// Copyright (c) 2014, 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.

import 'package:expect/expect.dart';
import "package:async_helper/async_helper.dart";
import 'compiler_helper.dart';
import 'type_mask_test_helper.dart';

const String TEST = """

method(a) {  // Called via [foo] with integer then double.
  return a;
}

const foo = method;

returnNum(x) {
  return foo(x);
}

main() {
  returnNum(10);
  returnNum(10.5);
}
""";

void main() {
  Uri uri = new Uri(scheme: 'source');
  var compiler = compilerFor(TEST, uri);
  asyncTest(() => compiler.run(uri).then((_) {
        var typesInferrer = compiler.globalInference.typesInferrerInternal;

        checkArgument(String functionName, type) {
          var functionElement = findElement(compiler, functionName);
          var signature = functionElement.functionSignature;
          var element = signature.requiredParameters.first;
          Expect.equals(
              type,
              simplify(typesInferrer.getTypeOfElement(element), compiler),
              functionName);
        }

        checkArgument('method', compiler.closedWorld.commonMasks.numType);
        checkArgument('returnNum', compiler.closedWorld.commonMasks.numType);
      }));
}