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Configure the MUnit FTP Server Utility

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Configure the MUnit FTP Server utility to run MUnit tests against an in-memory FTP server without connecting to an external FTP server. Use it to test Mule flows that interact with FTP or SFTP connectors in an isolated environment.

If you want to test the following Mule application:

<sftp:config name="SFTP_Config">
    <sftp:connection host="${ftp.host}" port="${ftp.port}" username="${ftp.user}" password="${ftp.password}"/>
</sftp:config>

<configuration-properties file="ftp.properties" />

<flow name="listFlow">
    <sftp:list config-ref="SFTP_Config" directoryPath="."/>
    <foreach>
        <logger level="INFO" message="#[attributes.fileName]"/>
    </foreach>
</flow>

The ftp.properties in src/main/resources has the following content:

ftp.host=localhost
ftp.port=22
ftp.user=max
ftp.password=munittest

The username field can’t be empty. If you don’t have a username-password pair, set the username to anonymous and don’t set any password. By default, the anonymous attribute is set to true.

Install the FTP Server

To install the FTP server:

  1. Look for the MUnit Utils FTP Server module.

  2. Add the module to your project:

    <!-- Ftp Server Dependency -->
<dependency>
    <groupId>com.mulesoft.munit.utils</groupId>
    <artifactId>munit-ftpserver-module</artifactId>
    <version>2.0.1</version>
    <classifier>mule-plugin</classifier>
    <scope>test</scope>
</dependency>

    The MUnit FTP server artifact in your POM file must have the test scope.

The MUnit FTP Server module is located at MuleSoft Nexus repository. The MUnit FTP Server module version 3 and later is compatible with Java 17. Previous versions of this module available at Anypoint Exchange are deprecated.

Define the FTP Server

To define the FTP server, change the FTP server attributes as follows:

<ftpserver:config name="MUnit_FTP_Server_Config">
    <ftpserver:connection port="${ftp.port}" username="${ftp.user}" password="${ftp.password}" secure="true" homeDir="${app.home}"/>
----
</ftpserver:config>
----

Run the Test

After configuring the FTP server, you can run the test:

<munit:test name="listFlowTest" description="Test listFlow" >
    <munit:execution>
        <flow-ref name="listFlow"/>
    </munit:execution>
    <munit:validation>
        <munit-tools:assert-that expression="#[sizeOf(payload)]" is="#[MunitTools::greaterThan(0)]"/>
    </munit:validation>
</munit:test>

This FTP accepts any user, so you must not set up a user database or list.

See Also