LibTest/math/atan_A03_t01.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.

// @dart = 2.9

/// @assertion double atan(num x)
/// Converts [x] to a dobule and returns its arc tangent in radians.
/// @description Checks that Error is thrown when an argument is a null (not a
/// number).
/// @author msyabro
/// @reviewer pagolubev
/// @needsreview undocumented


import "dart:math" as Math;
import "../../Utils/expect.dart";

main() {
  Expect.throws(() {
    Math.atan(null);
  });
}