使用 build 管理的设备扩展测试

android.experimental.androidTest.numManagedDeviceShards=<number_of_shards>

firebaseTestLab {
  ...
  testOptions {
    targetedShardDurationMinutes = 2
  }
}

firebaseTestLab {
  ...

  /**
   * A path to a JSON file that contains service account credentials to access to
   * a Firebase Test Lab project.
   */
  serviceAccountCredentials.set(file("your_service_account_credentials.json"))


  testOptions {
    fixture {
      /**
       * Whether to grant permissions on the device before tests begin.
       * Available options are "all" or "none".
       *
       * Default value is "all".
       */
      grantedPermissions = "all"

      /**
       * Map of files to push to the device before starting the test.
       *
       * The key is the location on the device.
       * The value is the location of the file, either local or in Google Cloud.
       */
      extraDeviceFiles["/sdcard/dir1/file1.txt"] = "local/file.txt"
      extraDeviceFiles["/sdcard/dir2/file2.txt"] = "gs://bucket/file.jpg"

      /**
       * The name of the network traffic profile.
       *
       * Specifies network conditions to emulate when running tests.
       *
       * Default value is empty.
       */
      networkProfile = "LTE"
    }

    execution {
      /**
       * The maximum time to run the test execution before cancellation,
       * measured in minutes. Does not include the setup or teardown of device,
       * and is handled server-side.
       *
       * The maximum possible testing time is 45 minutes on physical devices
       * and 60 minutes on virtual devices.
       *
       * Defaults to 15 minutes.
       */
       timeoutMinutes = 30

      /**
       * Number of times the test should be rerun if tests fail.
       * The number of times a test execution should be retried if one
       * or more of its test cases fail.
       *
       * The max number of times is 10.
       *
       * The default number of times is 0.
       */
      maxTestReruns = 2

      /**
       * Ensures only a single attempt is made for each execution if
       * an infrastructure issue occurs. This doesn't affect `maxTestReruns`.
       * Normally, two or more attempts are made by Firebase Test Lab if a
       * potential infrastructure issue is detected. This is best enabled for
       * latency sensitive workloads. The number of execution failures might be
       * significantly greater with `failFast` enabled.
       *
       * Defaults to false.
       */
      failFast = false

      /**
       * The number of shards to split the tests across.
       *
       * Default to 0 for no sharding.
       */
      numUniformShards = 20
    }

    /**
     * For smart sharding, the target length of time each shard should takes in
     * minutes. Maxes out at 50 shards for physical devices and 100 shards for
     * virtual devices.
     *
     * Only one of numUniformShards or targetedShardDurationMinutes can be set.
     *
     * Defaults to 0 for no smart sharding.
     */
     targetedShardDurationMinutes = 15
    }

    results {
      /**
       * The name of the Google storage bucket to store the test results in.
       *
       * If left unspecified, the default bucket is used.
       *
       * Please refer to Firebase Test Lab permissions for required permissions
       * for using the bucket.
       */
      cloudStorageBucket = "bucketLocationName"

      /**
       * Name of test results for the Firebase console history list.
       * All tests results with the same history name are grouped
       * together in the Firebase console in a time-ordered test history list.
       *
       * Defaults to the application label in the APK manifest.
       */
      resultsHistoryName = "application-history"

      /**
       * List of paths to copy from the test device's storage to the test
       * results folder. These must be absolute paths under /sdcard or
       * /data/local/tmp.
       */
      directoriesToPull.addAll(
        "/sdcard/path/to/something"
      )

      /**
       * Whether to enable video recording during the test.
       *
       * Disabled by default.
       */
      recordVideo = false

      /**
       * Whether to enable performance metrics. If enabled, monitors and records
       * performance metrics such as CPU, memory, and network usage.
       *
       * Defaults to false.
       */
      performanceMetrics = true
  }
}