First test working and the first activity created

app/build.gradle

@@ -21,14 +21,25 @@ android {
         }
     }
 
+    //https://developer.android.com/training/testing/set-up-project
+//    useLibrary 'android.test.runner'
+//    useLibrary 'android.test.base'
+//    useLibrary 'android.test.mock'
+
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation 'com.android.support:appcompat-v7:28.0.0-rc02'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.android.support:design:28.0.0-rc02'
     testImplementation 'junit:junit:4.12'
 
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test:rules:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-contrib:3.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-intents:3.0.2'
+
 }

app/src/androidTest/java/cz/josefadamcik/activityjournal/MainActivityTest.kt

@@ -0,0 +1,30 @@
+package cz.josefadamcik.activityjournal
+
+import android.support.test.espresso.Espresso.onView
+import android.support.test.espresso.assertion.ViewAssertions.matches
+
+import android.support.test.espresso.matcher.ViewMatchers.*
+import android.support.test.filters.LargeTest
+import android.support.test.rule.ActivityTestRule
+import android.support.test.runner.AndroidJUnit4
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+
+@RunWith(AndroidJUnit4::class)
+@LargeTest
+class MainActivityTest {
+    @Rule
+    @JvmField
+    var activityRule: ActivityTestRule<MainActivity> = ActivityTestRule(MainActivity::class.java)
+
+    @Test
+    fun applicationStart_activityDisplays() {
+        onView(withId(R.id.fab))
+                .check(matches(isDisplayed()))
+        onView(withId(R.id.toolbar))
+                .check(matches(isDisplayed()))
+    }
+
+}

app/src/main/AndroidManifest.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <manifest package="cz.josefadamcik.activityjournal"
           xmlns:android="http://schemas.android.com/apk/res/android">
 
@@ -7,5 +8,17 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme"/>
-</manifest>
+        android:theme="@style/AppTheme">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/title_activity_main"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/cz/josefadamcik/activityjournal/MainActivity.kt

@@ -0,0 +1,22 @@
+package cz.josefadamcik.activityjournal
+
+import android.os.Bundle
+import android.support.design.widget.Snackbar
+import android.support.v7.app.AppCompatActivity;
+
+import kotlinx.android.synthetic.main.activity_main.*
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        setSupportActionBar(toolbar)
+
+        fab.setOnClickListener { view ->
+            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+                    .setAction("Action", null).show()
+        }
+    }
+
+}

app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.CoordinatorLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <android.support.design.widget.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/AppTheme.AppBarOverlay">
+
+        <android.support.v7.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/AppTheme.PopupOverlay"/>
+
+    </android.support.design.widget.AppBarLayout>
+
+    <include layout="@layout/content_main"/>
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_margin="@dimen/fab_margin"
+        app:srcCompat="@android:drawable/ic_dialog_email"/>
+
+</android.support.design.widget.CoordinatorLayout>

app/src/main/res/layout/content_main.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".MainActivity"
+    tools:showIn="@layout/activity_main">
+
+</android.support.constraint.ConstraintLayout>

app/src/main/res/values/dimens.xml

@@ -0,0 +1,3 @@
+<resources>
+    <dimen name="fab_margin">16dp</dimen>
+</resources>

app/src/main/res/values/strings.xml

@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">ActivityJournal</string>
+    <string name="title_activity_main">MainActivity</string>
 </resources>

app/src/main/res/values/styles.xml

@@ -8,4 +8,13 @@
         <item name="colorAccent">@color/colorAccent</item>
     </style>
 
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
+
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>
+
 </resources>