Handle null for AuthToken and Config

Author: pontusmelke

driver/src/main/java/org/neo4j/driver/v1/GraphDatabase.java

@@ -122,6 +122,9 @@ public static Driver driver( String url, AuthToken authToken, Config config )
      */
     public static Driver driver( URI url, AuthToken authToken, Config config )
     {
-        return new InternalDriver( url, authToken, config );
+        AuthToken tokenToUse = authToken != null ? authToken: AuthTokens.none();
+        Config configToUse = config != null ? config: Config.defaultConfig();
+
+        return new InternalDriver( url, tokenToUse, configToUse );
     }
 }

driver/src/test/java/org/neo4j/driver/v1/integration/SessionIT.java

@@ -21,6 +21,8 @@
 import org.junit.Rule;
 import org.junit.Test;
 
+import org.neo4j.driver.v1.AuthToken;
+import org.neo4j.driver.v1.AuthTokens;
 import org.neo4j.driver.v1.Driver;
 import org.neo4j.driver.v1.GraphDatabase;
 import org.neo4j.driver.v1.Session;
@@ -46,4 +48,34 @@ public void shouldKnowSessionIsClosed() throws Throwable
         // Then
         assertFalse( session.isOpen() );
     }
+
+    @Test
+    public void shouldHandleNullConfig() throws Throwable
+    {
+        // Given
+        Driver driver = GraphDatabase.driver( neo4j.address(), AuthTokens.none(), null );
+        Session session = driver.session();
+
+        // When
+        session.close();
+
+        // Then
+        assertFalse( session.isOpen() );
+    }
+
+    @SuppressWarnings( "ConstantConditions" )
+    @Test
+    public void shouldHandleNullAuthToken() throws Throwable
+    {
+        // Given
+        AuthToken token = null;
+        Driver driver = GraphDatabase.driver( neo4j.address(), token);
+        Session session = driver.session();
+
+        // When
+        session.close();
+
+        // Then
+        assertFalse( session.isOpen() );
+    }
 }