diff --git a/pom.xml b/pom.xml
index 3ce85b1..0e0eaa1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,6 +49,20 @@
             <version>2.1</version>
         </dependency>
 
+        <!-- UTs -->
+        <dependency>
+            <groupId>org.testng</groupId>
+            <artifactId>testng</artifactId>
+            <version>7.0.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>5.12.0</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/tv/mangrana/config/ConfigLoader.java b/src/main/java/tv/mangrana/config/ConfigLoader.java
index 36fd610..d76aac4 100644
--- a/src/main/java/tv/mangrana/config/ConfigLoader.java
+++ b/src/main/java/tv/mangrana/config/ConfigLoader.java
@@ -2,11 +2,15 @@ package tv.mangrana.config;
 
 import tv.mangrana.exception.IncorrectWorkingReferencesException;
 
+import static tv.mangrana.config.ConfigLoader.ProjectConfiguration.TEST_MODE;
+
 public class ConfigLoader extends CommonConfigFileLoader<ConfigLoader.ProjectConfiguration> {
 
     private static final String CONFIG_FILE = "SonarrFixerConfig.yml";
     private static ConfigLoader service;
 
+    private static boolean isUnitTesting = false;
+
     private ConfigLoader() throws IncorrectWorkingReferencesException {
         super(ProjectConfiguration.class);
     }
@@ -25,6 +29,13 @@ public class ConfigLoader extends CommonConfigFileLoader<ConfigLoader.ProjectCon
         return get(configParam).equals("true");
     }
 
+    public static boolean isTestMode(){
+        return isUnitTesting || get(TEST_MODE).equals("true");
+    }
+    public static void weAreUnitTesting() {
+        isUnitTesting = true;
+    }
+
     public enum ProjectConfiguration {
         UPLOADS_PATHS,
         TEST_MODE
diff --git a/src/main/java/tv/mangrana/worker/FailedImportFixer.java b/src/main/java/tv/mangrana/worker/FailedImportFixer.java
index bc89952..70bbded 100644
--- a/src/main/java/tv/mangrana/worker/FailedImportFixer.java
+++ b/src/main/java/tv/mangrana/worker/FailedImportFixer.java
@@ -1,5 +1,6 @@
 package tv.mangrana.worker;
 
+import tv.mangrana.config.ConfigLoader;
 import tv.mangrana.exception.IncorrectWorkingReferencesException;
 import tv.mangrana.sonarr.api.schema.queue.Record;
 import tv.mangrana.sonarr.api.schema.series.SonarrSerie;
@@ -74,6 +75,7 @@ class FailedImportFixer {
         return path.toFile().isFile();
     }
     private boolean isAVideo(Path path) {
+        if (ConfigLoader.isTestMode()) return true;
         return path.toFile().length() > MINIMUM_FILE_SIZE_TO_BE_CONSIDERED_A_VIDEO;
     }
 
diff --git a/src/main/java/tv/mangrana/worker/FileCopier.java b/src/main/java/tv/mangrana/worker/FileCopier.java
index 2167d48..10d594f 100644
--- a/src/main/java/tv/mangrana/worker/FileCopier.java
+++ b/src/main/java/tv/mangrana/worker/FileCopier.java
@@ -6,7 +6,6 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 
-import static tv.mangrana.config.ConfigLoader.ProjectConfiguration.TEST_MODE;
 import static tv.mangrana.config.ConfigLoader.ProjectConfiguration.UPLOADS_PATHS;
 
 class FileCopier {
@@ -14,7 +13,7 @@ class FileCopier {
         try {
             createDestinationFolderIfApply(destination);
 
-            if (!ConfigLoader.isEnabled(TEST_MODE))
+            if (!ConfigLoader.isTestMode())
                 Files.createLink(destination, source);
         } catch (IOException e) {
             System.out.printf("error when creating hardlink with destination %s, error: %s%n",
@@ -27,7 +26,7 @@ class FileCopier {
         var destinationFolder = destinationFile.getParent();
         if (isTemporaryDestination(destinationFolder) && !Files.exists(destinationFolder)) {
             System.out.printf("destination folder %s will be created", destinationFolder);
-            if (!ConfigLoader.isEnabled(TEST_MODE))
+            if (!ConfigLoader.isTestMode())
                 Files.createDirectories(destinationFile);
         }
     }
diff --git a/src/main/java/tv/mangrana/worker/MainWorker.java b/src/main/java/tv/mangrana/worker/MainWorker.java
index 9505587..eda2c4f 100644
--- a/src/main/java/tv/mangrana/worker/MainWorker.java
+++ b/src/main/java/tv/mangrana/worker/MainWorker.java
@@ -3,28 +3,32 @@ package tv.mangrana.worker;
 import tv.mangrana.config.ConfigLoader;
 import tv.mangrana.exception.IncorrectWorkingReferencesException;
 import tv.mangrana.sonarr.Sonarr;
-
-import static tv.mangrana.config.ConfigLoader.ProjectConfiguration.TEST_MODE;
+import tv.mangrana.sonarr.api.client.gateway.SonarrApiGateway;
 
 public class MainWorker {
 
     private final QueueFixer queueFixer;
 
     public static void main(String[] args) throws IncorrectWorkingReferencesException {
-        var worker = new MainWorker();
+        SonarrApiGateway sonarrApiGateway = configureSonarApiGateway();
+        var worker = new MainWorker(sonarrApiGateway);
         worker.work();
     }
 
-    private MainWorker() throws IncorrectWorkingReferencesException {
+    private static SonarrApiGateway configureSonarApiGateway() {
         var configLoader = ConfigLoader.getLoader();
-        if (ConfigLoader.isEnabled(TEST_MODE))
-            System.out.println("ATTENTION! TEST MODE ENABLED. No folders will be created nor files copied.");
-
         Sonarr.initService(configLoader);
-        queueFixer = new QueueFixer();
+        return Sonarr.api();
     }
 
-    private void work() {
+    MainWorker(SonarrApiGateway sonarGateway) throws IncorrectWorkingReferencesException {
+        if (ConfigLoader.isTestMode())
+            System.out.println("ATTENTION! TEST MODE ENABLED. No folders will be created nor files copied.");
+
+        queueFixer = new QueueFixer(sonarGateway);
+    }
+
+    void work() {
         queueFixer.fix();
     }
 }
diff --git a/src/main/java/tv/mangrana/worker/QueueFixer.java b/src/main/java/tv/mangrana/worker/QueueFixer.java
index 549c51a..f73c5cc 100644
--- a/src/main/java/tv/mangrana/worker/QueueFixer.java
+++ b/src/main/java/tv/mangrana/worker/QueueFixer.java
@@ -1,7 +1,6 @@
 package tv.mangrana.worker;
 
 import tv.mangrana.config.ConfigLoader;
-import tv.mangrana.sonarr.Sonarr;
 import tv.mangrana.sonarr.api.client.gateway.SonarrApiGateway;
 import tv.mangrana.sonarr.api.schema.queue.Record;
 import tv.mangrana.sonarr.api.schema.series.SonarrSerie;
@@ -11,16 +10,14 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 
-import static tv.mangrana.config.ConfigLoader.ProjectConfiguration.TEST_MODE;
-
 public class QueueFixer {
     final static String IMPORT_FAILURE_BECAUSE_MATCHED_BY_ID = "Found matching series via grab history, but release was matched to series by ID. Automatic import is not possible. See the FAQ for details.";
 
     private final SonarrApiGateway sonarrApiGateway;
     private final FailedImportFixer.Factory fixerFactory;
 
-    QueueFixer() {
-        sonarrApiGateway = Sonarr.api();
+    QueueFixer(SonarrApiGateway sonarGateway) {
+        sonarrApiGateway = sonarGateway;
         fixerFactory = FailedImportFixer.factory();
     }
 
@@ -67,7 +64,7 @@ public class QueueFixer {
     private void cleanWorkedElementsFromQueue(List<Record> sonarQueue, List<Record> recordsToFix) {
         List<String> workedTitles = mapRecord2Title(recordsToFix);
         List<Integer> recordIds2Delete = filterPresentTitlesFromQueue(sonarQueue, workedTitles);
-        if (!ConfigLoader.isEnabled(TEST_MODE))
+        if (!ConfigLoader.isTestMode())
             sonarrApiGateway.deleteQueueElements(recordIds2Delete);
     }
 
diff --git a/src/test/java/tv/mangrana/worker/SonarQueueFixerTest.java b/src/test/java/tv/mangrana/worker/SonarQueueFixerTest.java
new file mode 100644
index 0000000..7023a84
--- /dev/null
+++ b/src/test/java/tv/mangrana/worker/SonarQueueFixerTest.java
@@ -0,0 +1,63 @@
+package tv.mangrana.worker;
+
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.Test;
+import tv.mangrana.config.ConfigLoader;
+import tv.mangrana.sonarr.api.client.gateway.SonarrApiGateway;
+import tv.mangrana.sonarr.api.schema.queue.Record;
+import tv.mangrana.sonarr.api.schema.queue.StatusMessage;
+import tv.mangrana.sonarr.api.schema.series.SonarrSerie;
+
+import java.util.List;
+
+import static org.mockito.Mockito.*;
+import static tv.mangrana.worker.QueueFixer.IMPORT_FAILURE_BECAUSE_MATCHED_BY_ID;
+
+public class SonarQueueFixerTest {
+
+    private SonarrApiGateway sonarrApiGateway;
+
+    private MainWorker mainWorker;
+
+    @BeforeMethod
+    public void setup() {
+        ConfigLoader.weAreUnitTesting();
+        sonarrApiGateway = mock(SonarrApiGateway.class, RETURNS_DEEP_STUBS);
+        mainWorker = new MainWorker(sonarrApiGateway);
+    }
+
+    @Test //just for debugging purpose
+    public void whenDestinationFolderDoesNotExist_AndIsTemporary_shouldCreateIt_AndHardlinkFiles() {
+        prepareSonarrMockQueue();
+        prepareSonarrMockSerie();
+
+        mainWorker.work();
+
+        //asserting nothing, sorry (too stuff would be needed to be mocked, and it's not worthy at this moment)
+    }
+
+    private void prepareSonarrMockQueue() {
+        var record = new Record()
+                .withSeriesId(getRandomInteger())
+                .withTitle("Star Trek (1987) S01 [1080p]")
+                .withOutputPath("./test/torrents/Star Trek (1987) S01 [1080p]")
+                .withStatusMessages(prepareWarningMessages());
+        when(sonarrApiGateway.getFullQueue().getRecords()).thenReturn(List.of(record));
+    }
+
+    private int getRandomInteger() {
+        return Double.valueOf(Math.random()*100).intValue();
+    }
+
+    private List<StatusMessage> prepareWarningMessages() {
+        return List.of(new StatusMessage()
+                .withMessages(List.of(IMPORT_FAILURE_BECAUSE_MATCHED_BY_ID)));
+    }
+
+    private void prepareSonarrMockSerie() {
+        SonarrSerie serie = new SonarrSerie()
+                .withPath("./test/sonarr_uploads/Star Trek (1987) {tvdb-71470}");
+        when(sonarrApiGateway.getSerieById(anyInt())).thenReturn(serie);
+    }
+
+}
\ No newline at end of file
diff --git a/test/torrents/Star Trek (1987) S01 [1080p]/Star Trek (1987) S01 [1080p] E01.fakeVideo b/test/torrents/Star Trek (1987) S01 [1080p]/Star Trek (1987) S01 [1080p] E01.fakeVideo
new file mode 100644
index 0000000..e69de29