tests/dartdevc/libraries_test.dart

// 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.

import 'package:expect/expect.dart';

import 'dart:_foreign_helper' show JS;
import 'dart:_runtime' as dart;

part 'libraries_part.dart';

void main() {
  // Test getLibrary(...)
  var core = dart.getLibrary('dart:core');
  // Using the print method to verify we get the same library object.
  // The print method is only used here because we know it is a member of the
  // dart:core library.
  var printMethod = JS('', '#.print', core);
  // Tearoffs are wrapped, so we must extract their bound method.
  var printTearoff = print;
  Expect.equals(JS('', '#._boundMethod', printTearoff), printMethod);

  // Test getLibraries()
  // Note that we call `getLibraries` after an access to `Expect` as DDC may
  // lazily load `package:expect/expect.dart`.
  var libraries = dart.getLibraries();
  Expect.isTrue(libraries.contains('dart:core'));
  Expect.isTrue(libraries.contains('package:expect/expect.dart'));

  // Test getParts(...)
  var expectParts = dart.getParts('package:expect/expect.dart');
  Expect.isTrue(expectParts.isEmpty);

  var testLibraries = libraries
      .where((l) => l.endsWith('libraries_test.dart'))
      .toList();
  Expect.isTrue(testLibraries.length == 1);
  var testParts = dart.getParts(testLibraries.first);
  Expect.isTrue(testParts.length == 1);
  Expect.isTrue(testParts.first.endsWith('libraries_part.dart'));
}