pkg/analysis_server/test/integration/analysis/reanalyze_concurrent_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.

/// This test verifies that if reanalysis is performed while reanalysis is in
/// progress, no problems occur.
///
/// See dartbug.com/21448.
import 'package:test/test.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';

import '../support/integration_tests.dart';

void main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(ReanalyzeTest);
  });
}

@reflectiveTest
class ReanalyzeTest extends AbstractAnalysisServerIntegrationTest {
  @TestTimeout(Timeout.factor(2))
  Future<void> test_reanalyze_concurrent() async {
    var pathname = sourcePath('test.dart');
    var text = '''
// Do a bunch of imports so that analysis has some work to do.
import 'dart:io';
import 'dart:convert';
import 'dart:async';

void f() {}''';
    writeFile(pathname, text);
    await standardAnalysisSetup();

    await analysisFinished;
    await sendAnalysisReanalyze();

    // Wait for reanalysis to start.
    await onServerStatus.first;

    await sendAnalysisReanalyze();
    await analysisFinished;

    // Now that reanalysis has finished, give the server an extra second
    // to make sure it doesn't crash.
    await Future.delayed(Duration(seconds: 1));
  }
}