ChangeTextBehaviorTest fails

Hello,
I am running ChangeTextBehaviorTest on an emulator and a real device, but it fails with:

> java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.test.uiautomator.UiObject2.setText(java.lang.String)' on a null object reference
> at com.example.android.testing.uiautomator.BasicSample.ChangeTextBehaviorTest.testChangeText_newActivity(ChangeTextBehaviorTest.java:104)
> 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 org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> 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 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$2.evaluate(ParentRunner.java:268)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
> at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:54)
> at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:240)
> at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1879)

Please advise,
Igor

Start with ChangeTextBehaviorTest.java, especially line 104, and run ChangeTextBehaviorTest on the emulator or device to reproduce the null UiObject2 failure. Trace which UI object lookup returns null and confirm the test completes and verifies the text change without the NullPointerException.

Written by the indexing model from the issue text.