add JUnit

Author: thanhhip56

src/test/java/com/hackerrank/algorithms/arraysandsorting/SampleTest.java

@@ -0,0 +1,29 @@
+package com.hackerrank.algorithms.arraysandsorting;
+
+import static org.junit.Assert.assertArrayEquals;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+
+@RunWith(JUnit4.class)
+public class SampleTest {
+InsertionSort1 insertionSort1 = new InsertionSort1();
+@Test
+public void tesInsertIntoSorted() {
+int[] inputArr = new int[] {1,2,4};
+int[] inputResult = new int[] {1,2,4};
+insertionSort1.insertIntoSorted(inputArr);
+assertArrayEquals(inputResult, inputArr);
+}
+
+@Test
+public void tesInsertIntoSorted2() {
+int[] inputArr = new int[] {1,6,4};
+int[] inputResult = new int[] {1, 4, 6};
+insertionSort1.insertIntoSorted(inputArr);
+assertArrayEquals(inputResult, inputArr);
+}
+
+}