Add LongRange.toLongStream()

src/changes/changes.xml

@@ -63,6 +63,7 @@ The <action> type attribute can be add,update,fix,remove.
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add JavaVersion.JAVA_23.</action>
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add SystemUtils.IS_JAVA_23.</action>
     <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add IntegerRange.toIntStream().</action>
+    <action                   type="add" dev="ggregory" due-to="Gary Gregory">Add LongRange.toLongStream().</action>
     <!-- UPDATE -->
     <action                   type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.apache.commons:commons-parent from 73 to 77 #1267, #1277, #1283, #1288.</action>
   </release>

src/main/java/org/apache/commons/lang3/LongRange.java

@@ -17,6 +17,8 @@
 
 package org.apache.commons.lang3;
 
+import java.util.stream.LongStream;
+
 /**
  * Specializes {@link NumberRange} for {@link Long}s.
  *
@@ -70,7 +72,7 @@ public final class LongRange extends NumberRange<Long> {
     }
 
     /**
-     * Creates an instance.
+     * Creates a new instance.
      *
      * @param number1 the first element, not null
      * @param number2 the second element, not null
@@ -81,4 +83,15 @@ public final class LongRange extends NumberRange<Long> {
         super(number1, number2, null);
     }
 
+    /**
+     * Returns a sequential ordered {@code LongStream} from {@link #getMinimum()} (inclusive) to {@link #getMaximum()} (inclusive) by an incremental step of
+     * {@code 1}.
+     *
+     * @return a sequential {@code LongStream} for the range of {@code long} elements
+     * @since 3.18.0
+     */
+    public LongStream toLongStream() {
+        return LongStream.rangeClosed(getMinimum(), getMaximum());
+    }
+
 }

src/test/java/org/apache/commons/lang3/LongRangeTest.java

@@ -26,6 +26,7 @@ import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.util.Comparator;
+import java.util.stream.LongStream;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -409,6 +410,13 @@ public class LongRangeTest extends AbstractLangTest {
         SerializationUtils.clone(range1);
     }
 
+    @Test
+    public void testToIntStream() {
+        try (LongStream stream = range1.toLongStream()) {
+            assertEquals(165, stream.sum());
+        }
+    }
+
     @Test
     public void testToString() {
         assertNotNull(range1.toString());