diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 4f91e6d98..da050805c 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -44,6 +44,9 @@ sourceSets{
         kotlin{
             srcDirs("test")
         }
+        java{
+            srcDirs("test")
+        }
     }
 }
 
diff --git a/app/test/processing/app/MessagesTest.kt b/app/test/processing/app/MessagesTest.kt
new file mode 100644
index 000000000..f9420db3d
--- /dev/null
+++ b/app/test/processing/app/MessagesTest.kt
@@ -0,0 +1,109 @@
+package processing.app
+
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Test
+import org.mockito.Mockito.*
+import java.io.*
+
+class MessagesTest {
+    @Test
+    fun showMessage() {
+        mockStatic(Base::class.java).use {
+            mocked -> mocked.`when`<Boolean> { Base.isCommandLine() }.thenReturn(true)
+
+            val streamOut = ByteArrayOutputStream()
+            System.setOut(PrintStream(streamOut))
+
+            Messages.showMessage("TestTitle", "Hello World!")
+            val testOutput = streamOut.toString()
+
+            assertTrue(testOutput.contains("TestTitle: Hello World!"))
+        }
+    }
+
+    @Test
+    fun showWarning() {
+        val baseMock = mockStatic(Base::class.java)
+
+        baseMock.`when`<Boolean> { Base.isCommandLine() }.thenReturn(true)
+
+        val out = ByteArrayOutputStream()
+        val err = ByteArrayOutputStream()
+
+        System.setOut(PrintStream(out))
+        System.setErr(PrintStream(err))
+
+        val ex = RuntimeException("test")
+
+        Messages.showWarning("Warning", "Something happened", ex)
+
+        assertTrue(out.toString().contains("Warning: Something happened"))
+        assertTrue(err.toString().contains("test"))
+
+        baseMock.close()
+    }
+
+    @Test
+    fun testShowWarning() {
+    }
+
+    @Test
+    fun testShowWarning1() {
+    }
+
+    @Test
+    fun showWarningTiered() {
+    }
+
+    @Test
+    fun showError() {
+    }
+
+    @Test
+    fun showTrace() {
+            mockStatic(Base::class.java).use { baseMock ->
+            baseMock.`when`<Boolean> { Base.isCommandLine() }.thenReturn(true)
+
+            val err = ByteArrayOutputStream()
+            System.setErr(PrintStream(err))
+
+            val ex = RuntimeException("boom")
+
+            Messages.showTrace("Title", "Something broke", ex, false)
+
+            val output = err.toString()
+
+            assertTrue(output.contains("Title: Something broke"))
+            assertTrue(output.contains("boom"))
+        }
+    }
+
+    @Test
+    fun showYesNoQuestion() {
+    }
+
+    @Test
+    fun showCustomQuestion() {
+    }
+
+    @Test
+    fun testLog1() {
+    }
+
+    @Test
+    fun testLog2() {
+    }
+
+    @Test
+    fun testLogF() {
+    }
+
+    @Test
+    fun err() {
+    }
+
+    @Test
+    fun testErr() {
+    }
+
+}
\ No newline at end of file