From 474d1e2bfa58c6d42263d233cae3459fbab03322 Mon Sep 17 00:00:00 2001
From: Steve Springett <steve@springett.us>
Date: Tue, 7 Nov 2023 22:58:18 -0600
Subject: [PATCH] Resolved NPE and updated unit tests

---
 src/main/java/com/github/packageurl/PackageURL.java     | 2 +-
 src/test/java/com/github/packageurl/PackageURLTest.java | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/github/packageurl/PackageURL.java b/src/main/java/com/github/packageurl/PackageURL.java
index d4c05f0..1872e47 100644
--- a/src/main/java/com/github/packageurl/PackageURL.java
+++ b/src/main/java/com/github/packageurl/PackageURL.java
@@ -211,7 +211,7 @@ public String getVersion() {
      * @since 1.0.0
      */
     public Map<String, String> getQualifiers() {
-        return Collections.unmodifiableMap(qualifiers);
+        return (qualifiers != null)? Collections.unmodifiableMap(qualifiers) : null;
     }
 
     /**
diff --git a/src/test/java/com/github/packageurl/PackageURLTest.java b/src/test/java/com/github/packageurl/PackageURLTest.java
index 4f38b16..51715eb 100644
--- a/src/test/java/com/github/packageurl/PackageURLTest.java
+++ b/src/test/java/com/github/packageurl/PackageURLTest.java
@@ -92,7 +92,9 @@ public void testConstructorParsing() throws Exception {
             Assert.assertEquals(name, purl.getName());
             Assert.assertEquals(version, purl.getVersion());
             Assert.assertEquals(subpath, purl.getSubpath());
-            if (qualifiers != null) {
+            if (qualifiers == null) {
+                Assert.assertNull(purl.getQualifiers());
+            } else {
                 Assert.assertNotNull(purl.getQualifiers());
                 Assert.assertEquals(qualifiers.length(), purl.getQualifiers().size());
                 qualifiers.keySet().forEach((key) -> {