Fix PdfASigningTest and NewLineTest

DEVSIX-6491

Author: Eugene Bochilo

layout/src/test/java/com/itextpdf/layout/NewLineTest.java

@@ -118,6 +118,6 @@ private void test(String newlineCharacters, String fileName) throws IOException,
         document.add(paragraph);
         document.close();
 
-        Assert.assertNull(new CompareTool().compareVisually(outFileName, cmpFileName, destinationFolder, diffPrefix));
+        Assert.assertNull(new CompareTool().compareByContent(outFileName, cmpFileName, destinationFolder, diffPrefix));
     }
 }

sign/src/test/java/com/itextpdf/signatures/sign/PdfASigningTest.java

@@ -127,7 +127,7 @@ public void simpleSigningTest() throws GeneralSecurityException, IOException, In
         Assert.assertNull(new VeraPdfValidator().validate(dest));
         Assert.assertNull(SignaturesCompareTool.compareSignatures(dest, sourceFolder + "cmp_" + fileName));
         Assert.assertNull(new CompareTool().compareVisually(dest, sourceFolder + "cmp_" + fileName, destinationFolder,
-                "diff_", getTestMap(new Rectangle(67, 575, 155, 15))));
+                "diff_", getTestMap(new Rectangle(27, 550, 195, 40))));
     }
 
     @Test