change testclassfile

src/test/java/hello/WelcomerTest.java

@@ -0,0 +1,17 @@
+package hello;
+
+import static org.hamcrest.CoreMatchers.containsString;
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+public class WelcomerTest {
+	
+	private Welcomer welcomer = new Welcomer();
+
+	@Test
+	public void welcomerSaysWelcome() {
+		assertThat(welcomer.sayWelcome(), containsString("Welcome"));
+	}
+
+}