optimized tests and some code docu

src/main/java/org/cryptomator/ui/error/ErrorController.java

@@ -152,6 +152,14 @@ public class ErrorController implements FxController {
 		}
 	}
 
+	/**
+	 * Checks if an ErrorDiscussion object is a partial match based on the presence of the error code's method code in its title.
+	 *
+	 * @param errorDiscussion The ErrorDiscussion object to be checked.
+	 * @return A boolean value indicating if the ErrorDiscussion object is a partial match:
+	 *         - true if the object's title contains the error code's method code,
+	 *         - false otherwise.
+	 */
 	public boolean isPartialMatchFilter(ErrorDiscussion errorDiscussion) {
 		return errorDiscussion.title.contains(" " + errorCode.methodCode());
 	}

src/test/java/org/cryptomator/ui/error/ErrorControllerTest.java

@@ -55,23 +55,13 @@ class ErrorControllerTest {
 	@CsvSource(textBlock = """
 		10, 5, -1 
 		8, 15, 1 
+		10, 10, 0
 		""")
-	public void testCompareUpvoteCount1(int leftUpvoteCount, int rightUpvoteCount, int expectedResult) {
+	public void testCompareUpvoteCount(int leftUpvoteCount, int rightUpvoteCount, int expectedResult) {
 		var left = createErrorDiscussion("", leftUpvoteCount, null);
 		var right = createErrorDiscussion("", rightUpvoteCount, null);
 		int result = errorController.compareUpvoteCount(left, right);
-		Assertions.assertTrue(result*expectedResult>0);
-	}
-
-	@ParameterizedTest
-	@CsvSource(textBlock = """
-		10, 10 
-		""")
-	public void testCompareUpvoteCount2(int leftUpvoteCount, int rightUpvoteCount) {
-		var left = createErrorDiscussion("", leftUpvoteCount, null);
-		var right = createErrorDiscussion("", rightUpvoteCount, null);
-		int result = errorController.compareUpvoteCount(left, right);
-		Assertions.assertEquals(0,result);
+		Assertions.assertEquals(expectedResult,Integer.signum(result));
 	}
 
 	@ParameterizedTest