Merge pull request #14 from bosschaert/SLING-10404

SLING-10404 Log: 'No Configuration Admin API available' when it is available
diff --git a/src/main/java/org/apache/sling/feature/apiregions/impl/RegionConfiguration.java b/src/main/java/org/apache/sling/feature/apiregions/impl/RegionConfiguration.java
index acb7720..d94cd6b 100644
--- a/src/main/java/org/apache/sling/feature/apiregions/impl/RegionConfiguration.java
+++ b/src/main/java/org/apache/sling/feature/apiregions/impl/RegionConfiguration.java
@@ -265,8 +265,8 @@
         for(final String val : convert(valObj)) {
             final String[] parts = val.split("=");
             final String n = parts[0];
-            final String[] features = parts[1].split(",");
-            addValuesToMap(map, n, Arrays.asList(features), constructor);
+            final List<String> features = parts.length == 1 ? Collections.emptyList() : Arrays.asList(parts[1].split(","));
+            addValuesToMap(map, n, features, constructor);
         }
     }
 
diff --git a/src/test/java/org/apache/sling/feature/apiregions/impl/RegionConfigurationTest.java b/src/test/java/org/apache/sling/feature/apiregions/impl/RegionConfigurationTest.java
index db3ca70..0ff9c9a 100644
--- a/src/test/java/org/apache/sling/feature/apiregions/impl/RegionConfigurationTest.java
+++ b/src/test/java/org/apache/sling/feature/apiregions/impl/RegionConfigurationTest.java
@@ -180,6 +180,20 @@
                 re.bundleFeatureMap.get("org.sling:b2:1"));
         assertEquals(new HashSet<>(Arrays.asList("some.other:feature:123", "org.sling:something:1.2.3:slingosgifeature:myclassifier")),
                 re.bundleFeatureMap.get("org.sling:b3:1"));
+
+        // add a config with an empty feature list
+        props.put(RegionConstants.PROP_bundleFeatures, "g3:b3:2.7=");
+        re.setConfig("new.config", props);
+
+        assertEquals(4, re.bundleFeatureMap.size());
+        assertEquals(Collections.emptySet(),
+            re.bundleFeatureMap.get("g3:b3:2.7"));
+        assertEquals(Collections.singleton("org.sling:something:1.2.3:slingosgifeature:myclassifier"),
+            re.bundleFeatureMap.get("org.sling:b1:1"));
+        assertEquals(Collections.singleton("org.sling:something:1.2.3:slingosgifeature:myclassifier"),
+            re.bundleFeatureMap.get("org.sling:b2:1"));
+        assertEquals(new HashSet<>(Arrays.asList("some.other:feature:123", "org.sling:something:1.2.3:slingosgifeature:myclassifier")),
+            re.bundleFeatureMap.get("org.sling:b3:1"));
     }
 
     @Test