tools/fidl/gidl/backend/rust/conformance.tmpl

{{/*
// Copyright 2022 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.
*/}}

#![cfg(test)]
#![allow(unused_imports)]

use {
    assert_matches::assert_matches,
    fidl::{AsHandleRef, Error, Handle, HandleDisposition, HandleInfo, HandleOp, ObjectType, Rights},
    fidl::encoding::{Context, Decode, Decoder, Encoder, WireFormatVersion},
    fidl_test_conformance as test_conformance,
    fuchsia_zircon_status::Status,
    fuchsia_zircon_types as zx_types,
    gidl_util::{
        HandleDef, HandleSubtype, copy_handle, create_handles, decode_value,
        get_handle_koid, get_info_handle_valid, repeat, select_handle_infos,
        select_raw_handle_infos, to_zx_handle_t, to_zx_handle_disposition_t,
    },
};

const _V2_CONTEXT: Context = Context { wire_format_version: WireFormatVersion::V2 };

{{ range .EncodeSuccessCases }}
#[test]
fn test_{{ .Name }}_encode() {
    {{- if .HandleDefs }}
    let handle_defs = create_handles(&{{ .HandleDefs }});
    {{- end }}
    let{{ if .IsResource }} mut{{ end }} value = {{ .Value }};
    let mut bytes = Vec::new();
    let mut handle_dispositions = Vec::new();
    bytes.resize(65536, 0xcd); // fill with junk data
    Encoder::encode_with_context::<{{ .ValueType }}>(
        {{ .Context }}, &mut bytes, &mut handle_dispositions, &{{ if .IsResource }}mut {{ end }} value).unwrap();
    assert_eq!(bytes, &{{ .Bytes }});
    {{- if .HandleDispositions }}
    assert_eq!(
        handle_dispositions.iter().map(to_zx_handle_disposition_t).collect::<Vec<_>>(),
        &{{ .HandleDispositions }}
    );
    {{- else if .Handles }}
    assert_eq!(
        handle_dispositions.iter().map(to_zx_handle_t).collect::<Vec<_>>(),
        &{{ .Handles }}
    );
    {{- else }}
    assert_eq!(handle_dispositions, &[]);
    {{- end }}
}
{{ end }}

{{ range .DecodeSuccessCases }}
#[test]
fn test_{{ .Name }}_decode() {
    let bytes = &{{ .Bytes }};
    {{- if .HandleDefs }}
    let handle_defs = create_handles(&{{ .HandleDefs }});
    let _handle_koids = handle_defs.iter().map(get_handle_koid).collect::<Vec<_>>();
    let mut handle_infos = select_handle_infos(&handle_defs, &{{ .Handles }});
    {{- else }}
    let mut handle_infos = Vec::new();
    {{- end }}
    let mut value = fidl::new_empty!({{ .ValueType }});
    Decoder::decode_with_context::<{{ .ValueType }}>({{ .Context }}, bytes, &mut handle_infos, &mut value).unwrap();
    {{ .EqualityCheck }}
    {{- if .UnusedHandles }}
    let unused_handles = select_raw_handle_infos(&handle_defs, &{{ .UnusedHandles }});
    assert_eq!(
        unused_handles.iter().map(get_info_handle_valid).collect::<Vec<_>>(),
        repeat(Err(Status::BAD_HANDLE), unused_handles.len()),
    );
    {{- end }}
}
{{ end }}

{{ range .EncodeFailureCases }}
#[test]
fn test_{{ .Name }}_encode_failure() {
    {{- if .HandleDefs }}
    let handle_defs = create_handles(&{{ .HandleDefs }});
    {{- end }}
    let{{ if .IsResource }} mut{{ end }} value = {{ .Value }};
    let mut bytes = Vec::new();
    let mut handles = Vec::new();
    bytes.resize(65536, 0xcd); // fill with junk data
    match Encoder::encode_with_context::<{{ .ValueType }}>(
        {{ .Context }}, &mut bytes, &mut handles, &{{ if .IsResource }}mut {{ end }}value
    ) {
        Err(err) => assert_matches!(err, {{ .ErrorCode }} { .. }),
        Ok(_) => panic!("unexpected successful encoding"),
    }
    {{- if .HandleDefs }}
    drop(value);
    drop(handles);
    assert_eq!(
        handle_defs.iter().map(get_info_handle_valid).collect::<Vec<_>>(),
        repeat(Err(Status::BAD_HANDLE), handle_defs.len()),
    );
    {{- end }}
}
{{ end }}

{{ range .DecodeFailureCases }}
#[test]
fn test_{{ .Name }}_decode_failure() {
    let bytes = &{{ .Bytes }};
    {{- if .HandleDefs }}
    let handle_defs = create_handles(&{{ .HandleDefs }});
    let mut handle_infos = select_handle_infos(&handle_defs, &{{ .Handles }});
    {{- else }}
    let mut handle_infos = Vec::new();
    {{- end }}
    let mut value = fidl::new_empty!({{ .ValueType }});
    match Decoder::decode_with_context::<{{ .ValueType }}>({{ .Context }}, bytes, &mut handle_infos, &mut value) {
        Err(err) => assert_matches!(err, {{ .ErrorCode }} { .. }),
        Ok(_) => panic!("unexpected successful decoding"),
    }
    {{- if .HandleDefs }}
    drop(value);
    drop(handle_infos);
    assert_eq!(
        handle_defs.iter().map(get_info_handle_valid).collect::<Vec<_>>(),
        repeat(Err(Status::BAD_HANDLE), handle_defs.len()),
    );
    {{- end }}
}
{{ end }}