tests/compiler/dart2js/show_package_warnings_test.dart

// Copyright (c) 2014, 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.

// Test that the '--show-package-warnings' option works as intended.

import 'package:async_helper/async_helper.dart';
import 'package:expect/expect.dart';

import 'memory_compiler.dart';

/// Error code that creates 1 warning, 1 hint, and 1 info.
const ERROR_CODE = """
m(Object o) {
  if (o is String) {
    o = o.length;
  }
}""";

const SOURCE = const {
  'main.dart': """
import 'package:pkg_error1/pkg_error1.dart';
import 'package:pkg_error2/pkg_error2.dart';
import 'package:pkg_noerror/pkg_noerror.dart';
import 'error.dart';
""",

  'error.dart': ERROR_CODE,

  'pkg/pkg_error1/pkg_error1.dart': """
import 'package:pkg_error2/pkg_error2.dart';
import 'package:pkg_noerror/pkg_noerror.dart';
$ERROR_CODE""",

  'pkg/pkg_error2/pkg_error2.dart': """
import 'package:pkg_error1/pkg_error1.dart';
import 'package:pkg_noerror/pkg_noerror.dart';
$ERROR_CODE""",

  'pkg/pkg_noerror/pkg_noerror.dart': """
import 'package:pkg_error1/pkg_error1.dart';
import 'package:pkg_error2/pkg_error2.dart';
"""};

void test(List<Uri> entryPoints,
          {bool showPackageWarnings: false,
           int warnings: 0,
           int hints: 0,
           int infos: 0}) {
  var options = ['--analyze-only', '--analyze-all'];
  if (showPackageWarnings) {
    options.add('--show-package-warnings');
  }
  var collector = new DiagnosticCollector();
  var compiler = compilerFor(SOURCE,
                             options: options,
                             packageRoot: Uri.parse('memory:pkg/'),
                             diagnosticHandler: collector);
  Uri mainUri = null;
  if (entryPoints.length == 1) {
    mainUri = entryPoints[0];
  } else {
    compiler.librariesToAnalyzeWhenRun = entryPoints;
  }
  asyncTest(() => compiler.run(mainUri).then((_) {
    print('==================================================================');
    print('test: $entryPoints showPackageWarnings=$showPackageWarnings');
    Expect.equals(0, collector.errors.length,
                  'Unexpected errors: ${collector.errors}');
    Expect.equals(warnings, collector.warnings.length,
                  'Unexpected warnings: ${collector.warnings}');
    Expect.equals(hints, collector.hints.length,
                  'Unexpected hints: ${collector.hints}');
    Expect.equals(infos, collector.infos.length,
                  'Unexpected infos: ${collector.infos}');
    print('==================================================================');
  }));
}

void main() {
  test([Uri.parse('memory:main.dart')],
       showPackageWarnings: true,
       // From error.dart, package:pkg_error1 and package:pkg_error2:
       warnings: 3, hints: 3, infos: 3);
  test([Uri.parse('memory:main.dart')],
       showPackageWarnings: false,
       // From error.dart only:
       warnings: 1, hints: 1 + 2 /* from summary */, infos: 1);
  test([Uri.parse('package:pkg_error1/pkg_error1.dart')],
       showPackageWarnings: true,
       // From package:pkg_error1 and package:pkg_error2:
       warnings: 2, hints: 2, infos: 2);
  test([Uri.parse('package:pkg_error1/pkg_error1.dart')],
       showPackageWarnings: false,
       // From package:pkg_error1/pkg_error1.dart only:
       warnings: 1, hints: 1 + 1 /* from summary */, infos: 1);
  test([Uri.parse('package:pkg_noerror/pkg_noerror.dart')],
       showPackageWarnings: true,
       // From package:pkg_error1 and package:pkg_error2:
       warnings: 2, hints: 2, infos: 2);
  test([Uri.parse('package:pkg_noerror/pkg_noerror.dart')],
       showPackageWarnings: false,
       hints: 2 /* from summary */);
}