diff --git a/src/test/java/com/maxmind/geoip2/DatabaseReaderTest.java b/src/test/java/com/maxmind/geoip2/DatabaseReaderTest.java
index dada9a1c..97e1bb76 100644
--- a/src/test/java/com/maxmind/geoip2/DatabaseReaderTest.java
+++ b/src/test/java/com/maxmind/geoip2/DatabaseReaderTest.java
@@ -10,12 +10,14 @@
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
+import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.InetAddress;
 import java.net.URISyntaxException;
 import java.net.URL;
+import java.nio.file.Files;
 import java.util.Arrays;
 
 import static org.hamcrest.CoreMatchers.containsString;
@@ -104,6 +106,18 @@ private void testMemoryMode(DatabaseReader reader) throws IOException,
         reader.close();
     }
 
+    @Test
+    public void testStreamFile() throws Exception {
+        byte[] bytes = Files.readAllBytes(
+                this.getFile("GeoIP2-Anonymous-IP-Test.mmdb").toPath());
+        InputStream stream = new ByteArrayInputStream(bytes);
+        DatabaseReader reader = new DatabaseReader.Builder(stream).build();
+        InetAddress ipAddress = InetAddress.getByName("1.2.0.1");
+        AnonymousIpResponse response = reader.anonymousIp(ipAddress);
+        assertTrue(response.isAnonymous());
+        reader.close();
+    }
+
     @Test
     public void metadata() throws IOException {
         DatabaseReader reader = new DatabaseReader.Builder(this.geoipFile)