add support for using metadata to sending email with template

pom.xml

@@ -24,7 +24,7 @@
     </developers>
 
     <properties>
-        <postmark.version>1.1.7</postmark.version>
+        <postmark.version>1.1.8</postmark.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
         <jackson.minimum.version>2.9.2</jackson.minimum.version>

src/main/java/com/wildbit/java/postmark/client/data/model/message/Message.java

@@ -63,5 +63,4 @@ public void addMetadata(String key, String value) {
         }
         metadata.put(key,value);
     }
-
 }

src/main/java/com/wildbit/java/postmark/client/data/model/templates/TemplatedMessage.java

@@ -1,5 +1,7 @@
 package com.wildbit.java.postmark.client.data.model.templates;
 
+import java.util.HashMap;
+
 /**
  * Template Message with all details object.
  */
@@ -19,6 +21,19 @@ public enum TRACK_LINKS {
 
     private Boolean trackOpens;
     private String trackLinks;
+    private HashMap<String, String> metadata;
+
+    public TemplatedMessage() {
+        super();
+    }
+
+    public TemplatedMessage(String from, String to) {
+        super(from, to);
+    }
+
+    public TemplatedMessage(String from, String to, Integer templateId) {
+        super(from, to, templateId);
+    }
 
     // SETTERS AND GETTERS
 
@@ -30,16 +45,14 @@ public enum TRACK_LINKS {
 
     public void setTrackLinks(String trackLinks) { this.trackLinks = trackLinks; }
 
-    public TemplatedMessage() {
-        super();
-    }
+    public HashMap<String, String> getMetadata() { return metadata; }
 
-    public TemplatedMessage(String from, String to) {
-        super(from, to);
-    }
+    public void setMetadata(HashMap<String, String> metadata) { this.metadata = metadata; }
 
-    public TemplatedMessage(String from, String to, Integer templateId) {
-        super(from, to, templateId);
+    public void addMetadata(String key, String value) {
+        if (metadata == null) {
+            metadata = new HashMap<>();
+        }
+        metadata.put(key,value);
     }
-
 }

src/test/java/integration/TemplatedMessageTest.java

@@ -0,0 +1,47 @@
+package integration;
+
+import base.BaseTest;
+import com.wildbit.java.postmark.Postmark;
+import com.wildbit.java.postmark.client.ApiClient;
+import com.wildbit.java.postmark.client.data.model.message.Message;
+import com.wildbit.java.postmark.client.data.model.message.MessageResponse;
+import com.wildbit.java.postmark.client.data.model.templates.TemplatedMessage;
+import com.wildbit.java.postmark.client.exception.InvalidAPIKeyException;
+import com.wildbit.java.postmark.client.exception.InvalidMessageException;
+import com.wildbit.java.postmark.client.exception.PostmarkException;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.IOException;
+import java.util.HashMap;
+
+public class TemplatedMessageTest extends BaseTest {
+
+    ApiClient client = Postmark.getApiClient("POSTMARK_API_TEST", true);
+
+    @Test
+    void send() throws PostmarkException, IOException {
+        TemplatedMessage message = new TemplatedMessage("[email protected]", "[email protected]", 1);
+
+        Throwable exception = assertThrows(InvalidMessageException.class, () -> client.deliverMessageWithTemplate(message));
+        assertEquals("The 'TemplateId' associated with this request is not valid or was not found.", exception.getMessage());
+    }
+
+    @Test
+    void metadata() throws PostmarkException, IOException {
+        TemplatedMessage message = new TemplatedMessage("[email protected]", "[email protected]", 1);
+
+        HashMap<String,String> metadata = new HashMap<String, String>();
+        metadata.put("test1","value1");
+
+        message.setMetadata(metadata);
+        message.addMetadata("test2","value2");
+        message.addMetadata("test3","value3");
+
+        HashMap<String,String> templatedMessageMetadata = message.getMetadata();
+        assertEquals(templatedMessageMetadata.get("test1"), "value1");
+        assertEquals(templatedMessageMetadata.get("test2"), "value2");
+        assertEquals(templatedMessageMetadata.get("test3"), "value3");
+    }
+}