Add unit and testcontainers tests for MailSessionProducer. IQSS#7424

Author: poikilotherm

pom.xml

@@ -34,7 +34,7 @@
         <junit.version>4.13.1</junit.version>
         <junit.jupiter.version>5.7.0</junit.jupiter.version>
         <junit.vintage.version>${junit.jupiter.version}</junit.vintage.version>
-        <testcontainers.version>1.13.0</testcontainers.version>
+        <testcontainers.version>1.15.0</testcontainers.version>
         <mockito.version>2.28.2</mockito.version>
         <flyway.version>5.2.4</flyway.version>
         <jhove.version>1.20.1</jhove.version>
@@ -654,7 +654,12 @@
             <version>${mockito.version}</version>
             <scope>test</scope>
         </dependency>
-        
+        <dependency>
+            <groupId>org.microbean</groupId>
+            <artifactId>microbean-microprofile-config</artifactId>
+            <version>0.4.1</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
     <build>
         <!--        <testResources>

src/test/java/edu/harvard/iq/dataverse/util/MailSessionProducerIT.java

@@ -0,0 +1,92 @@
+package edu.harvard.iq.dataverse.util;
+
+import com.jayway.restassured.RestAssured;
+import com.jayway.restassured.parsing.Parser;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.containers.wait.strategy.Wait;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+
+import javax.mail.Message;
+import javax.mail.Session;
+import javax.mail.Transport;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeMessage;
+
+import java.io.PrintWriter;
+import java.util.Date;
+
+import static com.jayway.restassured.RestAssured.given;
+import static org.hamcrest.CoreMatchers.equalTo;
+
+@Tag("testcontainers")
+@Testcontainers
+class MailSessionProducerIT {
+    
+    private static final Integer PORT_SMTP = 1025;
+    private static final Integer PORT_HTTP = 8025;
+    
+    Integer smtpPort;
+    String smtpHost;
+    
+    MailSessionProducer mailSessionProducer = new MailSessionProducer();
+    
+    @Container
+    public static GenericContainer<?> mailhog = new GenericContainer<>("mailhog/mailhog")
+        .withExposedPorts(PORT_HTTP, PORT_SMTP)
+        .waitingFor(Wait.forHttp("/"));
+    
+    @BeforeEach
+    public void setUp() {
+        smtpPort = mailhog.getMappedPort(PORT_SMTP);
+        smtpHost = mailhog.getContainerIpAddress();
+        Integer httpPort = mailhog.getMappedPort(PORT_HTTP);
+        
+        RestAssured.baseURI = "http://" + smtpHost;
+        RestAssured.port = httpPort;
+        RestAssured.basePath = "/api/v2";
+        RestAssured.registerParser("text/json", Parser.JSON);
+        
+        System.setProperty("dataverse.mail.system.host", smtpHost);
+        System.setProperty("dataverse.mail.system.port", smtpPort.toString());
+    }
+    
+    @Test
+    void testMailSession() {
+        // given
+        Session mailSession = mailSessionProducer.getSystemMailSession();
+        
+        // when
+        sendEmail(mailSession, "[email protected]", "foobar", "foobar");
+        
+        // then
+        given().get("/messages").then()
+            .statusCode(200)
+            .body("total", equalTo(1));
+    }
+    
+    public static void sendEmail(Session session, String toEmail, String subject, String body){
+        try
+        {
+            MimeMessage msg = new MimeMessage(session);
+            //set message headers
+            msg.addHeader("Content-type", "text/HTML; charset=UTF-8");
+            msg.addHeader("format", "flowed");
+            msg.addHeader("Content-Transfer-Encoding", "8bit");
+            msg.setReplyTo(InternetAddress.parse("[email protected]", false));
+            msg.setSubject(subject, "UTF-8");
+            msg.setText(body, "UTF-8");
+            msg.setSentDate(new Date());
+            msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail, false));
+            
+            Transport.send(msg);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+    
+}

src/test/java/edu/harvard/iq/dataverse/util/MailSessionProducerTest.java

@@ -0,0 +1,21 @@
+package edu.harvard.iq.dataverse.util;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class MailSessionProducerTest {
+    
+    @BeforeAll
+    static void setUp() {
+        System.setProperty(MailSessionProducer.MAIL_CONFIG_PREFIX+".test", "test");
+    }
+    
+    @Test
+    void getMailProperties() {
+        MailSessionProducer test = new MailSessionProducer();
+        assertEquals(1, test.getMailProperties().stringPropertyNames().size());
+        assertTrue(test.getMailProperties().stringPropertyNames().contains("mail.smtp.test"));
+    }
+}