src/lib/fidl/cpp/tests/integration/fidl.cpp.wire.interop.test.fidl

// Copyright 2021 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fidl.cpp.wire.interop.test;

using zx;

/// [`Node`] exercises the major kinds of layout in FIDL: it's a table with a
/// union with structs.
type Node = table {
    1: name string:32;
    2: kind union {
        1: file File;
        2: directory Directory;
    };
};

type File = struct {
    content vector<uint8>;
};

type Directory = struct {
    children box<struct {
        elements vector<Node>:100;
    }>;
};

closed protocol Interop {
    /// [`RoundTrip`] exercises sending a complex data structure back and forth.
    strict RoundTrip(struct {
        node Node;
    }) -> (struct {
        node Node;
    });

    /// [`TryRoundTrip`] tests API and handling of the error syntax.
    strict TryRoundTrip(struct {
        node Node;
    }) -> (struct {
        node Node;
    }) error zx.Status;

    /// [`OneWay`] tests one way calls.
    strict OneWay(struct {
        node Node;
    });

    /// [`OnNode`] tests events.
    strict -> OnNode(struct {
        node Node;
    });
};