export c fn main() -> i32 {
    let head_request: Span<u8> = "HEAD /health\n\n"
    let options_request: Span<u8> = "OPTIONS /users\naccess-control-request-method: POST\n\n"
    if !std.http.requestIsHead(head_request, "/health") {
        return 11
    }
    if std.http.requestIsHead(options_request, "/users") {
        return 12
    }
    if !std.http.requestIsOptions(options_request, "/users") {
        return 13
    }
    if std.http.requestIsOptions(head_request, "/health") {
        return 14
    }
    var preflight_buf: [256]u8 = [0_u8; 256]
    let preflight: Maybe<Span<u8>> = std.http.writeCorsPreflight(preflight_buf, "*", "GET, POST, OPTIONS", "content-type, authorization")
    if !preflight.has {
        return 15
    }
    if !std.str.contains(preflight.value, "204 No Content") {
        return 16
    }
    if !std.str.contains(preflight.value, "HTTP/1.1 204 No Content\r\nconnection: close\r\n") {
        return 27
    }
    if !std.str.contains(preflight.value, "access-control-allow-origin: *") {
        return 17
    }
    if !std.str.contains(preflight.value, "access-control-allow-methods: GET, POST, OPTIONS") {
        return 18
    }
    if !std.str.contains(preflight.value, "access-control-allow-headers: content-type, authorization") {
        return 19
    }
    if !std.str.contains(preflight.value, "content-length: 0") {
        return 20
    }
    var json_buf: [256]u8 = [0_u8; 256]
    let json: Maybe<Span<u8>> = std.http.writeCorsJsonResponse(json_buf, "200 OK", "{\"ok\":true}", "https://app.example")
    if !json.has {
        return 21
    }
    if !std.str.contains(json.value, "200 OK") {
        return 22
    }
    if !std.str.contains(json.value, "content-type: application/json") {
        return 23
    }
    if !std.str.contains(json.value, "\r\nconnection: close\r\n") {
        return 29
    }
    if !std.str.contains(json.value, "access-control-allow-origin: https://app.example") {
        return 24
    }
    let body: Maybe<Span<u8>> = std.http.responseBodyBytes(json.value)
    if !body.has {
        return 25
    }
    if !std.mem.eql(body.value, "{\"ok\":true}") {
        return 26
    }
    return 32
}