diff --git a/src/test/java/me/wiefferink/interactivemessenger/testing/unit/TestMessage.java b/src/test/java/me/wiefferink/interactivemessenger/testing/unit/TestMessage.java
new file mode 100644
index 0000000..4361d25
--- /dev/null
+++ b/src/test/java/me/wiefferink/interactivemessenger/testing/unit/TestMessage.java
@@ -0,0 +1,151 @@
+package me.wiefferink.interactivemessenger.testing.unit;
+
+import me.wiefferink.interactivemessenger.processing.Message;
+import me.wiefferink.interactivemessenger.source.MessageProvider;
+import me.wiefferink.interactivemessenger.source.YAMLMessageProvider;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.io.File;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Logger;
+
+import static junit.framework.TestCase.assertEquals;
+import static junit.framework.TestCase.assertFalse;
+import static junit.framework.TestCase.assertNotNull;
+import static junit.framework.TestCase.assertTrue;
+
+public class TestMessage {
+
+	@BeforeClass
+	public static void initMessage() {
+		URL resource = TestMessage.class.getClassLoader().getResource("processing/messages.yml");
+		assertNotNull("Resource file messages.yml not found in the jar", resource);
+		MessageProvider provider = new YAMLMessageProvider(new File(resource.getFile()));
+		Message.init(provider, Logger.getGlobal());
+	}
+
+	@Test
+	public void staticEmpty() {
+		Message message = Message.empty();
+		assertTrue(message.isEmpty());
+		assertTrue(message.get().isEmpty());
+		assertTrue(message.getPlain().isEmpty());
+		assertTrue(message.getSingle().isEmpty());
+		assertTrue(message.getSingleRaw().isEmpty());
+		assertTrue(message.getRaw().isEmpty());
+	}
+
+	private void testFromString(String message, String... expected) {
+		assertEquals(Arrays.asList(expected), Message.fromString(message).getRaw());
+	}
+
+	@Test
+	public void staticFromString() {
+		testFromString(null);
+		testFromString("", "");
+		testFromString("a", "a");
+		testFromString("abc", "abc");
+	}
+
+	private void testFromList(List<String> message, String... expected) {
+		assertEquals(Arrays.asList(expected), Message.fromList(message).getRaw());
+	}
+
+	@Test
+	public void staticFromList() {
+		testFromList(null);
+		testFromList(Collections.<String>emptyList());
+		testFromList(Collections.singletonList("a"), "a");
+		testFromList(Arrays.asList("", ""), "", "");
+		testFromList(Arrays.asList("abc", "def"), "abc", "def");
+		testFromList(Arrays.asList("abc", "", "def"), "abc", "", "def");
+	}
+
+	private void testFromKey(String key, String... expected) {
+		assertEquals(Arrays.asList(expected), Message.fromKey(key).getRaw());
+	}
+
+	@Test
+	public void staticFromKey() {
+		testFromKey(null);
+		testFromKey("doestNotExist");
+		testFromKey("single", "Hello world!");
+		testFromKey("multiple", "Hello ", "world!");
+
+		testFromKey("multilineWithNewlines1", "Hello world!\nSecond line\n");
+		testFromKey("multilineWithNewlines2", "Hello world!\nSecond line");
+		testFromKey("multilineWithNewlines3", "Hello world!\nSecond line\n\n");
+
+		testFromKey("multilineWithoutNewlines1", "Hello world! More text\n");
+		testFromKey("multilineWithoutNewlines2", "Hello world! More text");
+		testFromKey("multilineWithoutNewlines3", "Hello world! More text\n\n");
+	}
+
+	@Test
+	public void isEmpty() {
+		assertTrue(Message.fromString(null).isEmpty());
+		assertTrue(Message.fromString("").isEmpty());
+		assertFalse(Message.fromString("a").isEmpty());
+
+		assertTrue(Message.fromList(new ArrayList<String>()).isEmpty());
+		assertTrue(Message.fromList(Collections.singletonList("")).isEmpty());
+		assertFalse(Message.fromList(Collections.singletonList("a")).isEmpty());
+		assertTrue(Message.fromList(Arrays.asList("", "")).isEmpty());
+		assertFalse(Message.fromList(Arrays.asList("a", "")).isEmpty());
+		assertFalse(Message.fromList(Arrays.asList("", "a")).isEmpty());
+	}
+
+	@Test
+	public void prefix() {
+		assertFalse(Message.empty().prefix().isEmpty());
+		assertTrue(Message.empty().prefix(false).isEmpty());
+		assertFalse(Message.empty().prefix(true).isEmpty());
+	}
+
+	@Test
+	public void append() {
+		// Append a String
+		assertEquals(Collections.singletonList("abc"), Message.empty().append("abc").getRaw());
+		assertEquals(Arrays.asList("abc", "def"), Message.empty().append("abc").append("def").getRaw());
+
+		// Append a List
+		assertEquals(Collections.emptyList(), Message.empty().append(Collections.<String>emptyList()).getRaw());
+		assertEquals(Collections.singletonList("abc"), Message.empty().append(Collections.singletonList("abc")).getRaw());
+		assertEquals(Arrays.asList("a", "bc"), Message.empty().append(Arrays.asList("a", "bc")).getRaw());
+		assertEquals(Arrays.asList("a", "bc", "de", "f"), Message.empty().append(Arrays.asList("a", "bc")).append(Arrays.asList("de", "f")).getRaw());
+
+		// Append a Message
+		// TODO test if appended message has replacement already done? (they should be)
+		assertEquals(Collections.emptyList(), Message.empty().append(Message.empty()).getRaw());
+		assertEquals(Collections.singletonList("abc"), Message.empty().append(Message.fromString("abc")).getRaw());
+		assertEquals(Arrays.asList("a", "bc"), Message.empty().append(Message.fromList(Arrays.asList("a", "bc"))).getRaw());
+		assertEquals(Arrays.asList("a", "bc", "de", "f"), Message.empty().append(Message.fromList(Arrays.asList("a", "bc"))).append(Message.fromList(Arrays.asList("de", "f"))).getRaw());
+	}
+
+	@Test
+	public void prepend() {
+		// Append a String
+		assertEquals(Collections.singletonList("abc"), Message.empty().prepend("abc").getRaw());
+		assertEquals(Arrays.asList("def", "abc"), Message.empty().prepend("abc").prepend("def").getRaw());
+
+		// Append a List
+		assertEquals(Collections.emptyList(), Message.empty().prepend(Collections.<String>emptyList()).getRaw());
+		assertEquals(Collections.singletonList("abc"), Message.empty().prepend(Collections.singletonList("abc")).getRaw());
+		assertEquals(Arrays.asList("a", "bc"), Message.empty().prepend(Arrays.asList("a", "bc")).getRaw());
+		assertEquals(Arrays.asList("de", "f", "a", "bc"), Message.empty().prepend(Arrays.asList("a", "bc")).prepend(Arrays.asList("de", "f")).getRaw());
+
+		// Append a Message
+		// TODO test if prepended message has replacement already done? (they should be)
+		assertEquals(Collections.emptyList(), Message.empty().prepend(Message.empty()).getRaw());
+		assertEquals(Collections.singletonList("abc"), Message.empty().prepend(Message.fromString("abc")).getRaw());
+		assertEquals(Arrays.asList("a", "bc"), Message.empty().prepend(Message.fromList(Arrays.asList("a", "bc"))).getRaw());
+		assertEquals(Arrays.asList("de", "f", "a", "bc"), Message.empty().prepend(Message.fromList(Arrays.asList("a", "bc"))).prepend(Message.fromList(Arrays.asList("de", "f"))).getRaw());
+	}
+
+
+}