// Test which things are iterable.
// Ref: false

---
// Array.

#for x #in () {}

#let sum = 0
#for x #in (1, 2, 3, 4, 5) {
    sum += x
}
#[test sum, 15]

---
// Dictionary.
// Ref: true
(\ #for k, v #in (name: "Typst", age: 2) [
    #[h 0.5cm] {k}: {v}, \
])

---
// String.
{
    #let out = ""
    #let first = true
    #for c #in "abc" {
        #if not first {
            out += ", "
        }
        first = false
        out += c
    }
    test(out, "a, b, c")
}

---
// Uniterable expression.
// Error: 12-16 cannot loop over boolean
#for v #in true {}

// Make sure that we don't complain twice.
// Error: 12-19 cannot add integer and string
#for v #in 1 + "2" {}