add unit test

company/yelp/ReverseWordsInAStringUnitTest.java

@@ -0,0 +1,65 @@
+
+import static org.junit.Assert.*;
+
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+
+public class YelpUnitTest {
+	private ReverseWordsInAString reverseString;
+
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+	}
+
+	@AfterClass
+	public static void tearDownAfterClass() throws Exception {
+	}
+
+	@Before
+	public void setUp() throws Exception {
+		reverseString = new ReverseWordsInAString();
+	}
+
+	@After
+	public void tearDown() throws Exception {
+	}
+
+
+	@Test
+	public void trueTest() {
+		String s = "Today is Monday";
+		String expectResult = "Monday is Today";
+
+		assertEquals(expectResult, reverseString.reverseWords(s));
+	}
+
+	@Test
+	public void trueTest2() {
+		String s = "One plus One equals Two";
+		String expectResult = "Two equals One plus One";
+
+		assertEquals(expectResult, reverseString.reverseWords(s));
+	}
+
+	@Test
+	public void trueTest3() {
+		String s = "Saturday Night Live";
+		String expectResult = "Live Night Saturday";
+
+		assertEquals(expectResult, reverseString.reverseWords(s));
+	}
+
+	@Test
+	public void emptyTest() {
+		String s = "";
+		String expectResult = "";
+
+		assertEquals(expectResult, reverseString.reverseWords(s));
+	}
+
+
+}