Issue 484 (#485)

* added Integer argument constructor for IntegerType class.

* Updating release notes

RELEASE_NOTES.md

@@ -1 +1,3 @@
+* Issue 484 https://github.com/hapifhir/org.hl7.fhir.core/issues/484
 * Update core R5 code to v4.6.0 (breaking changes to questionnaire, concept map, and other resources that are less important to core)
+

org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/model/IntegerType.java

@@ -30,10 +30,8 @@ package org.hl7.fhir.r5.model;
  */
 
 
-
-import org.hl7.fhir.instance.model.api.IBaseIntegerDatatype;
-
 import ca.uhn.fhir.model.api.annotation.DatatypeDef;
+import org.hl7.fhir.instance.model.api.IBaseIntegerDatatype;
 
 /**
  * Primitive type "integer" in FHIR: A signed 32-bit integer
@@ -57,13 +55,18 @@ public class IntegerType extends PrimitiveType<Integer> implements IBaseIntegerD
     setValue(theInteger);
   }
 
+  /**
+   * Constructor
+   */
+  public IntegerType(Integer theInteger) {
+    setValue(theInteger);
+  }
+
   /**
    * Constructor
    *
-	 * @param theIntegerAsString
+   * @param theIntegerAsString A string representation of an integer
-	 *            A string representation of an integer
+   * @throws IllegalArgumentException If the string is not a valid integer representation
-	 * @throws IllegalArgumentException
-	 *             If the string is not a valid integer representation
    */
   public IntegerType(String theIntegerAsString) {
     setValueAsString(theIntegerAsString);
@@ -101,6 +104,7 @@ public class IntegerType extends PrimitiveType<Integer> implements IBaseIntegerD
 
   @Override
   public IntegerType copy() {
+//    IntegerType ret = getValue() == null ? new IntegerType() : new IntegerType(getValue());
     IntegerType ret = new IntegerType(getValue());
     copyValues(ret);
     return ret;

org.hl7.fhir.r5/src/test/java/org/hl7/fhir/r5/model/IntegerTypeTest.java

@@ -0,0 +1,24 @@
+package org.hl7.fhir.r5.model;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class IntegerTypeTest {
+
+  @Test
+  @DisplayName("Test that non-initialized Integer value doesn't cause crash on copy()")
+  public void testNullIntegerType() {
+    IntegerType intType = new IntegerType();
+    IntegerType intType2 = intType.copy();
+    Assertions.assertNull(intType2.getValue());
+  }
+
+  @Test
+  @DisplayName("Test that initialized with null Integer value doesn't cause crash on copy()")
+  public void testNullIntegerTypeString() {
+    IntegerType intType = new IntegerType((String) null);
+    IntegerType intType2 = intType.copy();
+    Assertions.assertNull(intType2.getValue());
+  }
+}