dart - 如何将环境变量传递到颤音驱动器测试

Question

我想将环境变量传递到 flutter驱动器测试。

Being able to read the value in the launched application or the test code would both be fine, because I need it in the application and if I could only get it in the test code, I could pass it to the application using 驱动程序.requestdata()

For example Travis allows me to specify environment variables that are not exposed in any way (like script content and log output).

I want to specify username and password this way so to be used inside the application.

Setting environment variables in Flutter is a similar question, but that seems overly complicated for my use case.

Answer 1

我尝试在运行驱动程序测试之前使用 Dart 的 Platform.environment 读取环境变量，它似乎工作正常。下面是一个简单的示例，它使用 FLUTTER_DRIVER_RESULTS 环境变量设置测试摘要的输出目录。

import 'dart:async';
import 'dart:io' show Platform;

import 'package:flutter_driver/flutter_driver.dart';
import 'package:test/test.dart';

void main() {
  // Load environmental variables
  String resultsDirectory =
    Platform.environment['FLUTTER_DRIVER_RESULTS'] ?? '/tmp';
  print('Results directory is $resultsDirectory');

  group('increment button test', () {
    FlutterDriver driver;

    setUpAll(() async {
      // Connect to the app
      driver = await FlutterDriver.connect();
    });

    tearDownAll(() async {
      if (driver != null) {
        // Disconnect from the app
        driver.close();
      }
    });

    test('measure', () async {
      // Record the performance timeline of things that happen
      Timeline timeline = await driver.traceAction(() async {
        // Find the scrollable user list
        SerializableFinder incrementButton = find.byValueKey(
            'increment_button');

        // Click the button 10 times
        for (int i = 0; i < 10; i++) {
          await driver.tap(incrementButton);

          // Emulate time for a user's finger between taps
          await new Future<Null>.delayed(new Duration(milliseconds: 250));
        }

      });
        TimelineSummary summary = new TimelineSummary.summarize(timeline);
        summary.writeSummaryToFile('increment_perf',
            destinationDirectory: resultsDirectory, pretty: true);
        summary.writeTimelineToFile('increment_perf',
            destinationDirectory: resultsDirectory, pretty: true);
    });
  });
}