Fixed exception comparing versions

Author: depryf

src/main/java/com/imsweb/naaccrxml/SpecificationVersion.java

@@ -3,6 +3,8 @@
  */
 package com.imsweb.naaccrxml;
 
+import java.util.Objects;
+
 import org.apache.commons.lang3.StringUtils;
 
 public final class SpecificationVersion {
@@ -46,6 +48,9 @@ public static boolean isSpecificationSupported(String spec) {
      * @return negative integer if first version is smaller, 0 if they are the same, positive integer otherwise
      */
     public static int compareSpecifications(String spec1, String spec2) {
+        if (StringUtils.isBlank(spec1) || !isSpecificationSupported(spec1) || StringUtils.isBlank(spec2) || !isSpecificationSupported(spec2))
+            return Objects.compare(spec1, spec2, String::compareTo);
+        
         String[] parts1 = StringUtils.split(spec1, '.');
         Integer major1 = Integer.valueOf(parts1[0]);
         Integer minor1 = Integer.valueOf(parts1[1]);

src/test/java/com/imsweb/naaccrxml/SpecificationVersionTest.java

@@ -44,6 +44,10 @@ public void testCompareVersions() {
         Assert.assertEquals(1, SpecificationVersion.compareSpecifications("2.1", "1.0"));
         Assert.assertEquals(-1, SpecificationVersion.compareSpecifications("1.2", "2.1"));
         Assert.assertEquals(1, SpecificationVersion.compareSpecifications("2.1", "1.2"));
+
+        Assert.assertEquals(2, SpecificationVersion.compareSpecifications("1.0", "1"));
+        Assert.assertEquals(-2, SpecificationVersion.compareSpecifications("1", "1.0"));
+        Assert.assertEquals(0, SpecificationVersion.compareSpecifications("1", "1"));
     }
 
     @Test