pkg/compiler/test/codegen/string_escapes_test.dart

// Copyright (c) 2011, 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:expect/async_helper.dart';
import 'package:expect/expect.dart';
import '../helpers/compiler_helper.dart';

// Test that the compiler handles string literals containing line terminators.

main() {
  runTests() async {
    Future<String> compileExpression(String expression) {
      var source = "foo() { return $expression; }";
      return compile(source, entry: "foo");
    }

    await compileExpression("''' \n\r\u2028\u2029'''").then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\n\u2028\u2029"') ||
            generated.contains(r"'\n\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression("r''' \n\r\u2028\u2029'''").then((
      String generated,
    ) {
      Expect.isTrue(
        generated.contains(r'"\n\u2028\u2029"') ||
            generated.contains(r"'\n\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression("r''' \r\n\u2028\u2029'''").then((
      String generated,
    ) {
      Expect.isTrue(
        generated.contains(r'"\u2028\u2029"') ||
            generated.contains(r"'\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression("r''' \r\u2028\u2029'''").then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\u2028\u2029"') ||
            generated.contains(r"'\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression("r''' \n\u2028\u2029'''").then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\u2028\u2029"') ||
            generated.contains(r"'\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression(
      "r'''\t\t      \t\t  \t\t  \t \t \n\r\u2028\u2029'''",
    ).then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\n\u2028\u2029"') ||
            generated.contains(r"'\n\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression(
      "r'''\\\t\\\t \\   \\  \t\\\t  \t \\\n\r\u2028\u2029'''",
    ).then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\n\u2028\u2029"') ||
            generated.contains(r"'\n\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression(
      "r'''\t\t      \t\t  \t\t  \t \t \\\n\r\u2028\u2029'''",
    ).then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\n\u2028\u2029"') ||
            generated.contains(r"'\n\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression(
      "r'''\\\t\\\t \\   \\  \t\\\t   \\\r\n\u2028\u2029'''",
    ).then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\u2028\u2029"') ||
            generated.contains(r"'\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression(
      "r'''\\\t\\\t \\   \\  \t\\\t   \\\r\u2028\u2029'''",
    ).then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\u2028\u2029"') ||
            generated.contains(r"'\u2028\u2029'"),
        generated,
      );
    });
    await compileExpression("'\u2028\u2029'").then((String generated) {
      Expect.isTrue(
        generated.contains(r'"\u2028\u2029"') ||
            generated.contains(r"'\u2028\u2029'"),
        generated,
      );
    });
  }

  asyncTest(() async {
    print('--test from kernel----------------------------------------------');
    await runTests();
  });
}