add automated android tests

app/build.gradle

@@ -25,6 +25,16 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_1_8
+    }
+
+    testOptions {
+        unitTests {
+            includeAndroidResources = true
+        }
+    }
 }
 
 dependencies {
@@ -39,9 +49,26 @@ dependencies {
     implementation "io.reactivex.rxjava2:rxandroid:2.1.0"
     implementation 'com.jakewharton.rxbinding2:rxbinding:2.2.0'
     implementation 'com.jakewharton.rxbinding2:rxbinding-appcompat-v7:2.2.0'
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
     implementation 'androidx.recyclerview:recyclerview:1.1.0'
     implementation 'com.google.android.material:material:1.0.0'
+
+    androidTestImplementation 'androidx.test:core-ktx:1.2.0'
+    androidTestImplementation 'androidx.test.ext:junit:' + rootProject.extJUnitVersion
+    androidTestImplementation 'androidx.test:runner:' + rootProject.runnerVersion
+    androidTestImplementation 'androidx.test:rules:' + rootProject.rulesVersion
+    androidTestImplementation 'androidx.test.espresso:espresso-core:' + rootProject.espressoVersion
+    androidTestImplementation 'androidx.test.espresso:espresso-intents:' + rootProject.espressoVersion
+    androidTestImplementation 'androidx.test.espresso:espresso-contrib:' + rootProject.espressoVersion
+    androidTestImplementation 'androidx.test.ext:truth:' + rootProject.extTruthVersion
+    androidTestImplementation 'androidx.test.ext:junit:' + rootProject.extJUnitVersion
+    androidTestImplementation 'org.robolectric:annotations:' + rootProject.robolectricVersion
+
+    testImplementation 'androidx.test:core:' + rootProject.coreVersion
+    testImplementation 'androidx.test.ext:junit:' + rootProject.extJUnitVersion
+    testImplementation 'androidx.test.espresso:espresso-core:' + rootProject.espressoVersion
+    testImplementation 'androidx.test.espresso:espresso-intents:' + rootProject.espressoVersion
+    testImplementation 'androidx.test.espresso:espresso-contrib:' + rootProject.espressoVersion
+    testImplementation 'androidx.test.ext:truth:' + rootProject.extTruthVersion
+    testImplementation 'androidx.test.ext:junit:' + rootProject.extJUnitVersion
+    testImplementation 'org.robolectric:robolectric:' + rootProject.robolectricVersion
 }

app/src/androidTest/java/pl/edu/amu/wmi/socialaggregator/AddSocialActivityTest.kt

@@ -0,0 +1,82 @@
+package pl.edu.amu.wmi.socialaggregator
+
+import androidx.recyclerview.widget.RecyclerView
+import androidx.test.core.app.launchActivity
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.action.ViewActions.click
+import androidx.test.espresso.contrib.RecyclerViewActions
+import androidx.test.espresso.intent.rule.IntentsTestRule
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import junit.framework.Assert.assertEquals
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import pl.edu.amu.wmi.socialaggregator.TestUtils.actionOnChild
+import pl.edu.amu.wmi.socialaggregator.TestUtils.cleanLocalStorage
+import pl.edu.amu.wmi.socialaggregator.activity.AddSocialActivity
+
+@RunWith(AndroidJUnit4::class)
+class AddSocialActivityTest {
+
+    @Rule
+    @JvmField
+    val activity = IntentsTestRule(AddSocialActivity::class.java)
+
+
+    @Test
+    fun initialState_noAddedSocials_oneAvailableSocial() {
+        cleanLocalStorage(activity)
+
+        val newActivity = launchActivity<AddSocialActivity>()
+
+        assertEquals(
+            0, activity.activity.findViewById<RecyclerView>(R.id.availableSocialsRecyclerView)
+                .adapter?.itemCount
+        )
+        assertEquals(
+            1, activity.activity.findViewById<RecyclerView>(R.id.addSocialRecyclerView)
+                .adapter?.itemCount
+        )
+    }
+
+    @Test
+    fun clickingSocials_movesThemFormAvailableToAdded_etViceVersa() {
+        cleanLocalStorage(activity)
+
+        onView(withId(R.id.addSocialRecyclerView))
+            .perform(
+                RecyclerViewActions.actionOnItemAtPosition<RecyclerView.ViewHolder>(
+                    0,
+                    actionOnChild(click(), R.id.socialPlatformImage)
+                )
+            )
+
+        assertEquals(
+            1, activity.activity.findViewById<RecyclerView>(R.id.availableSocialsRecyclerView)
+                .adapter?.itemCount
+        )
+        assertEquals(
+            0, activity.activity.findViewById<RecyclerView>(R.id.addSocialRecyclerView)
+                .adapter?.itemCount
+        )
+
+        onView(withId(R.id.availableSocialsRecyclerView))
+            .perform(
+                RecyclerViewActions.actionOnItemAtPosition<RecyclerView.ViewHolder>(
+                    0,
+                    actionOnChild(click(), R.id.socialPlatformImage)
+                )
+            )
+
+        assertEquals(
+            0, activity.activity.findViewById<RecyclerView>(R.id.availableSocialsRecyclerView)
+                .adapter?.itemCount
+        )
+        assertEquals(
+            1, activity.activity.findViewById<RecyclerView>(R.id.addSocialRecyclerView)
+                .adapter?.itemCount
+        )
+    }
+
+}

app/src/androidTest/java/pl/edu/amu/wmi/socialaggregator/ExampleInstrumentedTest.kt

@@ -15,10 +15,12 @@ import org.junit.Assert.*
  */
 @RunWith(AndroidJUnit4::class)
 class ExampleInstrumentedTest {
+
     @Test
     fun useAppContext() {
         // Context of the app under test.
         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        appContext.filesDir.delete()
         assertEquals("pl.edu.amu.wmi.socialaggregator", appContext.packageName)
     }
 }

app/src/androidTest/java/pl/edu/amu/wmi/socialaggregator/MainActivityTest.kt

@@ -0,0 +1,38 @@
+package pl.edu.amu.wmi.socialaggregator
+
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.action.ViewActions.click
+import androidx.test.espresso.intent.Intents.intended
+import androidx.test.espresso.intent.matcher.IntentMatchers.hasComponent
+import androidx.test.espresso.intent.rule.IntentsTestRule
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import pl.edu.amu.wmi.socialaggregator.activity.AddSocialActivity
+import pl.edu.amu.wmi.socialaggregator.activity.MainActivity
+import pl.edu.amu.wmi.socialaggregator.activity.NewPostActivity
+
+@RunWith(AndroidJUnit4::class)
+class MainActivityTest {
+
+    @Rule
+    @JvmField
+    val activity = IntentsTestRule(MainActivity::class.java)
+
+    @Test
+    fun clickAddNewSocial_shouldOpenAddNewSocialActivity() {
+        onView(withId(R.id.connectedSocialsButton)).perform(click())
+
+        intended(hasComponent(AddSocialActivity::class.java.name))
+    }
+
+    @Test
+    fun clickCreatePost_shouldOpenAddNewNewPostActivity() {
+        onView(withId(R.id.createPostButton)).perform(click())
+
+        intended(hasComponent(NewPostActivity::class.java.name))
+    }
+
+}

app/src/androidTest/java/pl/edu/amu/wmi/socialaggregator/NewPostActivityTest.kt

@@ -0,0 +1,73 @@
+package pl.edu.amu.wmi.socialaggregator
+
+import androidx.recyclerview.widget.RecyclerView
+import androidx.test.espresso.Espresso.*
+import androidx.test.espresso.action.ViewActions.click
+import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.contrib.RecyclerViewActions
+import androidx.test.espresso.intent.rule.IntentsTestRule
+import androidx.test.espresso.matcher.ViewMatchers.*
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Assert.assertTrue
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import pl.edu.amu.wmi.socialaggregator.TestUtils.atPosition
+import pl.edu.amu.wmi.socialaggregator.TestUtils.cleanLocalStorage
+import pl.edu.amu.wmi.socialaggregator.TestUtils.getCurrentActivity
+import pl.edu.amu.wmi.socialaggregator.activity.MainActivity
+
+@RunWith(AndroidJUnit4::class)
+class NewPostActivityTest {
+
+    @Rule
+    @JvmField
+    val activity = IntentsTestRule(MainActivity::class.java)
+
+    @Test
+    fun clickPublishPost_shouldEndActivity() {
+        onView(withId(R.id.createPostButton)).perform(click())
+
+        closeSoftKeyboard()
+
+        onView(withId(R.id.publishPost)).perform(click())
+
+        assertTrue(getCurrentActivity()!!::class.java.simpleName == "MainActivity")
+    }
+
+    @Test
+    fun clickPublishPost_shouldIncreasePostCount() {
+        cleanLocalStorage(activity)
+
+        onView(withId(R.id.connectedSocialsButton)).perform(click())
+
+        onView(withId(R.id.addSocialRecyclerView))
+            .perform(
+                RecyclerViewActions.actionOnItemAtPosition<RecyclerView.ViewHolder>(
+                    0,
+                    TestUtils.actionOnChild(click(), R.id.socialPlatformImage)
+                )
+            )
+
+        pressBack()
+
+        onView(withId(R.id.createPostButton)).perform(click())
+
+        closeSoftKeyboard()
+
+        onView(withId(R.id.availableSocials))
+            .perform(
+                RecyclerViewActions.actionOnItemAtPosition<RecyclerView.ViewHolder>(
+                    0,
+                    TestUtils.actionOnChild(click(), R.id.chip)
+                )
+            )
+
+        onView(withId(R.id.publishPost)).perform(click())
+
+        onView(withId(R.id.previousPostsRecyclerView)).check(
+            matches(atPosition(0, hasDescendant(withText("Facebook"))))
+        )
+    }
+
+}

app/src/androidTest/java/pl/edu/amu/wmi/socialaggregator/TestUtils.kt

@@ -0,0 +1,109 @@
+package pl.edu.amu.wmi.socialaggregator
+
+import android.app.Activity
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+import androidx.test.espresso.NoMatchingViewException
+import androidx.test.espresso.UiController
+import androidx.test.espresso.ViewAction
+import androidx.test.espresso.ViewAssertion
+import androidx.test.espresso.intent.rule.IntentsTestRule
+import androidx.test.espresso.matcher.BoundedMatcher
+import androidx.test.espresso.matcher.ViewMatchers
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry.getInstrumentation
+import androidx.test.runner.lifecycle.ActivityLifecycleMonitorRegistry
+import androidx.test.runner.lifecycle.Stage
+import org.hamcrest.CoreMatchers
+import org.hamcrest.Description
+import org.hamcrest.Matcher
+import org.hamcrest.core.AllOf
+import org.junit.runner.RunWith
+import java.io.File
+
+object TestUtils {
+
+    fun cleanLocalStorage(activity: IntentsTestRule<out Activity>) {
+        deleteRecursive(activity.activity.filesDir)
+    }
+
+    private fun deleteRecursive(fileOrDirectory: File) {
+        if (fileOrDirectory.isDirectory())
+            for (child in fileOrDirectory.listFiles())
+                deleteRecursive(child)
+
+        fileOrDirectory.delete()
+    }
+
+    fun actionOnChild(action: ViewAction, childId: Int): ViewAction? {
+        return object : ViewAction {
+            override fun getDescription(): String {
+                return "Action on child"
+            }
+
+            override fun getConstraints(): Matcher<View> {
+                return AllOf.allOf(
+                    ViewMatchers.isDisplayed(),
+                    ViewMatchers.isAssignableFrom(View::class.java)
+                )
+            }
+
+            override fun perform(uiController: UiController?, view: View?) {
+                view?.let {
+                    val child = it.findViewById<View>(childId)
+                    action.perform(uiController, child)
+                }
+            }
+
+        }
+    }
+
+    fun atPosition(position: Int, itemMatcher: Matcher<View>): Matcher<View> {
+        checkNotNull(itemMatcher)
+        return object : BoundedMatcher<View, RecyclerView>(RecyclerView::class.java) {
+            override fun describeTo(description: Description) {
+                description.appendText("has item at position $position: ")
+                itemMatcher.describeTo(description)
+            }
+
+            override fun matchesSafely(view: RecyclerView): Boolean {
+                val viewHolder = view.findViewHolderForAdapterPosition(position)
+                    ?: // has no item on such position
+                    return false
+                return itemMatcher.matches(viewHolder.itemView)
+            }
+        }
+    }
+
+    fun atPosition(position: Int, id: Int, itemMatcher: Matcher<View>): Matcher<View> {
+        checkNotNull(itemMatcher)
+        return object : BoundedMatcher<View, RecyclerView>(RecyclerView::class.java) {
+            override fun describeTo(description: Description) {
+                description.appendText("has item at position $position: ")
+                itemMatcher.describeTo(description)
+            }
+
+            override fun matchesSafely(view: RecyclerView): Boolean {
+                val viewHolder = view.findViewHolderForAdapterPosition(position)
+                    ?: // has no item on such position
+                    return false
+                val view = viewHolder.itemView.findViewById<View>(id)
+                return itemMatcher.matches(view)
+            }
+        }
+    }
+
+    fun getCurrentActivity(): Activity? {
+        var currentActivity: Activity? = null
+        getInstrumentation().runOnMainSync {
+            run {
+                currentActivity =
+                    ActivityLifecycleMonitorRegistry.getInstance().getActivitiesInStage(
+                        Stage.RESUMED
+                    ).elementAtOrNull(0)
+            }
+        }
+        return currentActivity
+    }
+
+}

app/src/main/java/pl/edu/amu/wmi/socialaggregator/socialplatforms/FacebookMock.kt

@@ -17,6 +17,7 @@ class FacebookMock : SocialPlatform {
 
     override fun login(context: Context) {
         val loginsDir = InternalStorage.getFileOrDir(context, "logins")
+        loginsDir?.mkdir()
         if (loginsDir != null) {
             val loginFile = File(loginsDir, "facebook")
             loginFile.createNewFile()

build.gradle

@@ -26,3 +26,18 @@ allprojects {
 task clean(type: Delete) {
     delete rootProject.buildDir
 }
+
+
+
+ext {
+    buildToolsVersion = "28.0.3"
+    androidxLibVersion = "1.0.0"
+    coreVersion = "1.3.0-alpha03"
+    extJUnitVersion = "1.1.2-alpha03"
+    runnerVersion = "1.3.0-alpha03"
+    rulesVersion = "1.3.0-alpha03"
+    espressoVersion = "3.3.0-alpha03"
+    extJUnitVersion = "1.1.2-alpha03"
+    extTruthVersion = "1.3.0-alpha03"
+    robolectricVersion = "4.3.1"
+}

gradle.properties

@@ -19,3 +19,4 @@ android.useAndroidX=true
 android.enableJetifier=true
 # Kotlin code style for this project: "official" or "obsolete":
 kotlin.code.style=official
+android.enableUnitTestBinaryResources=true