
    right = "BOB! is just great",
};