PDFBOX-5660: Sonar fix

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1935303 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

pdfbox/src/test/java/org/apache/pdfbox/pdmodel/common/function/type4/TestOperators.java

@@ -19,7 +19,6 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.fail;
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.parallel.Execution;
@@ -182,15 +181,7 @@ void testIDiv()
         Type4Tester.create("3 2 idiv").pop(1).isEmpty();
         Type4Tester.create("4 2 idiv").pop(2).isEmpty();
         Type4Tester.create("-5 2 idiv").pop(-2).isEmpty();
-        try
-        {
-            Type4Tester.create("4.4 2 idiv");
-            fail("Expected typecheck");
-        }
-        catch (ClassCastException cce)
-        {
-            //expected
-        }
+        assertThrows(ClassCastException.class, () -> Type4Tester.create("4.4 2 idiv"), "Expected typecheck");
     }
 
     /**
@@ -224,15 +215,7 @@ void testMod()
         Type4Tester.create("5 3 mod").pop(2).isEmpty();
         Type4Tester.create("5 2 mod").pop(1).isEmpty();
         Type4Tester.create("-5 3 mod").pop(-2).isEmpty();
-        try
-        {
-            Type4Tester.create("4.4 2 mod");
-            fail("Expected typecheck");
-        }
-        catch (ClassCastException cce)
-        {
-            //expected
-        }
+        assertThrows(ClassCastException.class, () -> Type4Tester.create("4.4 2 mod"), "Expected typecheck");
     }
 
     /**