Espresso自動(dòng)化測(cè)試逾礁，創(chuàng)建項(xiàng)目時(shí)已導(dǎo)入相對(duì)應(yīng)的包莹汤。

1. 打開sdk(D:\java\androidstudio\sdk\tools)中的tools文件夾下的uiautomatorviewer.bat，點(diǎn)擊下圖中紅色框中的內(nèi)容捕獲一幀畫面熄守。
   

   圖1.png

2. Run->點(diǎn)擊Record Espresso Test，提示運(yùn)行安裝程序

   
   
   圖2.png

3. 點(diǎn)擊確定后出現(xiàn)如下界面

   
   
   圖3.png

4. 點(diǎn)擊上圖中的Add Assertion按鈕，配合uiautomatorviewer點(diǎn)擊控件增加斷言

   
   
   圖4.png

5. 選擇Save Assertion來保存斷言并退出此窗口

   
   
   圖5.png

6. 點(diǎn)擊Complete Recording按鈕芍锦，完成錄制。此時(shí)需要填寫一個(gè)測(cè)試的類名飞盆，然后點(diǎn)擊Save娄琉。

   
   
   圖6.png

7. 保存之后，就在androidTest目錄的包下生成一個(gè)測(cè)試類.

   
   
   圖7.png

測(cè)試類代碼如下:

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

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

    @Test
    public void mainActivityTest() {
        ViewInteraction appCompatButton = onView(
                allOf(withId(R.id.btn_open), withText("open"),
                        withParent(allOf(withId(R.id.activity_main),
                                withParent(withId(android.R.id.content)))),
                        isDisplayed()));
        appCompatButton.perform(click());

        ViewInteraction textView = onView(
                allOf(withText("登錄成功"),
                        childAtPosition(
                                allOf(withId(R.id.activity_login),
                                        childAtPosition(
                                                withId(android.R.id.content),
                                                0)),
                                0),
                        isDisplayed()));
        textView.check(matches(withText("登錄成功")));

    }

    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));
            }
        };
    }
}

8. 這時(shí)吓歇，在剛剛生成的測(cè)試類右鍵孽水，選擇Run 'MainActivityTest' 點(diǎn)擊運(yùn)行，此時(shí)代碼執(zhí)行的過程即是剛剛操作的步驟城看。

   
   
   圖8.png