I have a problem in espresso test, I don't know why matching the text is always fail with me, I even tried to create simple app has two activities, the first activity has textview and two buttons one button show toast another go next activity, during the recording when add assertion to the text and the code generated correctly I run the test it always fails showing this error:
android.support.test.espresso.NoMatchingViewException: No views in hierarchy found matching: (with id: com.example.admin.testtest2demoo:id/textView and with text: is "Rooh" and Child at position 0 in parent Child at position 0 in parent with id: android:id/content and is displayed on the screen to the user)
here the test code :
package com.example.admin.testtest2demoo;
@LargeTest
@RunWith(AndroidJUnit4.class)
public class MainActivityTest {
@Rule
public ActivityTestRule<MainActivity> mActivityTestRule = new ActivityTestRule<>(MainActivity.class);
@Test
public void mainActivityTest() {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
///when click on this button show toast
ViewInteraction appCompatButton = onView(
allOf(withId(R.id.button2), withText("show SomeThing"),
childAtPosition(
childAtPosition(
withId(android.R.id.content),
0),
2),
isDisplayed()));
appCompatButton.perform(click());
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
///when click on this button show toast
ViewInteraction appCompatButton2 = onView(
allOf(withId(R.id.button2), withText("show SomeThing"),
childAtPosition(
childAtPosition(
withId(android.R.id.content),
0),
2),
isDisplayed()));
appCompatButton2.perform(click());
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
///check the text in first activity (is it Rooh)
ViewInteraction textView = onView(
allOf(withId(R.id.textView), withText("Rooh"),
childAtPosition(
childAtPosition(
withId(android.R.id.content),
0),
0),
isDisplayed()));
textView.check(matches(withText("Rooh")));
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
///when click on this button go to next activity
ViewInteraction appCompatButton3 = onView(
allOf(withId(R.id.button), withText("Go Next"),
childAtPosition(
childAtPosition(
withId(android.R.id.content),
0),
0),
isDisplayed()));
appCompatButton3.perform(click());
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
///check the text in second activity (is it Hello World!)
ViewInteraction textView2 = onView(
allOf(withId(R.id.tv1), withText("Hello World!"),
childAtPosition(
allOf(withId(R.id.background),
childAtPosition(
withId(R.id.swipe_refresh_layout),
0)),
0),
isDisplayed()));
textView2.check(matches(withText("Hello World!")));
}
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));
}
};
}
}
And this the layout of first activity :
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/button2"
android:onClick="goNext"
android:text="Go Next"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/button2"
app:layout_constraintVertical_bias="0.183" />
<TextView
android:id="@+id/textView"
android:layout_width="97dp"
android:layout_height="27dp"
android:layout_marginTop="80dp"
android:gravity="center"
android:text="Rooh"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.501"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView"
android:layout_marginTop="64dp"
android:onClick="showSomeThing"
android:text="show SomeThing"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.502"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView" />
</android.support.constraint.ConstraintLayout>
And the second activity has only one textview, and also its fails if I add assertion on it.
if I comment the text assertions the test will pass, but if text assertion is there it always fails, I also include sleep after each step (I know its nothing to do with it but just in case), I can not understand the code is generated by the recording and the text is displayed correctly but it says No views in hierarchy found matching!!
what I am doing wrong?! thanks in advance
The below code looks totally wrong:
ViewInteraction textView = onView(
allOf(withId(R.id.textView), withText("Rooh"),
childAtPosition(
childAtPosition(
withId(android.R.id.content),
0),
0),
isDisplayed()));
textView.check(matches(withText("Rooh")));
Based on your layout there is only one TextView component which doesn't have any children. So, childAtPosition() can't be applied to it.
textView.check(matches(withText("Rooh"))); is redundant as you already do this when you declare textView.
You can modify your code to the following one which should work:
ViewInteraction textView = onView(allOf(withId(R.id.textView), withText("Rooh")));
textView.check(matches(isDisplayed()));
More about matching the text you can find here.