// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// Test throwing exceptions from an imported function.

import "package:test/test.dart";
import "package:wasm/wasm.dart";
import "dart:typed_data";

void main() {
  test("exception thrown from imported function", () {
    // void fn() {
    //   a();
    //   b();
    // }
    var data = Uint8List.fromList([
      0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x04, 0x01, 0x60,
      0x00, 0x00, 0x02, 0x11, 0x02, 0x03, 0x65, 0x6e, 0x76, 0x01, 0x61, 0x00,
      0x00, 0x03, 0x65, 0x6e, 0x76, 0x01, 0x62, 0x00, 0x00, 0x03, 0x02, 0x01,
      0x00, 0x04, 0x05, 0x01, 0x70, 0x01, 0x01, 0x01, 0x05, 0x03, 0x01, 0x00,
      0x02, 0x06, 0x08, 0x01, 0x7f, 0x01, 0x41, 0x80, 0x88, 0x04, 0x0b, 0x07,
      0x0f, 0x02, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72, 0x79, 0x02, 0x00, 0x02,
      0x66, 0x6e, 0x00, 0x02, 0x0a, 0x10, 0x01, 0x0e, 0x00, 0x10, 0x80, 0x80,
      0x80, 0x80, 0x00, 0x10, 0x81, 0x80, 0x80, 0x80, 0x00, 0x0b,
    ]);

    bool called_b = false;
    var thrownException = Exception("Hello exception!");
    var inst = WasmModule(data).instantiate().addFunction("env", "a", () {
      throw thrownException;
    }).addFunction("env", "b", () {
      called_b = true;
    }).build();
    var fn = inst.lookupFunction("fn");
    expect(() => fn(), throwsA(thrownException));
    expect(called_b, isFalse);

    bool called_a = false;
    inst = WasmModule(data).instantiate().addFunction("env", "a", () {
      called_a = true;
    }).addFunction("env", "b", () {
      called_b = true;
    }).build();
    fn = inst.lookupFunction("fn");
    fn();
    expect(called_a, isTrue);
    expect(called_b, isTrue);
  });
}