// Copyright (c) 2019, 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 To infer the type of element:
/// ...
/// If element is a mapEntry ek: ev:
/// ...
/// If P is Map<Pk, Pv> then the inferred key type of element is the inferred
/// type of ek in context Pk and the inferred value type of element is the
/// inferred type of ev in context Pv.
///
/// @description Checks that if P is Map<Pk, Pv> then the inferred key type of
/// element is the inferred type of ek in context Pk and the inferred value type
/// of element is the inferred type of ev in context Pv.
/// @description Checks that if P is Set<Ps> then the inferred set element type
/// of element is the inferred type of the expression e1 in context Ps.
/// @author sgrekhov@unipro.ru

main() {
  Map<double, double> x1 = {1 + 1: 1.0};  //# 01: compile-time error
  Map<double, double> x2 = {1.0: 1 + 1};  //# 02: compile-time error
}