diff --git a/workspace/ttnhabbridge/src/test/java/nl/sikken/bertrik/hab/habitat/docs/PayloadTelemetryDocTest.java b/workspace/ttnhabbridge/src/test/java/nl/sikken/bertrik/hab/habitat/docs/PayloadTelemetryDocTest.java
new file mode 100644
index 0000000..ffe7f51
--- /dev/null
+++ b/workspace/ttnhabbridge/src/test/java/nl/sikken/bertrik/hab/habitat/docs/PayloadTelemetryDocTest.java
@@ -0,0 +1,25 @@
+package nl.sikken.bertrik.hab.habitat.docs;
+
+import java.util.Date;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Unit tests for PayloadTelemetryDoc.
+ */
+public final class PayloadTelemetryDocTest {
+
+	/**
+	 * Verifies basic formatting.
+	 */
+	@Test
+	public void testFormat() {
+		final Date date = new Date();
+		final PayloadTelemetryDoc doc = new PayloadTelemetryDoc(date, "BERTRIK", new byte[] {1, 2, 3});
+		final String json = doc.format();
+		
+		Assert.assertNotNull(json);
+	}
+	
+}