Testing

Use case: assert a pure helper

// fragment-only
fn add(a: int, b: int) -> int {
    return a + b
}

test add_works {
    assert add(2, 3) == 5;
}

fn main(caps: Caps) -> int {
    return add(2, 3)
}

vow test tests/lang/add_test.vow

Use case: router without I/O

Framework packages expose router_try_dispatch / try_handle for unit tests (no accept loop). Handlers are fn(Request) -> Response; tests assert status codes only.

import lib.router
import lib.request
import lib.response

fn stub(_req: request.Request) -> response.Response {
    return response.send(200, "ok")
}

test "route matches" {
    let r = router.router_get(router.router_new(), "/health", stub)
    assert router.router_try_dispatch(r, "GET /health") == 200
}

See vow-web-server and vow-frameworks/vow-web-server/tests/.

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