Refactor to meet line length standard

src/main/java/org/jabref/logic/util/strings/StringSimilarity.java

@@ -1,9 +1,9 @@
 package org.jabref.logic.util.strings;
 
-import java.util.Locale;
-
 import info.debatty.java.stringsimilarity.Levenshtein;
 
+import java.util.Locale;
+
 public class StringSimilarity {
     private final Levenshtein METRIC_DISTANCE = new Levenshtein();
     // edit distance threshold for entry title comparison
@@ -22,6 +22,8 @@ public boolean isSimilar(String a, String b) {
 
     public double editDistanceIgnoreCase(String a, String b) {
         // TODO: Locale is dependent on the language of the strings. English is a good denominator.
-        return METRIC_DISTANCE.distance(a.toLowerCase(Locale.ENGLISH), b.toLowerCase(Locale.ENGLISH));
+        a = a.toLowerCase(Locale.ENGLISH);
+        b = b.toLowerCase(Locale.ENGLISH);
+        return METRIC_DISTANCE.distance(a, b);
     }
 }

src/test/java/org/jabref/logic/util/strings/StringSimilarityTest.java

@@ -0,0 +1,53 @@
+package org.jabref.logic.util.strings;
+
+import org.junit.Test;
+import org.junit.Before;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class StringSimilarityTest {
+
+    private StringSimilarity sut;
+
+    @Before
+    public void setup() {
+        sut = new StringSimilarity();
+    }
+
+    @Test
+    public void givenIdenticalStrings_whenIsSimilarMethod_thenReturnTrue() {
+        String a = "Hello";
+        String b = "Hello";
+        assertTrue(sut.isSimilar(a, b));
+    }
+
+    @Test
+    public void givenIdenticalStrings_whenEditDistanceIgnoreCaseMethod_thenReturnZero() {
+        String a = "A";
+        String b = "A";
+        assertEquals(0.0, sut.editDistanceIgnoreCase(a, b));
+    }
+
+    @Test
+    public void givenSlightlyDifferentStrings_whenEditDistanceIgnoreCaseMethod_thenReturnLevenshteinDistance() {
+        String a = "Abc";
+        String b = "Bbc";
+        assertEquals(1.0, sut.editDistanceIgnoreCase(a,b));
+    }
+
+    @Test
+    public void givenVeryDifferentStrings_whenEditDistanceIgnoreCaseMethod_thenReturnLevenshteinDistance() {
+        String a = "Fish";
+        String b = "Bears";
+        assertEquals(5.0, sut.editDistanceIgnoreCase(a,b));
+    }
+
+    @Test
+    public void givenDissimilarStrings_whenIsSimilarMethod_thenReturnFalse() {
+        String a = "Johnson";
+        String b = "Daghtsen";
+        System.out.println(sut.editDistanceIgnoreCase(a,b));
+        assertFalse(sut.isSimilar(a,b));
+    }
+
+}