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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is a CLI library; we use prints as part of the interface.
// ignore_for_file: avoid_print
import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:flutter_driver/flutter_driver.dart';
import 'package:path/path.dart' as path;
import 'common.dart';
/// Flutter Driver test output directory.
///
/// Tests should write any output files to this directory. Defaults to the path
/// set in the FLUTTER_TEST_OUTPUTS_DIR environment variable, or `build` if
/// unset.
String testOutputsDirectory =
Platform.environment['FLUTTER_TEST_OUTPUTS_DIR'] ?? 'build';
/// The callback type to handle [Response.data] after the test
/// succeeds.
typedef ResponseDataCallback = FutureOr<void> Function(Map<String, dynamic>?);
/// Writes a json-serializable data to
/// [testOutputsDirectory]/`testOutputFilename.json`.
///
/// This is the default `responseDataCallback` in [integrationDriver].
Future<void> writeResponseData(
Map<String, dynamic>? data, {
String testOutputFilename = 'integration_response_data',
String? destinationDirectory,
}) async {
destinationDirectory ??= testOutputsDirectory;
await fs.directory(destinationDirectory).create(recursive: true);
final File file = fs.file(path.join(
destinationDirectory,
'$testOutputFilename.json',
));
final String resultString = _encodeJson(data, true);
await file.writeAsString(resultString);
}
/// Adaptor to run an integration test using `flutter drive`.
///
/// To run an integration test `<test_name>.dart` using `flutter drive`, put a file named
/// `<test_name>_test.dart` in the app's `test_driver` directory:
///
/// ```dart
/// import 'dart:async';
///
/// import 'package:integration_test/integration_test_driver.dart';
///
/// Future<void> main() async => integrationDriver();
///
/// ```
///
/// ## Parameters:
///
/// `timeout` controls the longest time waited before the test ends.
/// It is not necessarily the execution time for the test app: the test may
/// finish sooner than the `timeout`.
///
/// `responseDataCallback` is the handler for processing [Response.data].
/// The default value is `writeResponseData`.
Future<void> integrationDriver({
Duration timeout = const Duration(minutes: 20),
ResponseDataCallback? responseDataCallback = writeResponseData,
}) async {
final FlutterDriver driver = await FlutterDriver.connect();
final String jsonResult = await driver.requestData(null, timeout: timeout);
final Response response = Response.fromJson(jsonResult);
await driver.close();
if (response.allTestsPassed) {
print('All tests passed.');
if (responseDataCallback != null) {
await responseDataCallback(response.data);
}
exit(0);
} else {
print('Failure Details:\n${response.formattedFailureDetails}');
exit(1);
}
}
const JsonEncoder _prettyEncoder = JsonEncoder.withIndent(' ');
String _encodeJson(Map<String, dynamic>? jsonObject, bool pretty) {
return pretty ? _prettyEncoder.convert(jsonObject) : json.encode(jsonObject);
}