Merge pull request #1641 from kiwix/feature/macgills/1593-github-actions

#1593 Move CI from Travis to GitHub Actions - replace travis with actions

.github/workflows/coverage.yml

@@ -0,0 +1,38 @@
+name: Coverage Reporting
+
+on:
+  push:
+    branches:
+      - master
+      - develop
+
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+
+  coverageReport:
+    strategy:
+      matrix:
+        api-level: [21, 29]
+      fail-fast: false
+    runs-on: macOS-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: create instrumentation coverage
+        uses: reactivecircus/android-emulator-runner@v2.0.0
+        with:
+          api-level: ${{ matrix.api-level }}
+          arch: x86_64
+          script: bash instrumentation.sh
+
+      - name: create unit coverage
+        run: ./gradlew jacocoTestDebugUnitTestReport jacocoTestCustomExampleDebugUnitTestReport
+
+      - name: upload coverage
+        run: bash <(curl -s https://codecov.io/bash)

.github/workflows/nightly.yml

@@ -0,0 +1,60 @@
+name: Nightly
+
+on:
+  schedule:
+    # every night at midnight
+    - cron:  '0 0 * * *'
+
+jobs:
+
+  instrumentation_tests:
+    strategy:
+      matrix:
+        api-level: [21, 22, 23, 24, 25, 27, 28, 29]
+      fail-fast: false
+    runs-on: macOS-latest
+    steps:
+
+      - name: checkout
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: run instrumentation tests
+        uses: reactivecircus/android-emulator-runner@v2.0.0
+        with:
+          api-level: ${{ matrix.api-level }}
+          arch: x86_64
+          script: ./gradlew connectedDebugAndroidTest
+
+  unit_test_and_release:
+    needs: instrumentation_tests
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: checkout
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: run unit tests
+        run: ./gradlew testDebugUnitTest testCustomExampleDebugUnitTest
+
+      - name: build debug
+        run: ./gradlew assembleDebug
+
+      - name: Decrypt files
+        env:
+          ssh_key: ${{ secrets.ssh_key }}
+        run: |
+          echo "$ssh_key" | base64 -d > ssh_key
+
+      - name: release debug to kiwix.download.org
+        env:
+          UNIVERSAL_DEBUG_APK: app/build/outputs/apk/debug/*universal*.apk
+          DATE: $(echo $(date +%Y-%m-%d))
+        run: |
+          mkdir $DATE
+          cp $UNIVERSAL_DEBUG_APK $DATE
+          scp -vrp -i ssh_key -o StrictHostKeyChecking=no $DATE ci@download.kiwix.org:/data/download/nightly/
+

.github/workflows/pull_request.yml

@@ -0,0 +1,29 @@
+name: Pull requests
+
+on: [pull_request]
+
+jobs:
+
+  staticAnalysis:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: Static Analysis
+        run: ./gradlew ktlintCheck app:lintDebug core:lintDebug custom:lintCustomexampleDebug
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: Build all configurations
+        run: ./gradlew assemble

.github/workflows/release.yml

@@ -0,0 +1,66 @@
+name: Publish App
+
+on:
+  push:
+    branches-ignore:
+      - '*'
+      - '*/**'
+    tags:
+      - '*'
+      - '*/**'
+
+jobs:
+  publish:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Decrypt files
+        env:
+          keystore: ${{ secrets.keystore }}
+          google_json: ${{ secrets.google_json }}
+          ssh_key: ${{ secrets.ssh_key }}
+        run: |
+          echo "$google_json" | base64 -d > google.json
+          echo "$keystore" | base64 -d > kiwix-android.keystore
+          echo "$ssh_key" | base64 -d > ssh_key
+
+      - name: Publish app to play store
+        env:
+          KEY_ALIAS: ${{ secrets.KEY_ALIAS }}
+          KEY_PASSWORD: ${{ secrets.KEY_PASSWORD }}
+          KEY_STORE_PASSWORD: ${{ secrets.KEY_STORE_PASSWORD }}
+        run: ./gradlew publishReleaseApk
+
+      - name: Publish app to download.kiwix.org
+        env:
+          UNIVERSAL_RELEASE_APK: app/build/outputs/apk/release/*universal*.apk
+          TAG: $(echo ${GITHUB_REF:10})
+          OUTPUT_NAME: kiwix-$TAG.apk
+        run: |
+          cp $UNIVERSAL_RELEASE_APK $OUTPUT_NAME
+          scp -vrp -i ssh_key -o StrictHostKeyChecking=no $OUTPUT_NAME ci@download.kiwix.org:/data/download/release/kiwix-android/
+
+      - name: Create Github Release
+        id: create_release
+        uses: actions/create-release@v1.0.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          draft: true
+          prerelease: true
+      - name: Upload Release Asset
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1.0.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          OUTPUT_DIR: ${{app/build/outputs/apk}}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: $OUTPUT_DIR
+          asset_name: assets.zip
+          asset_content_type: application/vnd.android.package-archive

.travis.yml

@@ -1,101 +0,0 @@
-language: android
-
-jdk: oraclejdk8
-
-sudo: required
-
-dist: trusty
-
-env:
-  global:
-    # switch glibc to a memory conserving mode
-    - MALLOC_ARENA_MAX=2
-    - ANDROID_TARGET=android-19
-    - ANDROID_ABI=armeabi-v7a
-
-if: type != push OR tag IS present
-
-install:
-  - pip install --user 'requests[security]'
-  - wget -r -nH -nd -np -R index.html* robots.txt* http://download.kiwix.org/dev/android/api/licenses/ -e robots=off -P $ANDROID_HOME/licenses || true
-
-before_cache:
-  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
-  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
-
-cache:
-  directories:
-    - "$HOME/.gradle/caches/"
-    - "$HOME/.gradle/wrapper/"
-    - "$HOME/.android/build-cache"
-
-android:
-  components:
-    - build-tools-28.0.3
-    - android-28
-    - extra-android-m2repository
-    - $ANDROID_TARGET
-    - sys-img-${ANDROID_ABI}-${ANDROID_TARGET}
-
-licenses:
-  - ".+"
-
-before_script:
-  - chmod +x gradlew
-  - echo no | android create avd --force -n test -t $ANDROID_TARGET --abi $ANDROID_ABI -c 100M
-  - emulator -avd test -no-audio -no-window &
-  - android-wait-for-emulator
-  - adb shell input keyevent 82 &
-
-script:
-  - ./gradlew jacocoInstrumentationTestReport ktlintCheck app:lintDebug core:lintDebug custom:lintCustomexampleDebug jacocoTestDebugUnitTestReport jacocoTestCustomExampleDebugUnitTestReport app:assembleDebug
-
-after_success:
-  - bash <(curl -s https://codecov.io/bash)
-  - openssl aes-256-cbc -K $encrypted_82adfa9c3806_key -iv $encrypted_82adfa9c3806_iv -in secrets.tar.enc -out secrets.tar -d
-  - tar xvf secrets.tar
-  - ./gradlew app:assembleRelease
-
-before_deploy:
-  #  - export APP_CHANGELOG=$(cat app/src/kiwix/play/release-notes/en-US/default.txt)
-  - export DATE=$(date +%Y-%m-%d)
-  - export OUTPUT_DIR=app/build/outputs/apk
-  - export UNIVERSAL_RELEASE_APK=$OUTPUT_DIR/release/*universal*.apk
-  - export UNIVERSAL_DEBUG_APK=$OUTPUT_DIR/debug/*universal*.apk
-  - export SSH_KEY=travisci_builder_id_key
-  - chmod 600 $SSH_KEY
-
-deploy:
-
-  #publish on github releases
-  - provider: releases
-    api_key: "$GITHUB_TOKEN"
-    file: $OUTPUT_DIR/release/*
-    file_glob: true
-    skip_cleanup: true
-    overwrite: true
-    #body: "$APP_CHANGELOG" broken because travis can't escape newlines https://github.com/travis-ci/dpl/issues/155
-    draft: true
-    on:
-      tags: true
-
-  #publish on play store
-  - provider: script
-    skip_cleanup: true
-    script: ./gradlew publishReleaseApk
-    on:
-      tags: true
-
-  #publish release on download.kiwix.org
-  - provider: script
-    skip_cleanup: true
-    script: mkdir $TRAVIS_TAG && cp $UNIVERSAL_RELEASE_APK $TRAVIS_TAG && scp -vrp -i ${SSH_KEY} -o StrictHostKeyChecking=no $TRAVIS_TAG ci@download.kiwix.org:/data/download/release/kiwix-android/
-    on:
-      tags: true
-
-  #publish debug nightly on download.kiwix.org
-  - provider: script
-    skip_cleanup: true
-    script: mkdir $DATE && cp $UNIVERSAL_DEBUG_APK $DATE && scp -vrp -i ${SSH_KEY} -o StrictHostKeyChecking=no $DATE ci@download.kiwix.org:/data/download/nightly/
-    on:
-      branch: develop

app/src/androidTest/java/DebugFunctions.kt

@@ -23,6 +23,7 @@ import android.widget.TextView
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.runner.lifecycle.ActivityLifecycleMonitorRegistry
 import androidx.test.runner.lifecycle.Stage.RESUMED
+import androidx.viewpager.widget.ViewPager
 import org.kiwix.kiwixmobile.BaseRobot
 import java.io.File
 
@@ -54,6 +55,13 @@ fun combineMessages(
 fun getViewHierarchy(v: View) =
   StringBuilder().apply { getViewHierarchy(v, this, 0) }.toString()
 
+fun attempt(count: Int, function: () -> Unit): Unit = try {
+  function.invoke()
+} catch (e: Exception) {
+  if (count - 1 == 0) throw e
+  else attempt(count - 1, function)
+}
+
 private fun getViewHierarchy(v: View, desc: StringBuilder, margin: Int) {
   desc.append(getViewMessage(v, margin))
   if (v is ViewGroup) {
@@ -65,7 +73,9 @@ private fun getViewHierarchy(v: View, desc: StringBuilder, margin: Int) {
 
 private fun getViewMessage(v: View, marginOffset: Int) =
   "${numSpaces(marginOffset)}[${v.javaClass.simpleName}]${resourceId(v)}${text(v)}" +
-    "${contentDescription(v)}${visibility(v)}\n"
+    "${contentDescription(v)}${visibility(v)}${page(v)}\n"
+
+fun page(v: View) = if (v is ViewPager) " page: ${v.currentItem}" else ""
 
 fun visibility(v: View) = " visibility:" +
   when (v.visibility) {

app/src/androidTest/java/org/kiwix/kiwixmobile/BaseRobot.kt

@@ -30,7 +30,9 @@ import org.kiwix.kiwixmobile.Findable.StringId.ContentDesc
 import org.kiwix.kiwixmobile.Findable.Text
 import org.kiwix.kiwixmobile.Findable.ViewId
 
-const val WAIT_TIMEOUT_MS = 10000L
+const val DEFAULT_WAIT = 10_000L
+const val LONG_WAIT = 20_000L
+const val VERY_LONG_WAIT = 40_000L
 
 abstract class BaseRobot(
   private val instrumentation: Instrumentation = InstrumentationRegistry.getInstrumentation(),
@@ -50,7 +52,7 @@ abstract class BaseRobot(
     uiDevice.pressBack()
   }
 
-  protected fun isVisible(findable: Findable, timeout: Long = WAIT_TIMEOUT_MS) =
+  protected fun isVisible(findable: Findable, timeout: Long = DEFAULT_WAIT) =
     waitFor(findable, timeout) ?: throw RuntimeException(findable.errorMessage(this))
 
   protected fun UiObject2.swipeLeft() {
@@ -61,7 +63,7 @@ abstract class BaseRobot(
     customSwipe(Direction.RIGHT)
   }
 
-  protected fun clickOn(findable: Findable, timeout: Long = WAIT_TIMEOUT_MS) {
+  protected fun clickOn(findable: Findable, timeout: Long = DEFAULT_WAIT) {
     isVisible(findable, timeout).click()
   }
 
@@ -70,7 +72,7 @@ abstract class BaseRobot(
   }
 
   protected fun clickOnTab(textId: Int) {
-    clickOn(ContentDesc(textId))
+    clickOn(ContentDesc(textId), LONG_WAIT)
   }
 
   protected fun waitFor(milliseconds: Long) {
@@ -79,14 +81,14 @@ abstract class BaseRobot(
 
   private fun waitFor(
     findable: Findable,
-    timeout: Long = WAIT_TIMEOUT_MS
+    timeout: Long = DEFAULT_WAIT
   ): UiObject2? =
     uiDevice.wait(Until.findObject(findable.selector(this)), timeout)
 
   private fun UiObject2.customSwipe(
     direction: Direction,
-    fl: Float = 1.0f
+    percent: Float = 0.8f
   ) {
-    swipe(direction, fl)
+    swipe(direction, percent)
   }
 }

app/src/androidTest/java/org/kiwix/kiwixmobile/KiwixMockServer.kt

@@ -25,7 +25,6 @@ import okhttp3.mockwebserver.RecordedRequest
 import org.kiwix.sharedFunctions.TEST_PORT
 import org.simpleframework.xml.core.Persister
 import java.io.StringWriter
-import java.util.Stack
 
 class KiwixMockServer {
 
@@ -63,10 +62,6 @@ class KiwixMockServer {
     forcedResponse = mockResponse
   }
 
-  private fun <E> Stack<E>.popOrNull() =
-    if (empty()) null
-    else pop()
-
   private fun Any.asXmlString() = StringWriter().let {
     Persister().write(this, it)
     "$it"

app/src/androidTest/java/org/kiwix/kiwixmobile/intro/IntroActivityTest.kt

@@ -31,7 +31,6 @@ class IntroActivityTest : BaseActivityTest<IntroActivity>() {
   fun viewIsSwipeableAndNavigatesToMain() {
     intro {
       swipeLeft()
-      swipeRight()
     } clickGetStarted { }
   }
 }

app/src/androidTest/java/org/kiwix/kiwixmobile/intro/IntroRobot.kt

@@ -18,14 +18,17 @@
 
 package org.kiwix.kiwixmobile.intro
 
+import applyWithViewHierarchyPrinting
+import attempt
 import org.kiwix.kiwixmobile.BaseRobot
 import org.kiwix.kiwixmobile.Findable.StringId.TextId
 import org.kiwix.kiwixmobile.Findable.ViewId
+import org.kiwix.kiwixmobile.LONG_WAIT
 import org.kiwix.kiwixmobile.R
 import org.kiwix.kiwixmobile.main.MainRobot
 import org.kiwix.kiwixmobile.main.main
 
-fun intro(func: IntroRobot.() -> Unit) = IntroRobot().apply(func)
+fun intro(func: IntroRobot.() -> Unit) = IntroRobot().applyWithViewHierarchyPrinting(func)
 
 class IntroRobot : BaseRobot() {
 
@@ -33,19 +36,17 @@ class IntroRobot : BaseRobot() {
   private val viewPager = ViewId(R.id.view_pager)
 
   init {
-    isVisible(getStarted)
+    isVisible(getStarted, LONG_WAIT)
+    isVisible(TextId(R.string.welcome_to_the_family))
+    isVisible(TextId(R.string.human_kind_knowledge))
   }
 
   fun swipeLeft() {
-    isVisible(viewPager).swipeLeft()
-    isVisible(TextId(R.string.save_books_offline))
-    isVisible(TextId(R.string.download_books_message))
-  }
-
-  fun swipeRight() {
-    isVisible(viewPager).swipeRight()
-    isVisible(TextId(R.string.welcome_to_the_family))
-    isVisible(TextId(R.string.human_kind_knowledge))
+    attempt(10) {
+      isVisible(viewPager).swipeLeft()
+      isVisible(TextId(R.string.save_books_offline))
+      isVisible(TextId(R.string.download_books_message))
+    }
   }
 
   infix fun clickGetStarted(func: MainRobot.() -> Unit): MainRobot {

app/src/androidTest/java/org/kiwix/kiwixmobile/main/MainActivityTest.java

@@ -25,7 +25,6 @@ import androidx.test.rule.ActivityTestRule;
 import androidx.test.rule.GrantPermissionRule;
 import com.schibsted.spain.barista.interaction.BaristaMenuClickInteractions;
 import com.schibsted.spain.barista.interaction.BaristaSleepInteractions;
-import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -56,8 +55,6 @@ public class MainActivityTest {
   }
 
   @Test
-  @Ignore("This is hanging on travis")
-  //TODO fix as part of https://github.com/kiwix/kiwix-android/issues/1428
   public void navigateSettings() {
     BaristaSleepInteractions.sleep(TEST_PAUSE_MS);
     enterSettings();

app/src/androidTest/java/org/kiwix/kiwixmobile/settings/KiwixSettingsActivityTest.java

@@ -20,7 +20,7 @@ package org.kiwix.kiwixmobile.settings;
 
 import android.preference.Preference;
 import androidx.test.rule.ActivityTestRule;
-import org.junit.Ignore;
+import org.jetbrains.annotations.NotNull;
 import org.junit.Rule;
 import org.junit.Test;
 import org.kiwix.kiwixmobile.core.R;
@@ -35,7 +35,6 @@ import static org.hamcrest.Matchers.instanceOf;
 import static org.hamcrest.Matchers.is;
 import static org.kiwix.kiwixmobile.utils.StandardActions.enterSettings;
 
-@Ignore("This is hanging the build") //TODO convert to Kotlin/PageObject
 public class KiwixSettingsActivityTest {
   @Rule
   public ActivityTestRule<KiwixMainActivity> activityTestRule =
@@ -44,15 +43,6 @@ public class KiwixSettingsActivityTest {
   @Test
   public void testToggle() {
     enterSettings();
-    onData(allOf(
-      is(instanceOf(Preference.class)),
-      withKey("pref_nightmode")))
-      .perform(click());
-
-    onData(allOf(
-      is(instanceOf(Preference.class)),
-      withKey("pref_auto_nightmode")))
-      .perform(click());
 
     onData(allOf(
       is(instanceOf(Preference.class)),
@@ -138,5 +128,24 @@ public class KiwixSettingsActivityTest {
 
     assertDisplayed(R.string.clear_all_history_dialog_title);
   }
+
+  @Test
+  public void testNightModeDialog() {
+    enterSettings();
+    onData(allOf(
+      is(instanceOf(Preference.class)),
+      withKey("pref_night_mode")))
+      .perform(click());
+
+    for (String nightModeString : nightModeStrings()) {
+      assertDisplayed(nightModeString);
+    }
+  }
+
+  @NotNull private String[] nightModeStrings() {
+    return activityTestRule.getActivity()
+      .getResources()
+      .getStringArray(R.array.pref_night_modes_entries);
+  }
 }
 

app/src/androidTest/java/org/kiwix/kiwixmobile/zim_manager/ZimManageActivityTest.kt

@@ -20,6 +20,7 @@ package org.kiwix.kiwixmobile.zim_manager
 
 import android.os.Build
 import androidx.test.filters.SdkSuppress
+import attempt
 import okhttp3.mockwebserver.MockResponse
 import org.junit.Test
 import org.kiwix.kiwixmobile.BaseActivityTest
@@ -59,8 +60,11 @@ class ZimManageActivityTest : BaseActivityTest<ZimManageActivity>() {
         searchFor(book)
         pressBack()
         pressBack()
-        forceResponse("0123456789")
-        clickOn(book)
+        forceResponse("012345678901234567890123456789012345678901234567890123456789012345678")
+        attempt(10) {
+          clickOn(book)
+          waitForEmptyView()
+        }
       }
       clickOnDownloading {
         clickStop()
@@ -94,9 +98,7 @@ class ZimManageActivityTest : BaseActivityTest<ZimManageActivity>() {
     mockServer.forceResponse(
       MockResponse()
         .setBody(body)
-        .throttleBody(
-          1L, 1L, SECONDS
-        )
+        .throttleBody(1L, 1L, SECONDS)
     )
   }
 

app/src/androidTest/java/org/kiwix/kiwixmobile/zim_manager/ZimManageRobot.kt

@@ -22,7 +22,9 @@ import org.kiwix.kiwixmobile.BaseRobot
 import org.kiwix.kiwixmobile.Findable.StringId.TextId
 import org.kiwix.kiwixmobile.Findable.Text
 import org.kiwix.kiwixmobile.Findable.ViewId
+import org.kiwix.kiwixmobile.LONG_WAIT
 import org.kiwix.kiwixmobile.R
+import org.kiwix.kiwixmobile.VERY_LONG_WAIT
 import org.kiwix.kiwixmobile.core.entity.LibraryNetworkEntity.Book
 import org.kiwix.kiwixmobile.language.LanguageRobot
 import org.kiwix.kiwixmobile.language.language
@@ -32,7 +34,7 @@ fun zimManage(func: ZimManageRobot.() -> Unit) =
 
 class ZimManageRobot : BaseRobot() {
   init {
-    isVisible(ViewId(R.id.manageViewPager))
+    isVisible(ViewId(R.id.manageViewPager), VERY_LONG_WAIT)
   }
 
   fun clickOnOnline(func: LibraryRobot.() -> Unit): LibraryRobot {
@@ -67,7 +69,7 @@ class ZimManageRobot : BaseRobot() {
     }
 
     fun clickOnSearch() {
-      clickOn(ViewId(R.id.action_search))
+      clickOn(ViewId(R.id.action_search), LONG_WAIT)
     }
 
     fun searchFor(book: Book) {
@@ -75,18 +77,18 @@ class ZimManageRobot : BaseRobot() {
     }
 
     fun waitForEmptyView() {
-      isVisible(ViewId(R.id.libraryErrorText))
+      isVisible(ViewId(R.id.libraryErrorText), VERY_LONG_WAIT)
     }
   }
 
   private fun download(func: DownloadRobot.() -> Unit) = DownloadRobot().apply(func)
   inner class DownloadRobot : BaseRobot() {
     init {
-      isVisible(ViewId(R.id.zim_download_root), 20000L)
+      isVisible(ViewId(R.id.zim_download_root))
     }
 
     fun clickStop() {
-      clickOn(ViewId(R.id.stop))
+      clickOn(ViewId(R.id.stop), LONG_WAIT)
     }
 
     fun waitForEmptyView() {

buildSrc/src/main/kotlin/Versions.kt

@@ -83,7 +83,7 @@ object Versions {
 
   const val fragment_ktx: String = "1.1.0"
 
-  const val orchestrator: String = "1.1.0" // available: "1.2.0"
+  const val orchestrator: String = "1.2.0"
 
   const val lint_gradle: String = "26.5.2"
 

core/src/main/java/org/kiwix/kiwixmobile/core/utils/SharedPreferenceUtil.java

@@ -26,6 +26,7 @@ import androidx.appcompat.app.AppCompatDelegate;
 import androidx.core.content.ContextCompat;
 import io.reactivex.Flowable;
 import io.reactivex.processors.PublishProcessor;
+import java.io.File;
 import java.util.HashSet;
 import java.util.Set;
 import javax.inject.Inject;
@@ -110,8 +111,10 @@ public class SharedPreferenceUtil {
   public String getPrefStorage() {
     String storage = sharedPreferences.getString(PREF_STORAGE, null);
     if (storage == null) {
-      storage =
-        ContextCompat.getExternalFilesDirs(CoreApp.getInstance(), null)[0].getPath();
+      final File externalFilesDir =
+        ContextCompat.getExternalFilesDirs(CoreApp.getInstance(), null)[0];
+      storage = externalFilesDir != null ? externalFilesDir.getPath()
+        : CoreApp.getInstance().getFilesDir().getPath(); // workaround for emulators
       putPrefStorage(storage);
     }
     return storage;

instrumentation.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+adb logcat -c
+adb logcat *:E -v color &
+./gradlew jacocoInstrumentationTestReport