diff --git a/rai-sdk-examples/pom.xml b/rai-sdk-examples/pom.xml
index 17e46d6..ac1a78d 100644
--- a/rai-sdk-examples/pom.xml
+++ b/rai-sdk-examples/pom.xml
@@ -39,6 +39,11 @@
             <artifactId>rai-sdk</artifactId>
             <version>${project.parent.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-reload4j</artifactId>
+            <version>2.0.6</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -62,5 +67,11 @@
                 <artifactId>maven-dependency-plugin</artifactId>
             </plugin>
         </plugins>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
     </build>
 </project>
diff --git a/rai-sdk-examples/src/main/resources/log4j.properties b/rai-sdk-examples/src/main/resources/log4j.properties
new file mode 100644
index 0000000..1a67939
--- /dev/null
+++ b/rai-sdk-examples/src/main/resources/log4j.properties
@@ -0,0 +1,5 @@
+log4j.rootLogger=DEBUG, stdout
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.Target=System.out
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d{ISO8601} %p : %m%n
diff --git a/rai-sdk/pom.xml b/rai-sdk/pom.xml
index 224b969..406f7c7 100644
--- a/rai-sdk/pom.xml
+++ b/rai-sdk/pom.xml
@@ -40,6 +40,18 @@
             <version>5.8.2</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>4.1.0</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-junit-jupiter</artifactId>
+            <version>4.1.0</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>commons-fileupload</groupId>
             <artifactId>commons-fileupload</artifactId>
diff --git a/rai-sdk/src/main/java/com/relationalai/MultipartReader.java b/rai-sdk/src/main/java/com/relationalai/MultipartReader.java
index 12ecc6e..a8abb36 100644
--- a/rai-sdk/src/main/java/com/relationalai/MultipartReader.java
+++ b/rai-sdk/src/main/java/com/relationalai/MultipartReader.java
@@ -136,9 +136,11 @@ private static String getFieldName(String contentDisposition) {
 
             // parameter parser can handle null input
             Map<String,String> params = parser.parse(contentDisposition, ';');
-            fieldName = (String) params.get("name");
+            fieldName = params.get("name");
             if (fieldName != null) {
                 fieldName = fieldName.trim();
+            } else {
+                fieldName = "";
             }
         }
 
diff --git a/rai-sdk/src/test/java/com/relationalai/ExecuteAsyncMockedTest.java b/rai-sdk/src/test/java/com/relationalai/ExecuteAsyncMockedTest.java
new file mode 100644
index 0000000..e4c1b54
--- /dev/null
+++ b/rai-sdk/src/test/java/com/relationalai/ExecuteAsyncMockedTest.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2022 RelationalAI, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"): you may
+ * not use this file except in compliance with the License. You may obtain
+ * a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package com.relationalai;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mockito;
+import relationalai.protocol.Message;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.http.HttpClient;
+import java.net.http.HttpHeaders;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.*;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.*;
+
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+@ExtendWith({TestExtension.class})
+public class ExecuteAsyncMockedTest extends UnitTest {
+
+    @Test
+    void testExecuteAsyncMocked() throws HttpError, InterruptedException, IOException, URISyntaxException {
+        var client = createClient();
+        client.setHttpClient(getMockedHttpClient());
+
+        var query = "x, x^2, x^3, x^4 from x in {1; 2; 3; 4; 5}";
+
+        var rsp = client.executeAsync("mockedDB", "mockedEngine", query, true);
+
+        var results = new ArrayList<ArrowRelation> () {
+            {
+                add(new ArrowRelation("", Arrays.asList(new Object[] {1L, 2L, 3L, 4L, 5L}) ));
+                add(new ArrowRelation("", Arrays.asList(new Object[] {1L, 4L, 9L, 16L, 25L}) ));
+                add(new ArrowRelation("", Arrays.asList(new Object[] {1L, 8L, 27L, 64L, 125L}) ));
+                add(new ArrowRelation("", Arrays.asList(new Object[] {1L, 16L, 81L, 256L, 625L}) ));
+            }
+        };
+
+        var problems = new ArrayList<Object>();
+
+        var metadata = Message.MetadataInfo.parseFrom(
+                Files.readAllBytes(
+                        Path.of(Paths.get(getClass().getResource("/metadata.pb").toURI()).toString())
+                )
+        );
+
+        assertEquals(rsp.metadata.toString(), metadata.toString());
+        assertEquals(rsp.results, results);
+        assertEquals(rsp.problems, problems);
+    }
+
+    HttpClient getMockedHttpClient() throws IOException, InterruptedException, URISyntaxException {
+        var httpRequest = HttpRequest.newBuilder()
+                .headers("User-Agent", "rai-sdk-java")
+                .uri(new URI("https://mocked/path/to/transactions")).build();
+        var httpClient = Mockito.mock(HttpClient.class);
+        var txnhttpResponse = Mockito.mock(HttpResponse.class);
+
+        Mockito.when(txnhttpResponse.statusCode()).thenReturn(200);
+        Mockito.when(txnhttpResponse.request()).thenReturn(httpRequest);
+        Mockito.when(txnhttpResponse.headers()).thenReturn(
+                HttpHeaders.of(new HashMap<>() {{put("Content-Type", new ArrayList<>() {{ add ("multipart/form-data; boundary=b11385ead6144ee0a9550db3672a7ccf"); }});
+            }}, (k, v) -> true));
+        Mockito.when(txnhttpResponse.body()).thenReturn(Files.readAllBytes(Path.of(Paths.get(getClass().getResource("/multipart.data").toURI()).toString())));
+
+        Mockito.when(httpClient.send(any(), any())).thenReturn(txnhttpResponse);
+
+        return httpClient;
+    }
+}
diff --git a/rai-sdk/src/test/resources/multipart.data b/rai-sdk/src/test/resources/multipart.data
new file mode 100644
index 0000000..4bd88bc
Binary files /dev/null and b/rai-sdk/src/test/resources/multipart.data differ