50 lines
1.1 KiB
Rust
50 lines
1.1 KiB
Rust
use std;
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import vec;
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fn test_heap_to_heap() {
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// a spills onto the heap
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let mut a = ~[0, 1, 2, 3, 4];
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a += a;
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assert (vec::len(a) == 10u);
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assert (a[0] == 0);
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assert (a[1] == 1);
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assert (a[2] == 2);
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assert (a[3] == 3);
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assert (a[4] == 4);
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assert (a[5] == 0);
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assert (a[6] == 1);
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assert (a[7] == 2);
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assert (a[8] == 3);
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assert (a[9] == 4);
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}
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fn test_stack_to_heap() {
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// a is entirely on the stack
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let mut a = ~[0, 1, 2];
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// a spills to the heap
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a += a;
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assert (vec::len(a) == 6u);
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assert (a[0] == 0);
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assert (a[1] == 1);
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assert (a[2] == 2);
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assert (a[3] == 0);
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assert (a[4] == 1);
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assert (a[5] == 2);
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}
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fn test_loop() {
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// Make sure we properly handle repeated self-appends.
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let mut a: ~[int] = ~[0];
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let mut i = 20;
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let mut expected_len = 1u;
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while i > 0 {
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log(error, vec::len(a));
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assert (vec::len(a) == expected_len);
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a += a;
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i -= 1;
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expected_len *= 2u;
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}
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}
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fn main() { test_heap_to_heap(); test_stack_to_heap(); test_loop(); }
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