diff --git a/src/test/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/impl/processors/CoherentAttributeUpdaterTest.java b/src/test/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/impl/processors/CoherentAttributeUpdaterTest.java
index 7f808c9..08ef0e5 100644
--- a/src/test/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/impl/processors/CoherentAttributeUpdaterTest.java
+++ b/src/test/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/impl/processors/CoherentAttributeUpdaterTest.java
@@ -21,19 +21,17 @@ import java.lang.reflect.Method;
 import java.util.*;
 import java.util.stream.Stream;
 
+import static at.pcgamingfreaks.mkvaudiosubtitlechanger.util.PathUtils.TEST_DIR;
 import static at.pcgamingfreaks.mkvaudiosubtitlechanger.util.TrackAttributeUtil.*;
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.mockito.Mockito.when;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
 
 @ExtendWith(MockitoExtension.class)
 class CoherentAttributeUpdaterTest {
     @Mock(lenient = true)
     FileProcessor fileProcessor;
 
-    @Test
-    void process() {
-    }
-
     private static Stream<Arguments> findMatch() {
         return Stream.of(
                 Arguments.of(AttributeConfig.of("ger", "ger"),
@@ -91,4 +89,129 @@ class CoherentAttributeUpdaterTest {
         fileInfo.addTracks(List.of(tracks));
         return Pair.of(file, fileInfo);
     }
+
+    private static Stream<Arguments> process() {
+        return Stream.of(
+                Arguments.of(
+                        arr(a("ger:ger")), a("ger:ger"),
+                        List.of(
+                                List.of(AUDIO_GER, SUB_GER),
+                                List.of(AUDIO_GER, SUB_GER)
+                        ),
+                        List.of(
+                                Map.ofEntries(on(AUDIO_GER), on(SUB_GER)),
+                                Map.ofEntries(on(AUDIO_GER), on(SUB_GER))
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        )
+                ),
+                Arguments.of(
+                        arr(a("eng:eng"), a("ger:ger")), a("ger:ger"),
+                        List.of(
+                                List.of(SUB_ENG, AUDIO_GER, SUB_GER),
+                                List.of(AUDIO_ENG, SUB_ENG, AUDIO_GER, SUB_GER)
+                        ),
+                        List.of(
+                                Map.ofEntries(on(AUDIO_GER), on(SUB_GER)),
+                                Map.ofEntries(on(AUDIO_GER), on(SUB_GER))
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        )
+                ),
+                Arguments.of(
+                        arr(a("eng:eng"), a("ger:ger")), a("eng:eng"),
+                        List.of(
+                                List.of(AUDIO_ENG, withName(SUB_ENG, "SDH"), AUDIO_GER, SUB_GER),
+                                List.of(AUDIO_ENG, SUB_ENG, AUDIO_GER, SUB_GER)
+                        ),
+                        List.of(
+                                Map.ofEntries(on(AUDIO_ENG), on(withName(SUB_ENG, "SDH"))),
+                                Map.ofEntries(on(AUDIO_ENG), on(SUB_ENG))
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        ),
+                        List.of(
+                                Map.ofEntries(),
+                                Map.ofEntries()
+                        ),
+                        List.of(
+                                Map.ofEntries(on(withName(SUB_ENG, "SDH"))),
+                                Map.ofEntries()
+                        )
+                )
+        );
+    }
+
+    @ParameterizedTest
+    @MethodSource("process")
+    void process(AttributeConfig[] attributeConfigs, AttributeConfig expectedMatch,
+                 List<List<TrackAttributes>> tracks,
+                 List<Map<TrackAttributes, Boolean>> defaultExp,
+                 List<Map<TrackAttributes, Boolean>> forcedExp,
+                 List<Map<TrackAttributes, Boolean>> commentaryExp,
+                 List<Map<TrackAttributes, Boolean>> hearingImpairedExp) {
+        InputConfig config = new InputConfig();
+        config.setThreads(1);
+        config.setSafeMode(true);
+        config.setAttributeConfig(attributeConfigs);
+        FileProcessor fileProcessor = spy(FileProcessor.class);
+
+        List<File> testMkvFiles = new ArrayList<>();
+        List<FileInfo> testFileInfo = new ArrayList<>();
+        for (int i = 0; i < tracks.size(); i++) {
+            List<TrackAttributes> tracks1 = tracks.get(i);
+            File file = new File(TEST_DIR + i);
+            FileInfo fileInfo = new FileInfo(file);
+            fileInfo.addTracks(tracks1);
+            doReturn(fileInfo).when(fileProcessor).readAttributes(file);
+
+            testMkvFiles.add(file);
+            testFileInfo.add(fileInfo);
+        }
+        doReturn(testMkvFiles).when(fileProcessor).loadFiles(any());
+
+        AttributeChangeProcessor attributeChangeProcessor = new AttributeChangeProcessor(new String[]{"pref"}, Set.of("forced"), Set.of("commentary"), Set.of("SDH"));
+        CoherentAttributeUpdater underTest = new CoherentAttributeUpdater(config, fileProcessor, attributeChangeProcessor);
+
+        underTest.process(new File(""));
+
+        for (int i = 0; i < testFileInfo.size(); i++) {
+            FileInfo fileInfo = testFileInfo.get(i);
+            assertEquals(expectedMatch, fileInfo.getMatchedConfig());
+            assertEquals(fileInfo.getChanges().getDefaultTrack().size(), defaultExp.get(i).size());
+            defaultExp.get(i).forEach((key, val) -> assertEquals(val, fileInfo.getChanges().getDefaultTrack().get(key), "Default track flag"));
+
+            assertEquals(fileInfo.getChanges().getForcedTrack().size(), forcedExp.get(i).size());
+            forcedExp.get(i).forEach((key, val) -> assertEquals(val, fileInfo.getChanges().getForcedTrack().get(key), "Forced track flag"));
+
+            assertEquals(fileInfo.getChanges().getCommentaryTrack().size(), commentaryExp.get(i).size());
+            commentaryExp.get(i).forEach((key, val) -> assertEquals(val, fileInfo.getChanges().getCommentaryTrack().get(key), "Commentary track flag"));
+
+            assertEquals(fileInfo.getChanges().getHearingImpairedTrack().size(), hearingImpairedExp.get(i).size());
+            hearingImpairedExp.get(i).forEach((key, val) -> assertEquals(val, fileInfo.getChanges().getHearingImpairedTrack().get(key), "Hearing Impaired track flag"));
+        }
+
+    }
 }
\ No newline at end of file