[英]Espresso - how to get current activity to test Fragments?
I have been playing around with Espresso
tests for couple weeks now and I finally decided to start testing Fragments.我已经玩了几个星期的
Espresso
测试了,我终于决定开始测试 Fragments。
Immediately I ran into a problem, how do I get current activity?我立即遇到了问题,如何获取当前活动?
My app uses data from login so I can't launch the activity with test rule.我的应用程序使用登录数据,因此我无法使用测试规则启动活动。 Simply put, is there something similar to
getActivity()
when doing espresso tests?简单地说,在做 espresso 测试时有没有类似于
getActivity()
东西?
I usually get it like this, it looks (and probably is) hacky but, hey, it works我通常是这样理解的,它看起来(并且可能是)hacky 但是,嘿,它有效
import static android.support.test.InstrumentationRegistry.getInstrumentation;
public class MyTest {
private Activity getActivityInstance(){
final Activity[] currentActivity = {null};
getInstrumentation().runOnMainSync(new Runnable(){
public void run(){
Collection<Activity> resumedActivity = ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(Stage.RESUMED);
Iterator<Activity> it = resumedActivity.iterator();
currentActivity[0] = it.next();
}
});
return currentActivity[0];
}
}
Here is lelloman's solution with a slight change in Kotlin:这是leloman 的解决方案,在 Kotlin 中略有变化:
import android.app.Activity
import androidx.test.platform.app.InstrumentationRegistry.getInstrumentation
import androidx.test.runner.lifecycle.ActivityLifecycleMonitorRegistry
import androidx.test.runner.lifecycle.Stage
object EspressoHelper {
fun getCurrentActivity(): Activity? {
var currentActivity: Activity? = null
getInstrumentation().runOnMainSync { run { currentActivity = ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(Stage.RESUMED).elementAtOrNull(0) } }
return currentActivity
}
}
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