style: sonarqube issues

Signed-off-by: Thibault Meyer <meyer.thibault@gmail.com>

Author: thibaultmeyer

src/main/java/io/github/thibaultmeyer/cuid/CUID.java

@@ -119,7 +119,9 @@ public static boolean isValid(final String cuidAsString) {
             && (cuidAsString.length() == CUIDv1.LENGTH_STANDARD && cuidAsString.startsWith(CUIDv1.START_CHARACTER) // Version 1
             || (!cuidAsString.isEmpty())) // Version 2
             && cuidAsString.chars()
-            .filter(c -> !((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'))).findAny().isEmpty();
+            .filter(c -> !((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')))
+            .findAny()
+            .isEmpty();
     }
 
     /**

src/test/java/io/github/thibaultmeyer/cuid/HistogramTest.java

@@ -1,5 +1,6 @@
 package io.github.thibaultmeyer.cuid;
 
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.MethodOrderer;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestMethodOrder;
@@ -30,6 +31,7 @@ void histogramCUIDv1() {
         final Map<Integer, Integer> frequencies = histogram.histogram(20);
 
         // Assert
+        Assertions.assertNotNull(frequencies);
         System.out.println("CUID v1: " + frequencies);
     }
 
@@ -48,6 +50,7 @@ void histogramCUIDv2() {
         final Map<Integer, Integer> frequencies = histogram.histogram(20);
 
         // Assert
+        Assertions.assertNotNull(frequencies);
         System.out.println("CUID v2: " + frequencies);
     }
 

src/test/java/io/github/thibaultmeyer/cuid/PerformanceTest.java

@@ -14,7 +14,7 @@
 final class PerformanceTest {
 
     @BeforeAll
-    public static void beforeAll() {
+    static void beforeAll() {
 
         System.gc();
     }