i have issue using junit4 @beforeclass annotation in instrumented android unit test (i'm using espresso gui testing library). add test @beforeclass annotation, android studio 1.5.1 not run tests @ instead prints "empty test suite". i'm not using test suite. searched site , web couldn't find solution. thought might problem code, called within @beforeclass method fails (tdd), error occurs when code, working in normal test cases, put in @beforeclass annotated method.
thank you.
update: after checking logcat output, 1 commenter suggested, seems problem problem no activity started: no activities found. did forget launch activity calling getactivity() or startactivitysync or similar?
how should this? can't use activitytestrule field, @beforeclass annotated method static.
maybe i'm using @beforeclass annotation in wrong way. impression can use annotation execute tests before other tests in test class. looking replacement testng annotation "dependsonmethods" here. maybe i'm better off using @fixmethodorder(methodsorters.name_ascending) annotation on test class , renaming first test case aaa_my_testcase.
could please comment on that? thanks.
rephrased title of question.
import android.support.test.rule.activitytestrule; import android.support.test.runner.androidjunit4; import org.junit.beforeclass; import org.junit.fixmethodorder; import org.junit.rule; import org.junit.test; import org.junit.runner.runwith; import org.junit.runners.methodsorters; import static android.support.test.espresso.espresso.onview; import static android.support.test.espresso.espresso.pressback; import static android.support.test.espresso.action.viewactions.click; import static android.support.test.espresso.assertion.viewassertions.matches; import static android.support.test.espresso.matcher.viewmatchers.isdisplayed; import static android.support.test.espresso.matcher.viewmatchers.isenabled; import static android.support.test.espresso.matcher.viewmatchers.withcontentdescription; import static android.support.test.espresso.matcher.viewmatchers.withid; import static android.support.test.espresso.matcher.viewmatchers.withtext; import static org.hamcrest.corematchers.allof; import static org.hamcrest.corematchers.not; @runwith(androidjunit4.class) public class mainactivitytest { @rule public activitytestrule<mainactivity> menuactivitytestrule = new activitytestrule<>(mainactivity.class); private static void checksignbrowserisdisplayed() { onview(withtext(r.string.sign_browser)).check(matches(isdisplayed())); } @beforeclass public static void checksignbrowserisdisplayedonappstartup() { checksignbrowserisdisplayed(); } build.app:
apply plugin: 'com.android.application' android { compilesdkversion 23 buildtoolsversion "23.0.2" defaultconfig { applicationid "foo" minsdkversion 15 targetsdkversion 23 versioncode 1 versionname "1.0" testinstrumentationrunner "android.support.test.runner.androidjunitrunner" } buildtypes { release { minifyenabled false proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro' } debug { debuggable true } } testoptions { unittests.returndefaultvalues = true } } dependencies { testcompile 'org.mockito:mockito-core:1.10.19' testcompile 'junit:junit:4.12' androidtestcompile 'junit:junit:4.12' androidtestcompile 'com.android.support:support-annotations:23.1.1' androidtestcompile 'com.android.support.test:runner:0.4.1' androidtestcompile 'com.android.support.test:rules:0.4.1' androidtestcompile 'org.hamcrest:hamcrest-library:1.3' androidtestcompile 'com.android.support.test.espresso:espresso-core:2.2.1' // required if want use mockito android instrumentation tests - not needed now. // androidtestcompile 'org.mockito:mockito-core:1.+' // androidtestcompile "com.google.dexmaker:dexmaker:1.2" // androidtestcompile "com.google.dexmaker:dexmaker-mockito:1.2" compile filetree(include: ['*.jar'], dir: 'libs') compile 'org.apache.commons:commons-lang3:3.4' compile 'com.android.support:appcompat-v7:23.1.1' compile 'com.android.support:design:23.1.1' } test output:
running tests
test running startedfinish
empty test suite.
logcat output:
01-25 10:22:42.746 22098-22118/foo i/testrunner: run started: 5 tests 01-25 10:22:42.764 22098-22118/foo d/inputmanagereventinjectionstrategy: creating injection strategy input manager. 01-25 10:22:42.890 22098-22118/foo i/testrunner: failed: foo.mainactivitytest 01-25 10:22:42.890 22098-22118/foo i/testrunner: ----- begin exception ----- 01-25 10:22:42.891 22098-22118/foo i/testrunner: java.lang.runtimeexception: no activities found. did forget launch activity calling getactivity() or startactivitysync or similar? @ android.support.test.espresso.base.rootviewpicker.waitforatleastoneactivitytoberesumed(rootviewpicker.java:189) @ android.support.test.espresso.base.rootviewpicker.findroot(rootviewpicker.java:134) @ android.support.test.espresso.base.rootviewpicker.get(rootviewpicker.java:80) @ android.support.test.espresso.viewinteractionmodule.providerootview(viewinteractionmodule.java:69) @ android.support.test.espresso.viewinteractionmodule_providerootviewfactory.get(viewinteractionmodule_providerootviewfactory.java:23) @ android.support.test.espresso.viewinteractionmodule_providerootviewfactory.get(viewinteractionmodule_providerootviewfactory.java:9) @ android.support.test.espresso.base.viewfinderimpl.getview(viewfinderimpl.java:68) @ android.support.test.espresso.viewinteraction$2.run(viewinteraction.java:166) @ java.util.concurrent.executors$runnableadapter.call(executors.java:422) @ java.util.concurrent.futuretask.run(futuretask.java:237) @ android.os.handler.handlecallback(handler.java:739) @ android.os.handler.dispatchmessage(handler.java:95) @ android.os.looper.loop(looper.java:135) @ android.app.activitythread.main(activitythread.java:5312) @ java.lang.reflect.method.invoke(native method) @ java.lang.reflect.method.invoke(method.java:372) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:901) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:696) 01-25 10:22:42.891 22098-22118/foo i/testrunner: ----- end exception ----- 01-25 10:22:42.891 22098-22118/foo i/testrunner: failed: test mechanism 01-25 10:22:42.892 22098-22118/foo i/testrunner: ----- begin exception ----- 01-25 10:22:42.892 22098-22118/foo i/testrunner: java.lang.nullpointerexception: attempt invoke virtual method 'void android.os.bundle.putstring(java.lang.string, java.lang.string)' on null object reference @ android.support.test.internal.runner.listener.instrumentationresultprinter.reportfailure(instrumentationresultprinter.java:183) @ android.support.test.internal.runner.listener.instrumentationresultprinter.testfailure(instrumentationresultprinter.java:173) @ org.junit.runner.notification.synchronizedrunlistener.testfailure(synchronizedrunlistener.java:63) @ org.junit.runner.notification.runnotifier$4.notifylistener(runnotifier.java:142) @ org.junit.runner.notification.runnotifier$safenotifier.run(runnotifier.java:72) @ org.junit.runner.notification.runnotifier.firetestfailures(runnotifier.java:138) @ org.junit.runner.notification.runnotifier.firetestfailure(runnotifier.java:132) @ org.junit.internal.runners.model.eachtestnotifier.addfailure(eachtestnotifier.java:23) @ org.junit.runners.parentrunner.run(parentrunner.java:369) @ org.junit.runners.suite.runchild(suite.java:128) @ org.junit.runners.suite.runchild(suite.java:27) @ org.junit.runners.parentrunner$3.run(parentrunner.java:290) @ org.junit.runners.parentrunner$1.schedule(parentrunner.java:71) @ org.junit.runners.parentrunner.runchildren(parentrunner.java:288) @ org.junit.runners.parentrunner.access$000(parentrunner.java:58) @ org.junit.runners.parentrunner$2.evaluate(parentrunner.java:268) @ org.junit.runners.parentrunner.run(parentrunner.java:363) @ org.junit.runner.junitcore.run(junitcore.java:137) @ org.junit.runner.junitcore.run(junitcore.java:115) @ android.support.test.internal.runner.testexecutor.execute(testexecutor.java:54) @ android.support.test.runner.androidjunitrunner.onstart(androidjunitrunner.java:240) @ android.app.instrumentation$instrumentationthread.run(instrumentation.java:1928)
i had same issue , because of rule, can set activity launch in rule's constructor:
@rule public activitytestrule<mainactivity> menuactivitytestrule = new activitytestrule<>(mainactivity.class, true, true); last argument responsible launching activity.
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