tests/compiler/dart2js/private_test.dart

// Copyright (c) 2012, 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 'dart:async';

import 'package:async_helper/async_helper.dart';
import 'package:compiler/src/diagnostics/messages.dart' show MessageKind;
import 'package:compiler/src/io/source_file.dart';

import 'mock_compiler.dart';

const String PRIVATE_SOURCE_URI = 'src:private';
const String PRIVATE_SOURCE = '''

var _privateVariable;
void _privateFunction() {}

class _PrivateClass {
  _PrivateClass();
  _PrivateClass.publicConstructor();
  _PrivateClass._privateConstructor();

  var _privateField;
  get _privateGetter => null;
  void set _privateSetter(var value) {}
  void _privateMethod() {}

  var publicField;
  get publicGetter => null;
  void set publicSetter(var value) {}
  void publicMethod() {}
}

class PublicClass extends _PrivateClass {
  PublicClass() : super();
  PublicClass.publicConstructor() : super.publicConstructor();
  PublicClass._privateConstructor() : super._privateConstructor();

  _PrivateClass get private => this;
}
''';


analyze(String text, [expectedWarnings]) {
  return () {
    if (expectedWarnings == null) expectedWarnings = [];
    if (expectedWarnings is !List) expectedWarnings = [expectedWarnings];

    MockCompiler compiler = new MockCompiler.internal(analyzeOnly: true);
    compiler.registerSource(Uri.parse(PRIVATE_SOURCE_URI), PRIVATE_SOURCE);
    compiler.diagnosticHandler =
        (uri, int begin, int end, String message, kind) {
      SourceFile sourceFile = compiler.sourceFiles[uri.toString()];
      if (sourceFile != null) {
        print(sourceFile.getLocationMessage(message, begin, end));
      } else {
        print(message);
      }
    };

    String source = '''
                    library public;
  
                    import '$PRIVATE_SOURCE_URI';
  
                    void main() {
                      PublicClass publicClass;
                      $text
                    }
                    ''';
    Uri uri = Uri.parse('src:public');
    compiler.registerSource(uri, source);
    return compiler.runCompiler(uri).then((_) {
      compareWarningKinds(text, expectedWarnings, compiler.warnings);
    });
  };
}

void main() {
  asyncTest(() => Future.forEach([
    // Read from private variable.
    analyze('var value = _privateVariable;', MessageKind.CANNOT_RESOLVE),
    // Write to private variable.
    analyze('_privateVariable = 0;', MessageKind.CANNOT_RESOLVE),
    // Access private function.
    analyze('var value = _privateFunction;', MessageKind.CANNOT_RESOLVE),
    // Call private function.
    analyze('_privateFunction();', MessageKind.CANNOT_RESOLVE),

    // Call unnamed (public) constructor on private class.
    analyze('new _PrivateClass();', MessageKind.CANNOT_RESOLVE),
    // Call public constructor on private class.
    analyze('new _PrivateClass.publicConstructor();',
            MessageKind.CANNOT_RESOLVE),
    // Call private constructor on private class.
    analyze('new _PrivateClass._privateConstructor();',
        MessageKind.CANNOT_RESOLVE),
    // Call public getter of private type.
    analyze('var value = publicClass.private;'),
    // Read from private field on private class.
    analyze('var value = publicClass.private._privateField;',
        MessageKind.PRIVATE_ACCESS),
    // Write to private field on private class.
    analyze('publicClass.private._privateField = 0;',
        MessageKind.PRIVATE_ACCESS),
    // Call private getter on private class.
    analyze('var value = publicClass.private._privateGetter;',
        MessageKind.PRIVATE_ACCESS),
    // Call private setter on private class.
    analyze('publicClass.private._privateSetter = 0;',
        MessageKind.PRIVATE_ACCESS),
    // Access private method on private class.
    analyze('var value = publicClass.private._privateMethod;',
        MessageKind.PRIVATE_ACCESS),
    // Call private method on private class.
    analyze('publicClass.private._privateMethod();',
        MessageKind.PRIVATE_ACCESS),

    // Read from public field on private class.
    analyze('var value = publicClass.private.publicField;'),
    // Write to public field on private class.
    analyze('publicClass.private.publicField = 0;'),
    // Call public getter on private class.
    analyze('var value = publicClass.private.publicGetter;'),
    // Call public setter on private class.
    analyze('publicClass.private.publicSetter = 0;'),
    // Access public method on private class.
    analyze('var value = publicClass.private.publicMethod;'),
    // Call public method on private class.
    analyze('publicClass.private.publicMethod();'),

    // Call unnamed (public) constructor on public class.
    analyze('publicClass = new PublicClass();'),
    // Call public constructor on public class.
    analyze('publicClass = new PublicClass.publicConstructor();'),
    // Call private constructor on public class.
    analyze('publicClass = new PublicClass._privateConstructor();',
        MessageKind.CANNOT_FIND_CONSTRUCTOR),
    // Read from private field on public class.
    analyze('var value = publicClass._privateField;',
        MessageKind.PRIVATE_ACCESS),
    // Write to private field on public class.
    analyze('publicClass._privateField = 0;',
        MessageKind.PRIVATE_ACCESS),
    // Call private getter on public class.
    analyze('var value = publicClass._privateGetter;',
        MessageKind.PRIVATE_ACCESS),
    // Call private setter on public class.
    analyze('publicClass._privateSetter = 0;',
        MessageKind.PRIVATE_ACCESS),
    // Access private method on public class.
    analyze('var value = publicClass._privateMethod;',
        MessageKind.PRIVATE_ACCESS),
    // Call private method on public class.
    analyze('publicClass._privateMethod();',
        MessageKind.PRIVATE_ACCESS),

    // Read from public field on public class.
    analyze('var value = publicClass.publicField;'),
    // Write to public field on public class.
    analyze('publicClass.publicField = 0;'),
    // Call public getter on public class.
    analyze('var value = publicClass.publicGetter;'),
    // Call public setter on public class.
    analyze('publicClass.publicSetter = 0;'),
    // Access public method on public class.
    analyze('var value = publicClass.publicMethod;'),
    // Call public method on public class.
    analyze('publicClass.publicMethod();'),
  ], (f) => f()));
}