Add config validator tests & Improve mkvtoolnix error logging & ConfigPathValidator

src/test/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/util/TestUtil.java

@@ -1,6 +1,8 @@
 package at.pcgamingfreaks.mkvaudiosubtitlechanger.util;
 
+import at.pcgamingfreaks.mkvaudiosubtitlechanger.config.ValidationResult;
 import at.pcgamingfreaks.mkvaudiosubtitlechanger.model.ConfigProperty;
+import org.junit.jupiter.params.provider.Arguments;
 
 import java.util.Arrays;
 
@@ -13,4 +15,14 @@ public class TestUtil {
                 .collect(joining("\n", "  - ", ""));
     }
 
+    public static <T> Arguments argumentsOf(ConfigProperty property, boolean required, T defaultValue, String yaml, String[] cmd,
+                                           ValidationResult result) {
+        return Arguments.of(property, required, defaultValue, yaml, cmd, result);
+    }
+
+    public static Arguments argumentsOf(ConfigProperty property, boolean required, boolean append, String yaml, String[] cmd,
+                                            ValidationResult result, int expectedSize) {
+        return Arguments.of(property, required, append, yaml, cmd, result, expectedSize);
+    }
+
 }