From b42b2a80c00e8098202720fca28e279b0b3f9fd5 Mon Sep 17 00:00:00 2001
From: Dylan Chew <dylanchew@r-135-104-25-172.comp.nus.edu.sg>
Date: Wed, 7 Sep 2016 11:06:08 +0800
Subject: [PATCH] add Utils test case

---
 src/seedu/addressbook/common/UtilsTest.java | 41 +++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 src/seedu/addressbook/common/UtilsTest.java

diff --git a/src/seedu/addressbook/common/UtilsTest.java b/src/seedu/addressbook/common/UtilsTest.java
new file mode 100644
index 000000000..8ed12d2f4
--- /dev/null
+++ b/src/seedu/addressbook/common/UtilsTest.java
@@ -0,0 +1,41 @@
+package seedu.addressbook.common;
+
+import static org.junit.Assert.*;
+import static seedu.addressbook.common.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import seedu.addressbook.commands.HelpCommand;
+import seedu.addressbook.parser.Parser;
+
+public class UtilsTest {
+	
+    @Test
+    public void emptyInput_returnsCorrect() {
+        final Object obj = null;
+        assertTrue(Utils.isAnyNull(obj));
+    }
+    
+    @Test
+    public void NonEmptyInput_returnsIncorrect() {
+        final Object obj = new Object();
+        assertFalse(Utils.isAnyNull(obj));
+    }
+    
+    @Test
+    public void NonIdenticalInput_returnsCorrect() {
+        final ArrayList<Integer> lst = new ArrayList<Integer>(Arrays.asList(1,2,3,4,5));
+        assertTrue(Utils.elementsAreUnique(lst));
+    }
+    
+    @Test
+    public void IdenticalInput_returnsIncorrect() {
+        final ArrayList<Integer> lst = new ArrayList<Integer>(Arrays.asList(1,1,3,4,5));
+        assertTrue(Utils.elementsAreUnique(lst));
+    }
+}