记录器无法解析com.android.packageinstaller Espresso生成的代码

Question

我只是尝试测试一个简单的应用程序，该应用程序将获取设备的位置并将其打印在TextView上，我在Android Studio上使用了Record Espresso Test选项，我测试了运行时权限请求对话框并获得了一堆代码，但是我一直没有能够解决com.android.packageinstaller符号，我注意到该按钮用于请求权限对话框，如何解决此错误？

这是记录器生成的代码：

import android.support.test.espresso.ViewInteraction;
import android.support.test.rule.ActivityTestRule;
import android.support.test.runner.AndroidJUnit4;
import android.test.suitebuilder.annotation.LargeTest;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;

import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeMatcher;
import org.hamcrest.core.IsInstanceOf;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;

import static android.support.test.espresso.Espresso.onView;
import static android.support.test.espresso.assertion.ViewAssertions.matches;
import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
import static android.support.test.espresso.matcher.ViewMatchers.withId;
import static android.support.test.espresso.matcher.ViewMatchers.withText;
import static org.hamcrest.Matchers.allOf;


@LargeTest
@RunWith(AndroidJUnit4.class)
public class MainActivityTest {

    @Rule
    public ActivityTestRule<MainActivity> mActivityTestRule = new ActivityTestRule<>(MainActivity.class);

    @Test
    public void mainActivityTest() {
        ViewInteraction button = onView(
                allOf(withId(com.android.packageinstaller.R.id.permission_allow_button),
                        childAtPosition(
                                allOf(withId(com.android.packageinstaller.R.id.button_group),
                                        childAtPosition(
                                                IsInstanceOf.<View>instanceOf(android.widget.LinearLayout.class),
                                                0)),
                                1),
                        isDisplayed()));
        button.check(matches(isDisplayed()));

        ViewInteraction button2 = onView(
                allOf(withId(com.android.packageinstaller.R.id.permission_deny_button),
                        childAtPosition(
                                allOf(withId(com.android.packageinstaller.R.id.button_group),
                                        childAtPosition(
                                                IsInstanceOf.<View>instanceOf(android.widget.LinearLayout.class),
                                                0)),
                                0),
                        isDisplayed()));
        button2.check(matches(isDisplayed()));

        ViewInteraction textView = onView(
                allOf(withId(R.id.text_view), withText("Your location: 10.910198 / -74.777500"),
                        childAtPosition(
                                childAtPosition(
                                        withId(android.R.id.content),
                                        0),
                                0),
                        isDisplayed()));
        textView.check(matches(withText("Your location: 10.910198 / -74.777500")));

    }

    private static Matcher<View> childAtPosition(
            final Matcher<View> parentMatcher, final int position) {

        return new TypeSafeMatcher<View>() {
            @Override
            public void describeTo(Description description) {
                description.appendText("Child at position " + position + " in parent ");
                parentMatcher.describeTo(description);
            }

            @Override
            public boolean matchesSafely(View view) {
                ViewParent parent = view.getParent();
                return parent instanceof ViewGroup && parentMatcher.matches(parent)
                        && view.equals(((ViewGroup) parent).getChildAt(position));
            }
        };
    }
}

Answer 1

网上打了个戳之后，我发现Espresso不适合测试运行时权限 ，这主要是因为权限对话框来自其他软件包，而Expresso仅适用于当前软件包，但是我们可以使用UiAutomator api来完成工作，例如显示在这篇文章中： https : //blog.egorand.me/testing-runtime-permissions-lessons-learned/