load(libdir + 'asserts.js');

function test() {
  assertTypeErrorMessage(() => { ctypes.StructType("a").define.call(1); },
                         "StructType.prototype.define called on incompatible object, got the object (new Number(1))");
  assertTypeErrorMessage(() => { ctypes.StructType("a").define.call(ctypes.int32_t); },
                         "StructType.prototype.define called on non-StructType, got ctypes.int32_t");

  let p = Object.getPrototypeOf(ctypes.StructType("a", [ { "x": ctypes.int32_t, } ])());
  let o = {};
  Object.setPrototypeOf(o, p);
  assertTypeErrorMessage(() => { let a = o.x; },
                         "StructType property getter called on incompatible object, got <<error converting value to string>>");
  assertTypeErrorMessage(() => { o.x = 1; },
                         "StructType property setter called on incompatible object, got <<error converting value to string>>");

  o = ctypes.int32_t(0);
  Object.setPrototypeOf(o, p);
  assertTypeErrorMessage(() => { let a = o.x; },
                         "StructType property getter called on non-StructType CData, got ctypes.int32_t(0)");
  assertTypeErrorMessage(() => { o.x = 1; },
                         "StructType property setter called on non-StructType CData, got ctypes.int32_t(0)");

  assertTypeErrorMessage(() => { ctypes.StructType("a", [])().addressOfField.call(1); },
                         "StructType.prototype.addressOfField called on incompatible object, got the object (new Number(1))");
  assertTypeErrorMessage(() => { ctypes.StructType("a", [])().addressOfField.call(ctypes.int32_t(0)); },
                         "StructType.prototype.addressOfField called on non-StructType CData, got ctypes.int32_t(0)");
}

if (typeof ctypes === "object")
  test();