// Copyright (c) 2016, 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:test/test.dart';

import 'package:boolean_selector/boolean_selector.dart';

void main() {
  test("a variable reports itself", () {
    expect(new BooleanSelector.parse("foo").variables, equals(["foo"]));
  });

  test("a negation reports its contents", () {
    expect(new BooleanSelector.parse("!foo").variables, equals(["foo"]));
  });

  test("a parenthesized expression reports its contents", () {
    expect(new BooleanSelector.parse("(foo)").variables, equals(["foo"]));
  });

  test("an or reports its contents", () {
    expect(new BooleanSelector.parse("foo || bar").variables,
        equals(["foo", "bar"]));
  });

  test("an and reports its contents", () {
    expect(new BooleanSelector.parse("foo && bar").variables,
        equals(["foo", "bar"]));
  });

  test("a conditional reports its contents", () {
    expect(new BooleanSelector.parse("foo ? bar : baz").variables,
        equals(["foo", "bar", "baz"]));
  });

  test("BooleanSelector.all reports no variables", () {
    expect(BooleanSelector.all.variables, isEmpty);
  });

  test("BooleanSelector.none reports no variables", () {
    expect(BooleanSelector.none.variables, isEmpty);
  });
}