Wednesday, 19 December 2018

uses-library com.android.nfc_extras breaks AndroidTest for api 26 and above when testing on a real device

I've suddenly figured out that this declaration:

    <uses-library
        android:name="com.android.nfc_extras"
        android:required="false"/>

inside <application> scope of my AndroidManifest.xml makes instrumentation tests to fail:

java.lang.NoSuchMethodError: No static method allOf(Lorg/hamcrest/Matcher;Lorg/hamcrest/Matcher;)Lorg/hamcrest/Matcher; in class Lorg/hamcrest/core/AllOf; or its super classes (declaration of 'org.hamcrest.core.AllOf' appears in /system/framework/com.android.nfc_extras.jar)
at org.hamcrest.Matchers.allOf(Matchers.java:33)
at android.support.test.espresso.Espresso.<clinit>(Espresso.java:187)
at android.support.test.espresso.Espresso.onView(Espresso.java:75)
at com.example.abusik.espressotest.InstrumentedTest.changeText_sameActivity(InstrumentedTest.kt:34)
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)

What I came up with for now:

  • Created a demo repository for you to be able to reproduce the problem quickly;
  • Only a real devices with API >= 26 are affected (e.g. Samsung SM-G935F, Huawei P20 lite);
  • Test passes on emulators with any API I have tried;
  • Test passes on real devices with API < 26;
  • Looks like missing class (and all his static methods) are included into AndroidTest apk, but at runtime Android tries to get this class from com.android.nfc_extras.jar???;
  • This behaviour may depend on NFC-feature of your phone;
  • It doesn't looks like MultiDex or obfuscation problem for me - the demo repository is not obfuscated and single-dex.

Apk analyze screenshot


I would like to know if anybody faced this problem, why is this happening and how can I keep my AndroidTests working and still use this library?


My InstrumentedTest.kt file:

package com.example.abusik.espressotest

import android.support.test.espresso.Espresso.onView
import android.support.test.espresso.action.ViewActions.*
import android.support.test.espresso.assertion.ViewAssertions.matches
import android.support.test.espresso.matcher.ViewMatchers.withId
import android.support.test.espresso.matcher.ViewMatchers.withText
import android.support.test.filters.LargeTest
import android.support.test.rule.ActivityTestRule
import android.support.test.runner.AndroidJUnit4
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith

@RunWith(AndroidJUnit4::class)
@LargeTest
class InstrumentedTest {

    private lateinit var stringToBetyped: String

    @get:Rule
    var activityRule: ActivityTestRule<MainActivity> = ActivityTestRule(MainActivity::class.java)

    @Before
    fun initValidString() {
        // Specify a valid string.
        stringToBetyped = "Espresso"
    }

    @Test
    fun changeText_sameActivity() {
        // Type text and then press the button.
        onView(withId(R.id.et)) //EXCEPTION THROWN HERE
            .perform(typeText(stringToBetyped), closeSoftKeyboard())
        onView(withId(R.id.btn)).perform(click())

        // Check that the text was changed.
        onView(withId(R.id.et))
            .check(matches(withText(stringToBetyped)))
    }
}


Test log:

Testing started at 0:09 ...

12/17 00:09:32: Launching InstrumentedTest
$ adb push /Users/a.busik/EspressoTest/app/build/outputs/apk/debug/app-debug.apk /data/local/tmp/com.example.abusik.espressotest
$ adb shell pm install -t -r "/data/local/tmp/com.example.abusik.espressotest"
Success
APK installed in 3 s 235 ms
$ adb push /Users/a.busik/EspressoTest/app/build/outputs/apk/androidTest/debug/app-debug-androidTest.apk /data/local/tmp/com.example.abusik.espressotest.test
$ adb shell pm install -t -r "/data/local/tmp/com.example.abusik.espressotest.test"
Success
APK installed in 2 s 684 ms
Running tests

$ adb shell am instrument -w -r   -e debug false -e class 'com.example.abusik.espressotest.InstrumentedTest' com.example.abusik.espressotest.test/android.support.test.runner.AndroidJUnitRunner
Client not ready yet..
Started running tests

java.lang.NoSuchMethodError: No static method allOf(Lorg/hamcrest/Matcher;Lorg/hamcrest/Matcher;)Lorg/hamcrest/Matcher; in class Lorg/hamcrest/core/AllOf; or its super classes (declaration of 'org.hamcrest.core.AllOf' appears in /system/framework/com.android.nfc_extras.jar)
at org.hamcrest.Matchers.allOf(Matchers.java:33)
at android.support.test.espresso.Espresso.<clinit>(Espresso.java:187)
at android.support.test.espresso.Espresso.onView(Espresso.java:75)
at com.example.abusik.espressotest.InstrumentedTest.changeText_sameActivity(InstrumentedTest.kt:34)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at android.support.test.internal.runner.junit4.statement.RunBefores.evaluate(RunBefores.java:80)
at android.support.test.rule.ActivityTestRule$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:68)
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.-wrap0(Unknown Source:0)
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:126)
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.-wrap0(Unknown Source:0)
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:2106)

Tests ran to completion.



from uses-library com.android.nfc_extras breaks AndroidTest for api 26 and above when testing on a real device

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