Add JUnit test

Same package but test could not be found

Author: JumpyJay

build.gradle

@@ -28,11 +28,11 @@ test {
 }
 
 application {
-    mainClass.set("seedu.duke.Duke")
+    mainClass.set("Milo.Milo")
 }
 
 shadowJar {
-    archiveBaseName = "duke"
+    archiveBaseName = "Milo"
     archiveClassifier = null
 }
 

src/test/java/Milo/MiloTest.java

@@ -0,0 +1,40 @@
+package Milo;
+import org.junit.jupiter.api.Test;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class MiloTest {
+    @Test
+    public void testGreetingAndExit() {
+        ByteArrayOutputStream outputStreamCaptor = new ByteArrayOutputStream();
+        // Redirect System.out to capture printed output
+        System.setOut(new PrintStream(outputStreamCaptor));
+        // Simulate user input with "bye" to immediately exit
+        System.setIn(new ByteArrayInputStream("bye\n".getBytes()));
+        // Run the Milo application
+        Milo milo = new Milo();
+        milo.run();
+
+        String expectedOutput = """
+                ____________________________________________________________
+                Hello! I'm Milo.Milo
+                What can I do for you?
+                  ╱|、
+                (˚ˎ 。7 \s
+                 |、˜〵         \s
+                 じしˍ,)ノ
+                ____________________________________________________________
+                ____________________________________________________________
+                Bye. Hope to see you again soon!
+                 ∧,,,∧
+                ( ̳• · •̳)
+                /    づ♡
+                ____________________________________________________________
+                """;
+
+        // Verify that the greeting and exit messages were printed
+        assertEquals(expectedOutput, outputStreamCaptor.toString().replace("\r", ""));
+    }
+}

src/test/java/Milo/UiTest.java

@@ -0,0 +1,26 @@
+package Milo;
+import org.junit.jupiter.api.Test;
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class UiTest {
+    @Test
+    public void testGreetUser() {
+        Ui ui = new Ui();
+        ui.greetUser();
+        ByteArrayOutputStream outputStreamCaptor = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outputStreamCaptor));
+        String expectedOutput = """
+                ____________________________________________________________
+                Hello! I'm Milo.Milo
+                What can I do for you?
+                  ╱|、
+                (˚ˎ 。7 \s
+                 |、˜〵         \s
+                 じしˍ,)ノ
+                ____________________________________________________________
+                """;
+        assertEquals(expectedOutput, outputStreamCaptor.toString());
+    }
+}