Add some tests for HtmlParser class

app/build.gradle

@@ -13,6 +13,9 @@ android {
         versionName "1.0.2.2"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+    testOptions {
+        unitTests.returnDefaultValues = true
+    }
     buildTypes {
         release {
             minifyEnabled false // proguard makes some functionalities fail so It's disabled until I find the problem source

app/src/main/java/com/readrops/app/utils/ParsingResult.java

@@ -116,7 +116,18 @@ public class ParsingResult extends AbstractItem<ParsingResult, ParsingResult.Par
         public void unbindView(@NotNull ParsingResult item) {
             // not useful
         }
+    }
 
+    @Override
+    public boolean equals(Object o) {
+        if (o == null)
+            return false;
+        else if (!(o instanceof ParsingResult))
+            return false;
+        else {
+            ParsingResult parsingResult = (ParsingResult) o;
 
+            return parsingResult.getUrl().equals(this.getUrl());
+        }
     }
 }

app/src/test/java/com/readrops/app/HtmlParserTest.java

@@ -0,0 +1,36 @@
+package com.readrops.app;
+
+import com.readrops.app.utils.HtmlParser;
+import com.readrops.app.utils.ParsingResult;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import static junit.framework.TestCase.assertEquals;
+
+public class HtmlParserTest {
+
+    @Test
+    public void getFeedLinkTest() throws Exception {
+        String url = "https://github.com/readrops/Readrops";
+
+        ParsingResult parsingResult = new ParsingResult("https://github.com/readrops/Readrops/commits/master.atom", "Recent Commits to Readrops:master");
+        List<ParsingResult> parsingResultList = new ArrayList<>();
+        parsingResultList.add(parsingResult);
+
+        List<ParsingResult> parsingResultList1 = HtmlParser.getFeedLink(url);
+
+        Assert.assertEquals(parsingResultList, parsingResultList1);
+    }
+
+    @Test
+    public void getFaviconLinkTest() throws IOException {
+        String url = "https://github.com/readrops/Readrops";
+
+        assertEquals("https://github.com/fluidicon.png", HtmlParser.getFaviconLink(url));
+    }
+}