rust/src/test/run-pass/task-comm-16.rs

// -*- rust -*-

// Tests of ports and channels on various types
fn test_rec() {
    type r = rec(int val0, u8 val1, char val2);

    let port[r] po = port();
    let chan[r] ch = chan(po);
    let r r0 = rec(val0=0, val1=1u8, val2='2');
    ch <| r0;
    let r r1;
    po |> r1;
    assert (r1.val0 == 0);
    assert (r1.val1 == 1u8);
    assert (r1.val2 == '2');
}

fn test_vec() {
    let port[int[]] po = port();
    let chan[int[]] ch = chan(po);
    let int[] v0 = ~[0, 1, 2];
    ch <| v0;
    let int[] v1;
    po |> v1;
    assert (v1.(0) == 0);
    assert (v1.(1) == 1);
    assert (v1.(2) == 2);
}

fn test_str() {
    let port[str] po = port();
    let chan[str] ch = chan(po);
    let str s0 = "test";
    ch <| s0;
    let str s1;
    po |> s1;
    assert (s1.(0) as u8 == 't' as u8);
    assert (s1.(1) as u8 == 'e' as u8);
    assert (s1.(2) as u8 == 's' as u8);
    assert (s1.(3) as u8 == 't' as u8);
}

fn test_tag() {
    tag t { tag1; tag2(int); tag3(int, u8, char); }
    let port[t] po = port();
    let chan[t] ch = chan(po);
    ch <| tag1;
    ch <| tag2(10);
    ch <| tag3(10, 11u8, 'A');
    let t t1;
    po |> t1;
    assert (t1 == tag1);
    po |> t1;
    assert (t1 == tag2(10));
    po |> t1;
    assert (t1 == tag3(10, 11u8, 'A'));
}

fn test_chan() {
    let port[chan[int]] po = port();
    let chan[chan[int]] ch = chan(po);
    let port[int] po0 = port();
    let chan[int] ch0 = chan(po0);
    ch <| ch0;
    let chan[int] ch1;
    po |> ch1;
    // Does the transmitted channel still work?

    ch1 <| 10;
    let int i;
    po0 |> i;
    assert (i == 10);
}

fn main() {
    test_rec();
    test_vec();
    test_str();
    test_tag();
    test_chan();
}