From 93c4ec418ea23647c6d88cd5d7899915cadc2cc0 Mon Sep 17 00:00:00 2001
From: Elliotte Rusty Harold <elharo@ibiblio.org>
Date: Wed, 1 Jul 2026 10:05:51 -0400
Subject: [PATCH] Os.getOsFamily: return empty string instead of null

---
 src/main/java/org/apache/maven/shared/utils/Os.java     | 2 +-
 src/test/java/org/apache/maven/shared/utils/OsTest.java | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/main/java/org/apache/maven/shared/utils/Os.java b/src/main/java/org/apache/maven/shared/utils/Os.java
index 179e110d..121ec0f6 100644
--- a/src/main/java/org/apache/maven/shared/utils/Os.java
+++ b/src/main/java/org/apache/maven/shared/utils/Os.java
@@ -365,7 +365,7 @@ private static String getOsFamily() {
                 return fam;
             }
         }
-        return null;
+        return "";
     }
 
     /**
diff --git a/src/test/java/org/apache/maven/shared/utils/OsTest.java b/src/test/java/org/apache/maven/shared/utils/OsTest.java
index e524191e..297db7f3 100644
--- a/src/test/java/org/apache/maven/shared/utils/OsTest.java
+++ b/src/test/java/org/apache/maven/shared/utils/OsTest.java
@@ -26,6 +26,7 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
@@ -112,6 +113,11 @@ public void testGetValidFamilies() {
         assertTrue(osFamilies.contains(Os.FAMILY_ZOS));
     }
 
+    @Test
+    public void testOsFamilyNotNull() {
+        assertNotNull(Os.OS_FAMILY);
+    }
+
     @Test
     public void testIsArch() {
         assertTrue(Os.isArch("i386"), "Arch is i386");