Question

我对Espresso测试非常陌生。我正在尝试以下测试。

1）Textview是否显示

2）Textview值正确

3）执行按钮单击。

我正在使用以下代码。

@Test
public void validateTextView() {    

    //To check textview text value is correct
    onView(withId(R.id.textView1)).check(matches(withText("Hello World!")));

    //To check button click is working
    onView(withId(R.id.testButton)).perform(click());

    //To check textview is visible or not
    onView(withId(R.id.textView1)).check(matches(isDisplayed()));
}

但是我在onView(withId(R.id.textView1)).check(matches(isDisplayed()));上遇到了错误

错误是

android.support.test.espresso.NoMatchingViewException: No views in hierarchy found matching: with text: is "Hello World!"

View Hierarchy:
+>DecorView{id=-1, visibility=VISIBLE, width=1080, height=1920, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params={(0,0)(fillxfill) ty=BASE_APPLICATION wanim=0x10302f8
fl=LAYOUT_IN_SCREEN LAYOUT_INSET_DECOR SPLIT_TOUCH HARDWARE_ACCELERATED DRAWS_SYSTEM_BAR_BACKGROUNDS
pfl=FORCE_DRAW_STATUS_BAR_BACKGROUND}, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=3}
|
+->LinearLayout{id=-1, visibility=VISIBLE, width=1080, height=1794, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@bc95986, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2}
|
+-->ViewStub{id=16908682, res-name=action_mode_bar_stub, visibility=GONE, width=0, height=0, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=true, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@1a62247, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0}
|
+-->FrameLayout{id=-1, visibility=VISIBLE, width=1080, height=1731, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.LinearLayout$LayoutParams@8cdb9d, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=63.0, child-count=1}
|
+--->ActionBarOverlayLayout{id=2131165227, res-name=decor_content_parent, visibility=VISIBLE, width=1080, height=1731, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@78bb9e0, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2}
|
+---->ContentFrameLayout{id=16908290, res-name=content, visibility=VISIBLE, width=1080, height=1584, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.support.v7.widget.ActionBarOverlayLayout$LayoutParams@9bc135e, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=147.0, child-count=1}
|
+----->ConstraintLayout{id=-1, visibility=VISIBLE, width=1080, height=1584, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@c1ce155, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2}
|
+------>AppCompatTextView{id=2131165288, res-name=secondTextView, visibility=VISIBLE, width=721, height=140, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.support.constraint.ConstraintLayout$LayoutParams@1b2076a, tag=null, root-is-layout-requested=false, has-input-connection=false, x=180.0, y=722.0, text=Second Activity, input-type=0, ime-target=false, has-links=false}
|
+------>AppCompatButton{id=2131165307, res-name=testButton, visibility=VISIBLE, width=300, height=126, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=true, is-enabled=true, is-focused=false, is-focusable=true, is-layout-requested=false, is-selected=false, layout-params=android.support.constraint.ConstraintLayout$LayoutParams@d0ba45b, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, text=Test Button, input-type=0, ime-target=false, has-links=false}
|
+---->ActionBarContainer{id=2131165193, res-name=action_bar_container, visibility=VISIBLE, width=1080, height=147, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.support.v7.widget.ActionBarOverlayLayout$LayoutParams@d613036, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2}
|
+----->Toolbar{id=2131165191, res-name=action_bar, visibility=VISIBLE, width=1080, height=147, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@680e60d, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=2}
|
+------>AppCompatTextView{id=-1, visibility=VISIBLE, width=573, height=71, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.support.v7.widget.Toolbar$LayoutParams@60819c2, tag=null, root-is-layout-requested=false, has-input-connection=false, x=42.0, y=38.0, text=EspressoTestingSample, input-type=0, ime-target=false, has-links=false}
|
+------>ActionMenuView{id=-1, visibility=VISIBLE, width=0, height=147, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.support.v7.widget.Toolbar$LayoutParams@75843d3, tag=null, root-is-layout-requested=false, has-input-connection=false, x=1080.0, y=0.0, child-count=0}
|
+----->ActionBarContextView{id=2131165199, res-name=action_context_bar, visibility=GONE, width=0, height=0, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=true, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@d715b10, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0, child-count=0}
|
+->View{id=16908336, res-name=navigationBarBackground, visibility=VISIBLE, width=1080, height=126, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@162d609, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=1794.0}
|
+->View{id=16908335, res-name=statusBarBackground, visibility=VISIBLE, width=1080, height=63, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=android.widget.FrameLayout$LayoutParams@842100e, tag=null, root-is-layout-requested=false, has-input-connection=false, x=0.0, y=0.0}
|
at dalvik.system.VMStack.getThreadStackTrace(Native Method)
at java.lang.Thread.getStackTrace(Thread.java:1538)
at android.support.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:88)
at android.support.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:51)
at android.support.test.espresso.ViewInteraction.waitForAndHandleInteractionResults(ViewInteraction.java:312)
at android.support.test.espresso.ViewInteraction.check(ViewInteraction.java:297)
at com.example.admin1.espressotestingsample.ExampleInstrumentedTest.validateTextView(ExampleInstrumentedTest.java:42)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at android.support.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:527)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at android.support.test.runner.AndroidJUnit4.run(AndroidJUnit4.java:101)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:56)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:384)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2145)

但是当我尝试使用onView(withId(R.id.testButton)).check(matches(isDisplayed()));

时

我很困惑。它适用于Button。但不适用于TextView。 TextView和Button在同一页面中。请帮助我解决问题。

Answer 1

我认为这是您的解决方案

onView(withId(R.id.my_view))        // withId(R.id.my_view) is a ViewMatcher
    .perform(click())               // click() is a ViewAction
    .check(matches(isDisplayed())); // matches(isDisplayed()) is a ViewAssertion

测试中的条件逻辑是不可取的。考虑到这一点，Espresso的API旨在引导测试作者远离它（通过明确显示测试动作和断言）。

话虽如此，您仍然可以通过实现自己的ViewAction并将isDisplayed检查（在perform方法内部）捕获到AtomicBoolean中来实现。

另一个不太优雅的选择-捕获失败的检查引发的异常：

Answer 2

我认为错误并非来自：

onView(withId(R.id.textView1)).check(matches(isDisplayed()));

您发布的错误消息的第一行是：

android.support.test.espresso.NoMatchingViewException: No views in
hierarchy found matching: with text: is "Hello World!"

因此从第二行引发了异常。 TextView是否真的包含“ Hello World”？如果您查看错误消息的“查看层次结构”，似乎并非如此。看起来您的TextView包含文本“第二活动”。

请检查TextView是否确实包含您期望的文本。通常像这样的简单check()应该可以正常工作。

Espresso测试框架Match（isDisplayed（））抛出错误

2 个答案: