[GSoC] Added Unit Tests and Fixed Landscape Mode Bug (#3872)

* Fixes #3861 Use the APIs to fetch leaderboard’s based on uploads via mobile app (all time) and display it in the Leaderboard screen.

* Fixed Bug - missing data in landscape mode

* Added Unit Tests for Leaderboard

* Added JavaDocs

* Updated JavaDocs

app/build.gradle

@@ -21,7 +21,7 @@ dependencies {
     // Utils
     implementation 'in.yuvi:http.fluent:1.3'
     implementation 'com.google.code.gson:gson:2.8.5'
-    implementation 'com.squareup.okhttp3:okhttp:4.5.0'
+    implementation 'com.squareup.okhttp3:okhttp:4.8.0'
     implementation 'com.squareup.okio:okio:2.2.2'
     implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'
     implementation 'io.reactivex.rxjava2:rxjava:2.2.3'
@@ -50,6 +50,7 @@ dependencies {
     testImplementation "androidx.paging:paging-common-ktx:$PAGING_VERSION"
     implementation "androidx.paging:paging-rxjava2-ktx:$PAGING_VERSION"
     implementation "androidx.recyclerview:recyclerview:1.2.0-alpha02"
+    implementation 'com.squareup.okhttp3:okhttp-ws:3.4.1'
 
     // Logging
     implementation 'ch.acra:acra-dialog:5.3.0'
@@ -79,7 +80,7 @@ dependencies {
     testImplementation 'junit:junit:4.13'
     testImplementation 'org.robolectric:robolectric:4.3'
     testImplementation 'androidx.test:core:1.2.0'
-    testImplementation 'com.squareup.okhttp3:mockwebserver:3.12.1'
+    testImplementation "com.squareup.okhttp3:mockwebserver:4.8.0"
     testImplementation "org.powermock:powermock-module-junit4:2.0.0-beta.5"
     testImplementation "org.powermock:powermock-api-mockito2:2.0.0-beta.5"
     testImplementation 'org.mockito:mockito-core:2.23.0'
@@ -94,7 +95,7 @@ dependencies {
     androidTestImplementation 'androidx.test:runner:1.2.0'
     androidTestImplementation 'androidx.test:rules:1.2.0'
     androidTestImplementation 'androidx.annotation:annotation:1.1.0'
-    androidTestImplementation 'com.squareup.okhttp3:mockwebserver:3.12.1'
+    androidTestImplementation 'com.squareup.okhttp3:mockwebserver:4.8.0'
     androidTestUtil 'androidx.test:orchestrator:1.2.0'
 
     // Debugging

app/src/main/java/fr/free/nrw/commons/profile/ProfileActivity.java

@@ -56,6 +56,9 @@ public class ProfileActivity extends NavigationBaseActivity {
         context.startActivity(intent);
     }
 
+    /**
+     * Set the tabs for the fragments
+     */
     private void setTabs() {
         List<Fragment> fragmentList = new ArrayList<>();
         List<String> titleList = new ArrayList<>();
@@ -69,7 +72,6 @@ public class ProfileActivity extends NavigationBaseActivity {
         viewPagerAdapter.notifyDataSetChanged();
 
     }
-
     @Override
     public void onDestroy() {
         super.onDestroy();

app/src/main/java/fr/free/nrw/commons/profile/leaderboard/LeaderboardFragment.java

@@ -97,6 +97,10 @@ public class LeaderboardFragment extends CommonsDaggerSupportFragment {
         }
     }
 
+    /**
+     * Set the views
+     * @param response Leaderboard Response Object
+     */
     private void setLeaderboardUser(LeaderboardResponse response) {
         hideProgressBar();
         avatar.setImageURI(

app/src/main/java/fr/free/nrw/commons/profile/leaderboard/LeaderboardListAdapter.java

@@ -32,6 +32,10 @@ public class LeaderboardListAdapter extends RecyclerView.Adapter<LeaderboardList
             this.count = itemView.findViewById(R.id.user_count);
         }
 
+        /**
+         * This method will return the Context
+         * @return Context
+         */
         public Context getContext() {
             return itemView.getContext();
         }
@@ -41,6 +45,12 @@ public class LeaderboardListAdapter extends RecyclerView.Adapter<LeaderboardList
         this.leaderboardList = leaderboardList;
     }
 
+    /**
+     * Overrides the onCreateViewHolder and inflates the recyclerview list item layout
+     * @param parent
+     * @param viewType
+     * @return
+     */
     @NonNull
     @Override
     public LeaderboardListAdapter.ListViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
@@ -50,6 +60,11 @@ public class LeaderboardListAdapter extends RecyclerView.Adapter<LeaderboardList
         return new ListViewHolder(view);
     }
 
+    /**
+     * Overrides the onBindViewHolder Set the view at the specific position with the specific value
+     * @param holder
+     * @param position
+     */
     @Override
     public void onBindViewHolder(@NonNull LeaderboardListAdapter.ListViewHolder holder, int position) {
         TextView rank = holder.rank;
@@ -66,6 +81,10 @@ public class LeaderboardListAdapter extends RecyclerView.Adapter<LeaderboardList
         count.setText(leaderboardList.get(position).getCategoryCount().toString());
     }
 
+    /**
+     * Override the getItemCount method
+     * @return the size of the recycler view list
+     */
     @Override
     public int getItemCount() {
         return leaderboardList.size();

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

@@ -8,7 +8,7 @@
 
   <androidx.constraintlayout.widget.ConstraintLayout
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="wrap_content">
 
     <com.facebook.drawee.view.SimpleDraweeView
       android:id="@+id/avatar"
@@ -87,13 +87,19 @@
 
     </LinearLayout>
 
-    <androidx.recyclerview.widget.RecyclerView
-      android:id="@+id/leaderboard_list"
+    <androidx.core.widget.NestedScrollView
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       app:layout_constraintEnd_toEndOf="parent"
       app:layout_constraintStart_toStartOf="parent"
-      app:layout_constraintTop_toBottomOf="@+id/column_names" />
+      app:layout_constraintTop_toBottomOf="@+id/column_names">
+
+      <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/leaderboard_list"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"/>
+
+    </androidx.core.widget.NestedScrollView>
 
     <ProgressBar
       android:id="@+id/progressBar"

app/src/test/kotlin/fr/free/nrw/commons/delete/ReasonBuilderTest.kt

@@ -6,6 +6,7 @@ import fr.free.nrw.commons.Media
 import fr.free.nrw.commons.auth.SessionManager
 import fr.free.nrw.commons.mwapi.OkHttpJsonApiClient
 import fr.free.nrw.commons.profile.achievements.FeedbackResponse
+import fr.free.nrw.commons.profile.leaderboard.LeaderboardResponse
 import fr.free.nrw.commons.utils.ViewUtilWrapper
 import io.reactivex.Single
 import media
@@ -54,6 +55,8 @@ class ReasonBuilderTest {
         `when`(sessionManager?.doesAccountExist()).thenReturn(true)
         `when`(okHttpJsonApiClient!!.getAchievements(anyString()))
                 .thenReturn(Single.just(mock(FeedbackResponse::class.java)))
+        `when`(okHttpJsonApiClient!!.getLeaderboard(anyString(), anyString(), anyString(), anyString(), anyString()))
+            .thenReturn(Single.just(mock(LeaderboardResponse::class.java)))
 
         val media = media(filename="test_file", dateUploaded = Date())
 

app/src/test/kotlin/fr/free/nrw/commons/leaderboard/LeaderboardApiTest.java

@@ -0,0 +1,116 @@
+package fr.free.nrw.commons.leaderboard;
+
+import com.google.gson.Gson;
+import fr.free.nrw.commons.profile.leaderboard.LeaderboardResponse;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import okhttp3.HttpUrl;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Request.Builder;
+import okhttp3.Response;
+import okhttp3.mockwebserver.MockResponse;
+import okhttp3.mockwebserver.MockWebServer;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * This class tests the Leaderboard API calls
+ */
+public class LeaderboardApiTest {
+
+    MockWebServer server;
+    private static final String TEST_USERNAME = "user";
+    private static final String TEST_AVATAR = "avatar";
+    private static final int TEST_USER_RANK = 1;
+    private static final int TEST_USER_COUNT = 0;
+
+    private static final String FILE_NAME = "leaderboard_sample_response.json";
+    private static final String ENDPOINT = "/leaderboard.py";
+
+    /**
+     * This method initialises a Mock Server
+     */
+    @Before
+    public void initTest() {
+        server = new MockWebServer();
+    }
+
+    /**
+     * This method will setup a Mock Server and load Test JSON Response File
+     * @throws Exception
+     */
+    @Before
+    public void setUp() throws Exception {
+
+        String testResponseBody = convertStreamToString(getClass().getClassLoader().getResourceAsStream(FILE_NAME));
+
+        server.enqueue(new MockResponse().setBody(testResponseBody));
+        server.start();
+    }
+
+    /**
+     * This method converts a Input Stream to String
+     * @param is takes Input Stream of JSON File as Parameter
+     * @return a String with JSON data
+     * @throws Exception
+     */
+    private static String convertStreamToString(InputStream is) throws Exception {
+        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
+        StringBuilder sb = new StringBuilder();
+        String line;
+        while ((line = reader.readLine()) != null) {
+            sb.append(line).append("\n");
+        }
+        reader.close();
+        return sb.toString();
+    }
+
+    /**
+     * This method will call the Mock Server and Test it with sample values.
+     * It will test the Leaderboard API call functionality and check if the object is
+     * being created with the correct values
+     * @throws IOException
+     */
+    @Test
+    public void apiTest() throws IOException {
+        HttpUrl httpUrl = server.url(ENDPOINT);
+        LeaderboardResponse response = sendRequest(new OkHttpClient(), httpUrl);
+
+        Assert.assertEquals(TEST_AVATAR, response.getAvatar());
+        Assert.assertEquals(TEST_USERNAME, response.getUsername());
+        Assert.assertEquals(Integer.valueOf(TEST_USER_RANK), response.getRank());
+        Assert.assertEquals(Integer.valueOf(TEST_USER_COUNT), response.getCategoryCount());
+    }
+
+    /**
+     * This method will call the Mock API and returns the Leaderboard Response Object
+     * @param okHttpClient
+     * @param httpUrl
+     * @return Leaderboard Response Object
+     * @throws IOException
+     */
+    private LeaderboardResponse sendRequest(OkHttpClient okHttpClient, HttpUrl httpUrl)
+        throws IOException {
+        Request request = new Builder().url(httpUrl).build();
+        Response response = okHttpClient.newCall(request).execute();
+        if (response.isSuccessful()) {
+            Gson gson = new Gson();
+            return gson.fromJson(response.body().string(), LeaderboardResponse.class);
+        }
+        return null;
+    }
+
+    /**
+     * This method shuts down the Mock Server
+     * @throws IOException
+     */
+    @After
+    public void shutdown() throws IOException {
+        server.shutdown();
+    }
+}

app/src/test/resources/leaderboard_sample_response.json

@@ -0,0 +1,19 @@
+{
+  "status": 200,
+  "username": "user",
+  "category_count": 0,
+  "limit": null,
+  "avatar": "avatar",
+  "offset": null,
+  "duration": "all_time",
+  "leaderboard_list": [
+    {
+      "username": "user",
+      "category_count": 0,
+      "avatar": "avatar",
+      "rank": 1
+    }
+  ],
+  "category": "used",
+  "rank": 1
+}