add tests

app/src/androidTest/java/com/h/pixeldroid/SwipeTest.kt

@@ -1,17 +1,17 @@
 package com.h.pixeldroid
 
 import android.content.Context
-import android.content.Intent
 import androidx.test.core.app.ActivityScenario
 import androidx.test.espresso.Espresso.onView
 import androidx.test.espresso.action.ViewActions.swipeLeft
+import androidx.test.espresso.action.ViewActions.swipeRight
 import androidx.test.espresso.assertion.ViewAssertions.matches
 import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
 import androidx.test.espresso.matcher.ViewMatchers.withId
 import androidx.test.ext.junit.rules.ActivityScenarioRule
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry.getInstrumentation
-import androidx.test.rule.ActivityTestRule
+import com.google.android.material.tabs.TabLayout
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -31,10 +31,28 @@ class SwipeTest {
         ActivityScenario.launch(MainActivity::class.java)
     }
 
-    @Test
-    fun swipingRightOnHomepageShowsSettings() {
-        onView(withId(R.id.view_pager)).perform(swipeLeft()).perform(swipeLeft()).perform(swipeLeft()).perform(swipeLeft())
-        onView(withId(R.id.nbFollowersTextView)).check(matches(isDisplayed()))
+    fun swipingLeftOnSearchShowsCameraFragment() {
+        val tab: TabLayout = onView(withId(R.id.tabs))
 
+        onView(withId(R.id.main_activity_main_linear_layout))
+            .perform(swipeLeft())
+        onView(withId(R.id.camera_fragment_main_linear_layout)).check(matches(isDisplayed()))
+    }
+
+    @Test
+    fun swipingRightOnFavoriteShowsCameraFragment() {
+        onView(withId(R.id.main_activity_main_linear_layout))
+            .perform(swipeRight())
+        onView(withId(R.id.camera_fragment_main_linear_layout)).check(matches(isDisplayed()))
+    }
+
+    @Test
+    fun swipingLeftOnShowsProfileFragment() {
+        onView(withId(R.id.view_pager))
+            .perform(swipeLeft())
+            .perform(swipeLeft())
+            .perform(swipeLeft())
+            .perform(swipeLeft())
+        onView(withId(R.id.nbFollowersTextView)).check(matches(isDisplayed()))
     }
 }

app/src/main/java/com/h/pixeldroid/fragments/CameraFragment.kt

@@ -2,8 +2,6 @@ package com.h.pixeldroid.fragments
 
 import android.app.Activity
 import android.content.Intent
-import android.graphics.Bitmap
-import android.net.Uri
 import android.os.Bundle
 import android.util.Log
 import androidx.fragment.app.Fragment
@@ -12,7 +10,6 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.Button
 import android.widget.ImageView
-import android.widget.Toast
 import com.h.pixeldroid.R
 
 const val PICK_IMAGE_REQUEST = 1
@@ -27,8 +24,8 @@ class CameraFragment : Fragment() {
         savedInstanceState: Bundle?
     ): View? {
         val view = inflater.inflate(R.layout.fragment_camera, container, false)
-        val uploadPictureButton: Button = view.findViewById(R.id.uploadPictureButton)
-        uploadedPictureView = view.findViewById(R.id.uploadedPictureView)
+        val uploadPictureButton: Button = view.findViewById(R.id.upload_picture_button)
+        uploadedPictureView = view.findViewById(R.id.uploaded_picture_view)
         uploadPictureButton.setOnClickListener{
             uploadPicture()
         }

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

@@ -11,6 +11,7 @@
 
 
     <LinearLayout
+        android:id="@+id/main_activity_main_linear_layout"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:orientation="vertical">

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

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/camera_fragment_main_linear_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:gravity="center_horizontal"
@@ -8,7 +9,7 @@
     android:orientation="vertical">
 
     <Button
-        android:id="@+id/uploadPictureButton"
+        android:id="@+id/upload_picture_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:gravity="center"
@@ -19,7 +20,7 @@
         android:textColor="@color/cardview_light_background"/>
 
     <ImageView
-        android:id="@+id/uploadedPictureView"
+        android:id="@+id/uploaded_picture_view"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_margin="15dp"