tests/compiler/dart2js_native/native_call_arity2_frog_test.dart

// Copyright (c) 2011, 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 "dart:_js_helper";
import "package:expect/expect.dart";

// This is a similar test to NativeCallArity1FrogTest, but makes sure
// that subclasses also get the right number of arguments.

@Native("A")
class A {
  int foo([x, y]) native;
}

@Native("B")
class B extends A {
  int foo([x, y]) native;
}

makeA() native;
makeB() native;

void setup() native """
function inherits(child, parent) {
  if (child.prototype.__proto__) {
    child.prototype.__proto__ = parent.prototype;
  } else {
    function tmp() {};
    tmp.prototype = parent.prototype;
    child.prototype = new tmp();
    child.prototype.constructor = child;
  }
}
function A() {}
A.prototype.foo = function () { return arguments.length; };

function B() {}
B.prototype.foo = function () { return arguments.length; };
inherits(B, A);

makeA = function(){return new A;};
makeB = function(){return new B;};
""";

testDynamicContext() {
  var things = [makeA(), makeB()];
  var a = things[0];
  var b = things[1];

  Expect.equals(0, a.foo());
  Expect.equals(1, a.foo(10));
  Expect.equals(2, a.foo(10, 20));
  Expect.throws(() => a.foo(10, 20, 30));

  Expect.equals(1, a.foo(10));
  Expect.equals(2, a.foo(null, 20));
  Expect.throws(() => a.foo(10, 20, 30));

  Expect.equals(0, b.foo());
  Expect.equals(1, b.foo(10));
  Expect.equals(2, b.foo(10, 20));
  Expect.throws(() => b.foo(10, 20, 30));

  Expect.equals(1, b.foo(10));
  Expect.equals(2, b.foo(null, 20));
  Expect.throws(() => b.foo(10, 20, 30));
}

testStaticContext() {
  A a = makeA();
  B b = makeB();

  Expect.equals(0, a.foo());
  Expect.equals(1, a.foo(10));
  Expect.equals(2, a.foo(10, 20));
  Expect.throws(() => a.foo(10, 20, 30));

  Expect.equals(1, a.foo(10));
  Expect.equals(2, a.foo(null, 20));
  Expect.throws(() => a.foo(10, 20, 30));

  Expect.equals(0, b.foo());
  Expect.equals(1, b.foo(10));
  Expect.equals(2, b.foo(10, 20));
  Expect.throws(() => b.foo(10, 20, 30));

  Expect.equals(1, b.foo(10));
  Expect.equals(2, b.foo(null, 20));
  Expect.throws(() => b.foo(10, 20, 30));
}

main() {
  setup();
  testDynamicContext();
  testStaticContext();
}