// 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 that we can load a wasm module, find a function, and call it.

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

void main() {
  test("function import", () {
    // void reportStuff() { report(123, 456); }
    var data = Uint8List.fromList([
      0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x09, 0x02, 0x60,
      0x02, 0x7e, 0x7e, 0x00, 0x60, 0x00, 0x00, 0x02, 0x0e, 0x01, 0x03, 0x65,
      0x6e, 0x76, 0x06, 0x72, 0x65, 0x70, 0x6f, 0x72, 0x74, 0x00, 0x00, 0x03,
      0x02, 0x01, 0x01, 0x04, 0x05, 0x01, 0x70, 0x01, 0x01, 0x01, 0x05, 0x03,
      0x01, 0x00, 0x02, 0x06, 0x08, 0x01, 0x7f, 0x01, 0x41, 0x80, 0x88, 0x04,
      0x0b, 0x07, 0x18, 0x02, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72, 0x79, 0x02,
      0x00, 0x0b, 0x72, 0x65, 0x70, 0x6f, 0x72, 0x74, 0x53, 0x74, 0x75, 0x66,
      0x66, 0x00, 0x01, 0x0a, 0x10, 0x01, 0x0e, 0x00, 0x42, 0xfb, 0x00, 0x42,
      0xc8, 0x03, 0x10, 0x80, 0x80, 0x80, 0x80, 0x00, 0x0b,
    ]);

    int report_x = -1;
    int report_y = -1;

    var inst = WasmModule(data).instantiate()
      .addFunction("env", "report", (int x, int y) {
        report_x = x;
        report_y = y;
      }).build();
    var fn = inst.lookupFunction("reportStuff");
    fn();
    expect(123, report_x);
    expect(456, report_y);
  });
}