diff --git a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/RemoveHyphenatedNewlinesFormatterTest.java b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/RemoveHyphenatedNewlinesFormatterTest.java
index 4eda529c941..01047bbc425 100644
--- a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/RemoveHyphenatedNewlinesFormatterTest.java
+++ b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/RemoveHyphenatedNewlinesFormatterTest.java
@@ -2,6 +2,8 @@
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
@@ -14,11 +16,10 @@ void setUp() {
         formatter = new RemoveHyphenatedNewlinesFormatter();
     }
 
-    @Test
-    void removeHyphensBeforeNewlines() {
-        assertEquals("water", formatter.format("wa-\nter"));
-        assertEquals("water", formatter.format("wa-\r\nter"));
-        assertEquals("water", formatter.format("wa-\rter"));
+    @ParameterizedTest
+    @ValueSource(strings = {"wa-\nter", "wa-\r\nter", "wa-\rter"})
+    void removeHyphensBeforeNewlines(String expression) {
+        assertEquals("water", formatter.format(expression));
     }
 
     @Test
diff --git a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/TrimWhitespaceFormatterTest.java b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/TrimWhitespaceFormatterTest.java
index 137e4e52bf0..9e264ff51a2 100644
--- a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/TrimWhitespaceFormatterTest.java
+++ b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/TrimWhitespaceFormatterTest.java
@@ -1,7 +1,8 @@
 package org.jabref.logic.formatter.bibtexfields;
 
 import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
@@ -14,45 +15,39 @@ void setUp() {
         formatter = new TrimWhitespaceFormatter();
     }
 
-    @Test
-    void removeHorizontalTabulations() {
-        assertEquals("whitespace", formatter.format("\twhitespace"));
-        assertEquals("whitespace", formatter.format("whitespace\t"));
-        assertEquals("whitespace", formatter.format("\twhitespace\t\t"));
-    }
-
-    @Test
-    void removeLineFeeds() {
-        assertEquals("whitespace", formatter.format("\nwhitespace"));
-        assertEquals("whitespace", formatter.format("whitespace\n"));
-        assertEquals("whitespace", formatter.format("\nwhitespace\n\n"));
-    }
-
-    @Test
-    void removeFormFeeds() {
-        assertEquals("whitespace", formatter.format("\fwhitespace"));
-        assertEquals("whitespace", formatter.format("whitespace\f"));
-        assertEquals("whitespace", formatter.format("\fwhitespace\f\f"));
-    }
-
-    @Test
-    void removeCarriageReturnFeeds() {
-        assertEquals("whitespace", formatter.format("\rwhitespace"));
-        assertEquals("whitespace", formatter.format("whitespace\r"));
-        assertEquals("whitespace", formatter.format("\rwhitespace\r\r"));
-    }
-
-    @Test
-    void removeSeparatorSpaces() {
-        assertEquals("whitespace", formatter.format(" whitespace"));
-        assertEquals("whitespace", formatter.format("whitespace "));
-        assertEquals("whitespace", formatter.format(" whitespace  "));
-    }
-
-    @Test
-    void removeMixedWhitespaceChars() {
-        assertEquals("whitespace", formatter.format(" \r\t\fwhitespace"));
-        assertEquals("whitespace", formatter.format("whitespace \n \r"));
-        assertEquals("whitespace", formatter.format("   \f\t whitespace  \r \n"));
+    @ParameterizedTest
+    @ValueSource(strings = {
+            // remove horizontal tabulation
+            "\twhitespace",
+            "whitespace\t",
+            "\twhitespace\t\t",
+
+            // remove line feeds
+            "\nwhitespace",
+            "whitespace\n",
+            "\nwhitespace\n\n",
+
+            // remove form feeds
+            "\fwhitespace",
+            "whitespace\f",
+            "\fwhitespace\f\f",
+
+            // remove carriage returns
+            "\rwhitespace",
+            "whitespace\r",
+            "\rwhitespace\r\r",
+
+            // remove spaces
+            " whitespace",
+            "whitespace ",
+            " whitespace  ",
+
+            // remove combinations
+            " \r\t\fwhitespace",
+            "whitespace \n \r",
+            "   \f\t whitespace  \r \n",
+    })
+    void removeBlankCharacters(String expression) {
+        assertEquals("whitespace", formatter.format(expression));
     }
 }
diff --git a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnicodeConverterTest.java b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnicodeConverterTest.java
index 12d8177ce79..2602ac25f50 100644
--- a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnicodeConverterTest.java
+++ b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnicodeConverterTest.java
@@ -2,6 +2,8 @@
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
@@ -22,16 +24,18 @@ void basic() {
         assertEquals("aaa", formatter.format("aaa"));
     }
 
-    @Test
-    void unicodeCombiningAccents() {
-        assertEquals("{\\\"{a}}", formatter.format("a\u0308"));
-        assertEquals("{\\\"{a}}b", formatter.format("a\u0308b"));
-    }
-
-    @Test
-    void unicode() {
-        assertEquals("{\\\"{a}}", formatter.format("ä"));
-        assertEquals("{{$\\Epsilon$}}", formatter.format("\u0395"));
+    @ParameterizedTest
+    @CsvSource({
+            // combining accents
+            "{\\\"{a}}, a\u0308",
+            "{\\\"{a}}b, a\u0308b",
+
+            // plain unicode letters
+            "{\\\"{a}}, ä",
+            "{{$\\Epsilon$}}, \u0395"
+    })
+    void unicode(String expected, String text) {
+        assertEquals(expected, formatter.format(text));
     }
 
     @Test
diff --git a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnitsToLatexFormatterTest.java b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnitsToLatexFormatterTest.java
index 7ee0ce1899c..0ba17a3488b 100644
--- a/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnitsToLatexFormatterTest.java
+++ b/jablib/src/test/java/org/jabref/logic/formatter/bibtexfields/UnitsToLatexFormatterTest.java
@@ -2,6 +2,8 @@
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
@@ -17,10 +19,10 @@ void setUp() {
         formatter = new UnitsToLatexFormatter();
     }
 
-    @Test
-    void test() {
-        assertEquals("1~{A}", formatter.format("1 A"));
-        assertEquals("1\\mbox{-}{mA}", formatter.format("1-mA"));
+    @ParameterizedTest
+    @CsvSource({"1~{A}, 1 A", "1\\mbox{-}{mA}, 1-mA"})
+    void test(String expected, String text) {
+        assertEquals(expected, formatter.format(text));
     }
 
     @Test