diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index adbebcba3c1..580c0020a8c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,10 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@v1
-        with:
-          depth: 1
-          submodules: false
+        uses: actions/checkout@v2
       - name: Set up JDK
         uses: actions/setup-java@v1
         with:
@@ -42,10 +39,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@v1
-        with:
-          depth: 1
-          submodules: false
+        uses: actions/checkout@v2
       - name: Set up JDK
         uses: actions/setup-java@v1
         with:
@@ -89,10 +83,7 @@ jobs:
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     steps:
       - name: Checkout source
-        uses: actions/checkout@v1
-        with:
-          depth: 1
-          submodules: false
+        uses: actions/checkout@v2
       - name: Set up JDK
         uses: actions/setup-java@v1
         with:
@@ -138,10 +129,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@v1
-        with:
-          depth: 1
-          submodules: false
+        uses: actions/checkout@v2
       - name: Set up JDK
         uses: actions/setup-java@v1
         with:
@@ -164,6 +152,11 @@ jobs:
         run: xvfb-run --auto-servernum ./gradlew guiTest
         env:
           CI: "true"
+      - name: Upload screenshots to GitHub workflow artifacts store
+        uses: actions/upload-artifact@master
+        with:
+          name: screenshots
+          path: build/screenshots
   codecoverage:
     name: Code coverage
     runs-on: ubuntu-latest
@@ -180,10 +173,7 @@ jobs:
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
     steps:
       - name: Checkout source
-        uses: actions/checkout@v1
-        with:
-          depth: 1
-          submodules: false
+        uses: actions/checkout@v2
       - name: Set up JDK
         uses: actions/setup-java@v1
         with:
@@ -203,7 +193,7 @@ jobs:
           path: ~/.gradle/wrapper
           key: ${{ runner.os }}-gradle-${{ hashFiles('gradle/wrapper/gradle-wrapper.properties') }}
       - name: Update test coverage metrics
-        run: xvfb-run --auto-servernum ./gradlew jacocoTestReport && bash <(curl -s https://codecov.io/bash);
+        run: xvfb-run --server-args=":1 -screen 0 1024x768x24" --auto-servernum ./gradlew jacocoTestReport && bash <(curl -s https://codecov.io/bash);
         env:
           CI: "false" # we pretend to run locally - even if tests fail on the CI, they count towards test coverage
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/src/main/java/org/jabref/JabRefMain.java b/src/main/java/org/jabref/JabRefMain.java
index ec1cf738ac8..ab0f0f79e05 100644
--- a/src/main/java/org/jabref/JabRefMain.java
+++ b/src/main/java/org/jabref/JabRefMain.java
@@ -159,7 +159,7 @@ private static boolean handleMultipleAppInstances(String[] args) {
         return true;
     }
 
-    private static void applyPreferences(JabRefPreferences preferences) {
+    public static void applyPreferences(JabRefPreferences preferences) {
         // Read list(s) of journal names and abbreviations
         Globals.journalAbbreviationLoader = new JournalAbbreviationLoader();
 
diff --git a/src/main/java/org/jabref/gui/JabRefFrame.java b/src/main/java/org/jabref/gui/JabRefFrame.java
index b097b875c92..0d09379cf08 100644
--- a/src/main/java/org/jabref/gui/JabRefFrame.java
+++ b/src/main/java/org/jabref/gui/JabRefFrame.java
@@ -3,7 +3,6 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -143,11 +142,10 @@
 import org.slf4j.LoggerFactory;
 
 /**
- * The main window of the application.
+ * The main window of JabRef's UI
  */
 public class JabRefFrame extends BorderPane {
 
-    // Frame titles.
     public static final String FRAME_TITLE = "JabRef";
 
     private static final Logger LOGGER = LoggerFactory.getLogger(JabRefFrame.class);
@@ -276,7 +274,7 @@ public void run() {
         }
     }
 
-    private Void showTrackingNotification() {
+    private void showTrackingNotification() {
         if (!Globals.prefs.shouldCollectTelemetry()) {
             boolean shouldCollect = dialogService.showConfirmationDialogAndWait(
                     Localization.lang("Telemetry: Help make JabRef better"),
@@ -287,13 +285,10 @@ private Void showTrackingNotification() {
         }
 
         Globals.prefs.askedToCollectTelemetry();
-
-        return null;
     }
 
     public void refreshTitleAndTabs() {
         DefaultTaskExecutor.runInJavaFXThread(() -> {
-
             setWindowTitle();
             updateAllTabTitles();
         });
@@ -328,22 +323,6 @@ public void setWindowTitle() {
         }
     }
 
-    /**
-     * The MacAdapter calls this method when a "BIB" file has been double-clicked from the Finder.
-     */
-    public void openAction(String filePath) {
-        Path file = Paths.get(filePath);
-        // all the logic is done in openIt. Even raising an existing panel
-        getOpenDatabaseAction().openFile(file, true);
-    }
-
-    /**
-     * The MacAdapter calls this method when "About" is selected from the application menu.
-     */
-    public void about() {
-        HelpAction.getMainHelpPageCommand().execute();
-    }
-
     public JabRefPreferences prefs() {
         return prefs;
     }
diff --git a/src/main/java/org/jabref/gui/journals/ManageJournalAbbreviationsView.java b/src/main/java/org/jabref/gui/journals/ManageJournalAbbreviationsView.java
index a1a27ef1061..689e153d4a4 100644
--- a/src/main/java/org/jabref/gui/journals/ManageJournalAbbreviationsView.java
+++ b/src/main/java/org/jabref/gui/journals/ManageJournalAbbreviationsView.java
@@ -52,7 +52,9 @@ public class ManageJournalAbbreviationsView extends BaseDialog<Void> {
     public ManageJournalAbbreviationsView() {
         this.setTitle(Localization.lang("Journal abbreviations"));
 
-        ViewLoader.view(this).load().setAsDialogPane(this);
+        ViewLoader.view(this)
+                  .load()
+                  .setAsDialogPane(this);
 
         ControlHelper.setAction(saveButton, getDialogPane(), event -> saveAbbreviationsAndCloseDialog());
     }
diff --git a/src/main/java/org/jabref/gui/util/BaseDialog.java b/src/main/java/org/jabref/gui/util/BaseDialog.java
index 921be10e748..7898cd7bc64 100644
--- a/src/main/java/org/jabref/gui/util/BaseDialog.java
+++ b/src/main/java/org/jabref/gui/util/BaseDialog.java
@@ -36,7 +36,7 @@ protected BaseDialog() {
 
         setDialogIcon(IconTheme.getJabRefImageFX());
         setResizable(true);
-        Globals.getThemeLoader().installCss(getDialogPane().getScene(), Globals.prefs);
+        //Globals.getThemeLoader().installCss(getDialogPane().getScene(), Globals.prefs);
     }
 
     private Optional<Button> getDefaultButton() {
diff --git a/src/main/java/org/jabref/logic/util/buildTest.properties b/src/main/java/org/jabref/logic/util/buildTest.properties
new file mode 100644
index 00000000000..aa067886b9f
--- /dev/null
+++ b/src/main/java/org/jabref/logic/util/buildTest.properties
@@ -0,0 +1,7 @@
+version=100.0.0
+year=2020
+authors=1160300608, 1160300614, Aaron Chen, Abhishek Rai, Abraham Polk, Adam Rehn, Admir Obralija, Adrian Daerr, Akash Deep, Alain Vaucher, Aleksandrs Gusevs, Alessio Pollero, Alex Montgomery, Alex Tarrix, Alexis Gallagher, Alexsandro Lauber, Ali Ayan, Ali Zhagparov, Alick Zhao, Allison Sampaio, Aman Jain, Ambrogio Oliva, Amish Shah, Andreas Amann, Andreas Buhr, Andreas Rudert, Andrew Collins, Andrew Levit, Andrés Sánchez, Anh Nghia Tran, Anita Armbruster, Antonio Ribeiro, Arno Blouin, Arthur Fröhlich, Atul Kaushik, Ayachi Nene, Bartosz J. Kaczkowski, Bartłomiej Dach, Behrouz Javanmardi, Benjamin Köhler, Berk Gureken, Bernd Kalbfuss, Bernhard Tempel, Bharat Raghunathan, Bhargava Varadharajan, Bherwani Ayush, Bitor Tonixa Biriato Balença, Brian Quistorff, Brian Van Essen, captain123, Carl Christian Snethlage, carlg0ransson, Carlos Morales, Carlos Silla, Carlos Silva, Cerrianne Santos, Chamod Shehanka, Chelsey Ong, Chris Brown, Christian Bartsch, Christian Kopf, Christoph Braun, Christoph Hochreiner, Christoph Schwentker, Christopher Oezbek, Christopher S. Lester, conorfos, cs464osu, Cyrille d'Haese, Dale Visser, Daniel Bruehl, Daniel Mair, Daniel Rodrigues, Daniel Svärd, David Gleich, David Méndez, David Weitzman, Dawid Owoc, Deepak Kumar, Dennis Tschechlov, DevSiroukane, Dilan Coss, dima, Domenico Cufalo, Dominik Schrempf, Dominik Traczyk, Dominik Waßenhoven, Douglas Nassif Roma Junior, Eduard Braun, Eduardo Greco, Egon Willighagen, Eiswindyeti, Ellen Reitmayr, Erdem Derebasoglu, Erdem Derebaşoğlu, Erik Putrycz, Ervin Kolenovic, Escoul, Ethan Harris, Fabian Bauer, Fabian Bieker, Fabrice Dessaint, Fancy Zhang, Fedor Bezrukov, Felix Berger, Felix Langner, Felix Wilke, Fernando Santagata, ffffatgoose, Florian Beetz, Florian Straßer, Foivos Christoulakis, Francois Charette, Frank Steimle, frasca80, Fred Stevens, Frédéric Darboux, Galileo Sartor, Geoffrey Taerim Kim, Gert Renckens, Gregor Herrmann, Guillaume Gardey, Hakan Duran, Hannes Restel, Harinda Samarasekara, Igor Chernyavsky, Igor Steinmacher, Illes Solt, Ingvar Jackal, Jackson Ryan, Jan Frederik Maas, Jan Kubovy, Jan Schäfer, Janosch Kutscherauer, Jason Pickering, Javier Muñoz Ferrara, Jeff Kerr, Jeff Miller, Jeffrey Kuhn, Jeffrey Sander, Jens Döcke, Johannes Hupe, Johannes Manner, John David, John Relph, John Zedlewski, Jonathan Powell, Jong-Ho Shinn, Jorge Tornero, josephshin93, Joshua Ramon Enslin, José Jesús Sinohui Fernández, Julian Pfeifer, Jure Slak, József Pallagi, Jörg Lenhard, Jörg Wegner, Jörg Zieren, Jørgen Kvalsvik, Jürgen Lange, Kai Mindermann, Kai Takac, Kaique Komata, Karsten Hiekmann, Kelly Click, Koji Yokota, KOLANICH, Kolja Brix, Krunoslav Zubrinic, Krzysztof A. Kościuszkiewicz, Kyle Johnson, Laura Hernández Gómez, Lavabit, Le-wi, Lee Patton, Leonardo Haddad, Leonhard Wolz, Li Yiming, Li Zhilin, Ling Wang, Linus Dietz, Lorenzo Genta, Luciana de Melo e Abud, Luis Romero, Mairieli Wessel, Malik Atalla, Malte Deiseroth, Manuel Siebeneicher, Manuel Wtfjoke, Marco Konersmann, Mariana Prudencio, Marius Kleiner, Mark Schenk, Martin Kähmer, Martin Stolle, Martina Catizone, Mathias Walter, Matthias Geiger, Matthias Mueller, Mattia Bunel, Mattias Ulbrich, mcmoody, Meltem Demirköprü, Michael Beckmann, Michael Falkenthal, Michael Lass, Michael McCann, Michael Schwarmi, Michael Spiegel, Michael Wrighton, Michal Rican, Michel Baylac, Michel Krämer, Mihu, Mike Smoot, mohamean, Morgan Lovato, Moritz Ringler, Morten Alver, ms111ds, Mélanie Tremblay, Nadeem Mahmood, Nathan Dunn, Nathan Sheffield, Nick Mancuso, Nick S. Weatherley, Nico Schlömer, Nicolas Pavillon, Nikita Borovikov, nikmilpv, Niv Ierushalmi, Nivedha Sunderraj, Nizar N. Batada, noravanq, Olaf Lenz, Oliver Beckmann, Oliver Kopp, omer-rotem1, Oscar Gustafsson, Owen Huang, P4trice, Param Mittal, Patrick Lin, Patrick Scheibe, Paul Krappatsch, Paul Martin, pavlapp, Peter Ansell, Philip Johnson, Prasan Yapa, Predrag Milanovic, Quentin Fritz, Rachel Wu, Raik Nagel, razvan05, Renato Massao, Richard Schneeman, Robert Jäschke, Robin Lichtenthaeler, Rodrigo Paula da Silva, Rolf Starre, Ronak Lakhotia, Roy Storey, Rudolf Seemann, Rui Kang, Ruy Minoru Ito Takata, Ryo Igarashi, S M Mahbub Murshed, S. Krause, Saivert, Sam Robertson, Samin Muhammad Ridwanul Karim, Samiya Caur, Sascha Hunold, Sascha Zeller, Saulius Gražulis, Saverio Mori, Scott Pogatetz, Scott Townsend, Seb Wills, Serban Iordache, Shitikanth, shubhamatlani, Simon Harrer, Simon Rutishauser, Songyu Wang, speed9, Stanley Foerster, Stefan Feyer, Stefan Gerzmann, Stefan Kolb, Stefan Robert, Stefan Scheffel, Stefano Gariazzo, Steffin Stanly, Stephan Lau, Stephan Rave, Stephen Beitzel, Stéphane Curet, Super-Tang, Sven Jäger, systemoperator, Thiago Toledo, Thomas Arildsen, Thomas Ilsche, Thorsten Dahlheimer, Tim Kilian, Tim van Rossum, Tim Würtele, Tobias Boceck, Tobias Bouschen, Tobias Denkinger, Tobias Diez, Tony K, Toralf Senger, uid112001, Ulrich Stärk, Ulrik Stervbo, UltimaBGD, Uwe Kuehn, Valentin Pons, Victor Figueira, Victor Michelan, Vincent W. Yang, Vlad Topala, Waida Fan, Waluyo Adi Siswanto, Ward Poelmans, Wenbo Yang, wuw, Yang Zongze, Yara Grassi Gouffon, Yash Kothari, Yichen Sun, Yifan Peng, Yurick Honda, zacmks, Zeabin, Zgarbul Andrey, Zhang Liang
+developers=Oliver Kopp (since 2011), Jörg Lenhard (since 2015), Stefan Kolb (since 2015), Matthias Geiger (since 2015), Tobias Diez (since 2015), Christoph Schwentker (since 2016), Linus Dietz (since 2017), Carl Christian Snethlage (since 2020)
+azureInstrumentationKey=null
+minRequiredJavaVersion=1.8.0_171
+allowJava9=true
diff --git a/src/main/resources/META-INF/services/com.airhacks.afterburner.injection.PresenterFactory b/src/main/resources/META-INF/services/com.airhacks.afterburner.injection.PresenterFactory
index 8de06259224..98311b2a574 100644
--- a/src/main/resources/META-INF/services/com.airhacks.afterburner.injection.PresenterFactory
+++ b/src/main/resources/META-INF/services/com.airhacks.afterburner.injection.PresenterFactory
@@ -1 +1 @@
-org.jabref.gui.DefaultInjector
+org.jabref.gui.DefaultTestInjector
diff --git a/src/test/java/org/jabref/architecture/TestArchitectureTests.java b/src/test/java/org/jabref/architecture/TestArchitectureTests.java
index e7fe93d14fe..0e8112c4475 100644
--- a/src/test/java/org/jabref/architecture/TestArchitectureTests.java
+++ b/src/test/java/org/jabref/architecture/TestArchitectureTests.java
@@ -5,7 +5,6 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.function.Predicate;
@@ -27,32 +26,31 @@ public class TestArchitectureTests {
     private static final String CLASS_ORG_JABREF_UPDATE_TIMESTAMP_LISTENER_TEST = "UpdateTimestampListenerTest";
     private static final String CLASS_ORG_JABREF_ENTRY_EDITOR_TEST = "EntryEditorTest";
     private static final String CLASS_ORG_JABREF_LINKED_FILE_VIEW_MODEL_TEST = "LinkedFileViewModelTest";
+    private static final String CLASS_ORG_JABREF_SCREENSHOTS_TEST = "Screenshots";
+    private static final String CLASS_ORG_JABREF_SCREENSHOT_DARK_THEME_TEST = "ScreenshotDarkTheme";
 
     private final List<String> exceptions;
 
     public TestArchitectureTests() {
-
         // Add exceptions for the architectural test here
         // Note that bending the architectural constraints should not be done inconsiderately
-        exceptions = new ArrayList<>();
-        exceptions.add(CLASS_ORG_JABREF_PREFERENCES_TEST);
-        exceptions.add(CLASS_ORG_JABREF_PREFERENCES_MIGRATIONS_TEST);
-        exceptions.add(CLASS_ORG_JABREF_SAVE_DATABASE_ACTION_TEST);
-        exceptions.add(CLASS_ORG_JABREF_UPDATE_TIMESTAMP_LISTENER_TEST);
-        exceptions.add(CLASS_ORG_JABREF_ENTRY_EDITOR_TEST);
-        exceptions.add(CLASS_ORG_JABREF_LINKED_FILE_VIEW_MODEL_TEST);
+        exceptions = List.of(
+                CLASS_ORG_JABREF_PREFERENCES_TEST,
+                CLASS_ORG_JABREF_PREFERENCES_MIGRATIONS_TEST,
+                CLASS_ORG_JABREF_SAVE_DATABASE_ACTION_TEST,
+                CLASS_ORG_JABREF_UPDATE_TIMESTAMP_LISTENER_TEST,
+                CLASS_ORG_JABREF_ENTRY_EDITOR_TEST,
+                CLASS_ORG_JABREF_LINKED_FILE_VIEW_MODEL_TEST,
+                CLASS_ORG_JABREF_SCREENSHOTS_TEST,
+                CLASS_ORG_JABREF_SCREENSHOT_DARK_THEME_TEST);
     }
 
-    public static Stream<String[]> data() {
-        return Stream.of(
-                new String[][]{
-                        {CLASS_ORG_JABREF_PREFERENCES},
-                        {CLASS_ORG_JABREF_GLOBALS}
-                });
+    public static Stream<String> forbiddenPackages() {
+        return Stream.of(CLASS_ORG_JABREF_PREFERENCES, CLASS_ORG_JABREF_GLOBALS);
     }
 
     @ParameterizedTest
-    @MethodSource("data")
+    @MethodSource("forbiddenPackages")
     public void testsAreIndependent(String forbiddenPackage) throws IOException {
         Predicate<String> isForbiddenPackage = (s) -> s.startsWith("import " + forbiddenPackage);
         Predicate<String> isExceptionClass = (s) -> exceptions.stream().anyMatch(exception -> s.startsWith("class " + exception));
diff --git a/src/test/java/org/jabref/gui/DefaultTestInjector.java b/src/test/java/org/jabref/gui/DefaultTestInjector.java
new file mode 100644
index 00000000000..a4b60006cc7
--- /dev/null
+++ b/src/test/java/org/jabref/gui/DefaultTestInjector.java
@@ -0,0 +1,84 @@
+package org.jabref.gui;
+
+import java.util.function.Function;
+
+import javax.swing.undo.UndoManager;
+
+import org.jabref.Globals;
+import org.jabref.gui.keyboard.KeyBindingRepository;
+import org.jabref.gui.util.TaskExecutor;
+import org.jabref.logic.journals.JournalAbbreviationLoader;
+import org.jabref.logic.protectedterms.ProtectedTermsLoader;
+import org.jabref.logic.util.BuildInfo;
+import org.jabref.model.util.FileUpdateMonitor;
+import org.jabref.preferences.PreferencesService;
+
+import com.airhacks.afterburner.injection.Injector;
+import com.airhacks.afterburner.injection.PresenterFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.mockito.Mockito.mock;
+
+public class DefaultTestInjector implements PresenterFactory {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(DefaultTestInjector.class);
+
+    /**
+     * This method takes care of creating dependencies.
+     * By default, it just creates a new instance of the class.
+     * Dependencies without default constructor are constructed by hand.
+     */
+    private static Object createDependency(Class<?> clazz) {
+        if (clazz == DialogService.class) {
+            return mock(DialogService.class);
+        } else if (clazz == BuildInfo.class) {
+            return new BuildInfo("buildTest.properties");
+        } else if (clazz == TaskExecutor.class) {
+            return Globals.TASK_EXECUTOR;
+        } else if (clazz == PreferencesService.class) {
+            return Globals.prefs;
+        } else if (clazz == KeyBindingRepository.class) {
+            return Globals.getKeyPrefs();
+        } else if (clazz == JournalAbbreviationLoader.class) {
+            return Globals.journalAbbreviationLoader;
+        } else if (clazz == StateManager.class) {
+            return Globals.stateManager;
+        } else if (clazz == FileUpdateMonitor.class) {
+            return Globals.getFileUpdateMonitor();
+        } else if (clazz == ProtectedTermsLoader.class) {
+            return Globals.protectedTermsLoader;
+        } else if (clazz == ClipBoardManager.class) {
+            return Globals.clipboardManager;
+        } else if (clazz == UndoManager.class) {
+            return Globals.undoManager;
+        } else {
+            try {
+                return clazz.newInstance();
+            } catch (InstantiationException | IllegalAccessException ex) {
+                LOGGER.error("Cannot instantiate dependency: " + clazz, ex);
+                return null;
+            }
+        }
+    }
+
+    @Override
+    public <T> T instantiatePresenter(Class<T> clazz, Function<String, Object> injectionContext) {
+        LOGGER.debug("Instantiate " + clazz.getName());
+
+        // Use our own method to construct dependencies
+        Injector.setInstanceSupplier(DefaultTestInjector::createDependency);
+
+        return Injector.instantiatePresenter(clazz, injectionContext);
+    }
+
+    @Override
+    public void injectMembers(Object instance, Function<String, Object> injectionContext) {
+        LOGGER.debug("Inject into " + instance.getClass().getName());
+
+        // Use our own method to construct dependencies
+        Injector.setInstanceSupplier(DefaultTestInjector::createDependency);
+
+        Injector.injectMembers(instance, injectionContext);
+    }
+}
diff --git a/src/test/java/org/jabref/gui/ScreenshotDarkTheme.java b/src/test/java/org/jabref/gui/ScreenshotDarkTheme.java
new file mode 100644
index 00000000000..24d11cc048a
--- /dev/null
+++ b/src/test/java/org/jabref/gui/ScreenshotDarkTheme.java
@@ -0,0 +1,78 @@
+package org.jabref.gui;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Collections;
+
+import javafx.stage.Stage;
+
+import org.jabref.Globals;
+import org.jabref.JabRefException;
+import org.jabref.JabRefGUI;
+import org.jabref.JabRefMain;
+import org.jabref.gui.util.ThemeLoader;
+import org.jabref.preferences.JabRefPreferences;
+import org.jabref.testutils.category.GUITest;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.testfx.api.FxRobot;
+import org.testfx.framework.junit5.ApplicationExtension;
+import org.testfx.framework.junit5.Start;
+import org.testfx.framework.junit5.Stop;
+import org.testfx.util.DebugUtils;
+
+/**
+ * JabRef requires a restart to apply the dark theme. Thus, screenshotting is is implemented in a separate class
+ */
+@GUITest
+@ExtendWith(ApplicationExtension.class)
+class ScreenshotDarkTheme {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(ScreenshotDarkTheme.class);
+    private static final Path ROOT = Path.of("build/screenshots").toAbsolutePath();
+
+    @BeforeAll
+    static void createDirectory() throws IOException {
+        if (!Files.exists(ROOT)) {
+            Files.createDirectory(ROOT);
+        }
+    }
+
+    @Start
+    public void onStart(Stage stage) throws JabRefException {
+        final JabRefPreferences preferences = JabRefPreferences.getInstance();
+        Globals.prefs = preferences;
+        Globals.prefs.put(JabRefPreferences.FX_THEME, ThemeLoader.DARK_CSS);
+        preferences.putBoolean(JabRefPreferences.WINDOW_MAXIMISED, false);
+        preferences.putDouble(JabRefPreferences.POS_X, 0);
+        preferences.putDouble(JabRefPreferences.POS_Y, 0);
+        preferences.putDouble(JabRefPreferences.SIZE_X, 1024);
+        preferences.putDouble(JabRefPreferences.SIZE_Y, 768);
+        JabRefMain.applyPreferences(preferences);
+        Globals.startBackgroundTasks();
+        new JabRefGUI(stage, Collections.emptyList(), true);
+    }
+
+    @Stop
+    public void onStop() {
+        Globals.stopBackgroundTasks();
+    }
+
+    @Test
+    void screenshotOpenedDatabase(FxRobot robot) throws Exception {
+        StringBuilder stringBuilder = new StringBuilder();
+        Path jabrefAuthorsBib = Path.of("src/test/resources/testbib/jabref-authors.bib");
+        Path jabrefAuthorsBibSav = jabrefAuthorsBib.getParent().resolve(jabrefAuthorsBib.getFileName() + ".sav");
+        Files.deleteIfExists(jabrefAuthorsBibSav);
+        JabRefGUI.getMainFrame().getOpenDatabaseAction().openFile(jabrefAuthorsBib, true);
+        // give database some time load
+        robot.interrupt(100);
+        DebugUtils.saveScreenshot(() -> ROOT.resolve("opened-database-dark-theme.png"), "").apply(stringBuilder);
+        LOGGER.debug(stringBuilder.toString());
+    }
+}
diff --git a/src/test/java/org/jabref/gui/Screenshots.java b/src/test/java/org/jabref/gui/Screenshots.java
new file mode 100644
index 00000000000..469ae290f05
--- /dev/null
+++ b/src/test/java/org/jabref/gui/Screenshots.java
@@ -0,0 +1,111 @@
+package org.jabref.gui;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import javafx.stage.Stage;
+
+import org.jabref.Globals;
+import org.jabref.JabRefException;
+import org.jabref.JabRefGUI;
+import org.jabref.gui.help.AboutDialogView;
+import org.jabref.gui.util.BaseDialog;
+import org.jabref.preferences.JabRefPreferences;
+import org.jabref.testutils.category.GUITest;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Order;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.testfx.api.FxRobot;
+import org.testfx.api.FxToolkit;
+import org.testfx.framework.junit5.ApplicationExtension;
+import org.testfx.framework.junit5.Start;
+import org.testfx.framework.junit5.Stop;
+import org.testfx.util.DebugUtils;
+
+import static org.mockito.Mockito.mock;
+
+@GUITest
+@ExtendWith(ApplicationExtension.class)
+class Screenshots {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Screenshots.class);
+    private static final Path ROOT = Path.of("build/screenshots").toAbsolutePath();
+
+    @BeforeAll
+    static void createDirectory() throws IOException {
+        if (!Files.exists(ROOT)) {
+            Files.createDirectory(ROOT);
+        }
+    }
+
+    private static <T> void saveDialog(BaseDialog<T> dialog, Path imagePath) {
+        DebugUtils.saveWindow(dialog.getDialogPane().getScene().getWindow(), () -> imagePath, "")
+                  .apply(new StringBuilder());
+        // TODO: alternative DebugUtils.saveNode(dialog.getDialogPane(), ...)
+    }
+
+    @Stop
+    public void onStop() {
+        Globals.stopBackgroundTasks();
+    }
+
+    @Test
+    @Order(1)
+    void screenshotMainMenu() {
+        StringBuilder stringBuilder = new StringBuilder();
+        DebugUtils.saveScreenshot(() -> ROOT.resolve("main-empty.png"), "").apply(stringBuilder);
+        LOGGER.debug(stringBuilder.toString());
+    }
+
+    @Start
+    public void onStart(Stage stage) throws JabRefException {
+        final JabRefPreferences preferences = mock(JabRefPreferences.class);
+        Globals.prefs = preferences;
+        /*
+        Globals.prefs.put(JabRefPreferences.FX_THEME, ThemeLoader.MAIN_CSS);
+        preferences.putBoolean(JabRefPreferences.WINDOW_MAXIMISED, false);
+        preferences.putDouble(JabRefPreferences.POS_X, 0);
+        preferences.putDouble(JabRefPreferences.POS_Y, 0);
+        preferences.putDouble(JabRefPreferences.SIZE_X, 1024);
+        preferences.putDouble(JabRefPreferences.SIZE_Y, 768);
+        JabRefMain.applyPreferences(preferences);
+        Globals.startBackgroundTasks();
+         */
+        /*
+        JabRefFrame mainFrame = new JabRefFrame(stage);
+        mainFrame.init();
+        stage
+         */
+    }
+
+    @Test
+    @Order(2)
+    void screenshotOpenedDatabase(FxRobot robot) throws Exception {
+        StringBuilder stringBuilder = new StringBuilder();
+        Path jabrefAuthorsBib = Path.of("src/test/resources/testbib/jabref-authors.bib");
+        Path jabrefAuthorsBibSav = jabrefAuthorsBib.getParent().resolve(jabrefAuthorsBib.getFileName() + ".sav");
+        Files.deleteIfExists(jabrefAuthorsBibSav);
+        JabRefGUI.getMainFrame().getOpenDatabaseAction().openFile(jabrefAuthorsBib, true);
+        // give database some time load
+        robot.interrupt(100);
+        DebugUtils.saveScreenshot(() -> ROOT.resolve("opened-database.png"), "").apply(stringBuilder);
+        LOGGER.debug(stringBuilder.toString());
+    }
+
+    @Test
+    @Order(2)
+    void screenshotAboutDialog(FxRobot robot) throws Exception {
+        AboutDialogView aboutDialog = FxToolkit.setupFixture(() -> {
+            AboutDialogView dialog = new AboutDialogView();
+            dialog.show();
+            return dialog;
+        });
+        robot.sleep(200);
+        robot.interact(() -> saveDialog(aboutDialog, ROOT.resolve("aboutdialog.png")));
+    }
+}
diff --git a/src/test/resources/META-INF/services2/com.airhacks.afterburner.injection.PresenterFactory b/src/test/resources/META-INF/services2/com.airhacks.afterburner.injection.PresenterFactory
new file mode 100644
index 00000000000..98311b2a574
--- /dev/null
+++ b/src/test/resources/META-INF/services2/com.airhacks.afterburner.injection.PresenterFactory
@@ -0,0 +1 @@
+org.jabref.gui.DefaultTestInjector