v/compiler/tests/mut_test.v

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struct A {
pub mut:
v []int
}
struct B {
pub mut:
a []A
}
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fn foo(b int, a mut []int) {
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a[0] = 7
//a << 4
}
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fn test_mut() {
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mut numbers := [1,2,3]
foo(7, mut numbers)
assert numbers.len == 3
// TODO bring back once << works with mutable args
//assert numbers.len == 4
//assert numbers[0] == 7
//assert numbers[3] == 4
println(numbers)
n := 1
mut b := &n
*b = 10
//mut b := mut a
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//b = 10
}
fn test_mut_2() {
zero := 0
mut b := B{}
b.a << A{}
b.a[0].v = [9, 8, 7]
b.a[0].v << 6
b.a[zero].v << 5
b.a[0].v[zero] = 3
b.a[0].v[b.a[zero].v[zero]] += 1b.a[0].v[b.a[0].v[zero]] += 1
assert b.a[0].v.len == 5
assert b.a[0].v[0] == 3
assert b.a[0].v[1] == 8
assert b.a[0].v[2] == 7
assert b.a[0].v[3] == 8
assert b.a[0].v[4] == 5
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}