// 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.

library dart_style.test.utils;

import 'dart:io';
import 'dart:mirrors';

import 'package:path/path.dart' as p;
import 'package:scheduled_test/descriptor.dart' as d;
import 'package:scheduled_test/scheduled_process.dart';
import 'package:scheduled_test/scheduled_test.dart';

const unformattedSource = 'void  main()  =>  print("hello") ;';
const formattedSource = 'void main() => print("hello");\n';

/// Runs the command line formatter, passing it [args].
ScheduledProcess runFormatter([List<String> args]) {
  if (args == null) args = [];

  // Locate the "test" directory. Use mirrors so that this works with the test
  // package, which loads this suite into an isolate.
  var testDir = p.dirname(
      currentMirrorSystem().findLibrary(#dart_style.test.utils).uri.toFilePath());

  var formatterPath = p.normalize(p.join(testDir, "../bin/format.dart"));

  args.insert(0, formatterPath);

  // Use the same package root, if there is one.
  if (Platform.packageRoot != null && Platform.packageRoot.isNotEmpty) {
    args.insert(0, "--package-root=${Platform.packageRoot}");
  } else if (Platform.packageConfig != null &&
      Platform.packageConfig.isNotEmpty) {
    args.insert(0, "--packages=${Platform.packageConfig}");
  }

  return new ScheduledProcess.start(Platform.executable, args);
}

/// Runs the command line formatter, passing it the test directory followed by
/// [args].
ScheduledProcess runFormatterOnDir([List<String> args]) {
  if (args == null) args = [];
  return runFormatter([d.defaultRoot]..addAll(args));
}

/// Set up the scheduled test suite.
///
/// Configures the unit test output and makes a sandbox directory for the
/// scheduled tests to run in.
void setUpTestSuite() {
  // Make a sandbox directory for the scheduled tests to run in.
  setUp(() {
    var tempDir = Directory.systemTemp.createTempSync('dart_style.test.');
    d.defaultRoot = tempDir.path;

    currentSchedule.onComplete.schedule(() {
      d.defaultRoot = null;
      return tempDir.delete(recursive: true);
    });
  });
}