diff --git a/solrdf/pom.xml b/solrdf/pom.xml
index c840914..ab5c0b2 100644
--- a/solrdf/pom.xml
+++ b/solrdf/pom.xml
@@ -14,6 +14,7 @@
 		<slf4j.version>1.6.6</slf4j.version>
 		<junit.version>4.11</junit.version>
 		<mockito.version>1.9.5-rc1</mockito.version>
+		<junit.version>4.11</junit.version>
 		<solr.version>4.8.0</solr.version>
 	</properties>
 	<licenses>
@@ -75,6 +76,12 @@
 			<artifactId>commons-logging</artifactId>
 			<version>1.2</version>
 		</dependency>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>${junit.version}</version>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 	<build>
 		<plugins>
diff --git a/solrdf/src/main/java/org/gazzax/labs/solrdf/handler/update/FieldInjectorRegistry.java b/solrdf/src/main/java/org/gazzax/labs/solrdf/handler/update/FieldInjectorRegistry.java
index 76632a6..4e66086 100644
--- a/solrdf/src/main/java/org/gazzax/labs/solrdf/handler/update/FieldInjectorRegistry.java
+++ b/solrdf/src/main/java/org/gazzax/labs/solrdf/handler/update/FieldInjectorRegistry.java
@@ -61,7 +61,7 @@ public void inject(final SolrInputDocument document, final Object value) {
 		}
 	};
 	
-	private final Map<String, FieldInjector> injectors = new HashMap<String, FieldInjector>();
+	final Map<String, FieldInjector> injectors = new HashMap<String, FieldInjector>();
 	{
 		injectors.put(XSDDatatype.XSDboolean.getURI(), booleanFieldInjector);		
 		
diff --git a/solrdf/src/test/java/org/gazzax/labs/solrdf/handler/update/FieldInjectorRegistryTestCase.java b/solrdf/src/test/java/org/gazzax/labs/solrdf/handler/update/FieldInjectorRegistryTestCase.java
new file mode 100644
index 0000000..17cd3fe
--- /dev/null
+++ b/solrdf/src/test/java/org/gazzax/labs/solrdf/handler/update/FieldInjectorRegistryTestCase.java
@@ -0,0 +1,38 @@
+package org.gazzax.labs.solrdf.handler.update;
+
+import static org.junit.Assert.assertSame;
+
+import java.util.Map.Entry;
+
+import org.gazzax.labs.solrdf.handler.update.FieldInjectorRegistry.FieldInjector;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * Test case for {@link FieldInjectorRegistry}.
+ * 
+ * @author Andrea Gazzarini
+ * @since 1.0
+ */
+public class FieldInjectorRegistryTestCase {
+	private FieldInjectorRegistry cut;
+	
+	@Before
+	public void setUp() {
+		cut = new FieldInjectorRegistry();
+	}
+	
+	/**
+	 * If an injector has been registered for a given datatype then it must be returned.
+	 */
+	@Test
+	public void registeredInjector() {
+		for (final Entry<String, FieldInjector> entry : cut.injectors.entrySet()) {
+			final String dataTypeURI = entry.getKey();
+			final FieldInjector result = cut.get(dataTypeURI);
+			assertSame(entry.getValue(), result);
+		}
+		
+		assertSame(cut.catchAllInjector(), cut.get(null));
+	}
+}
\ No newline at end of file