add tests for 215

Author: fishercoder1534

src/test/java/com/fishercoder/_215Test.java

@@ -6,27 +6,48 @@
 
 import static org.junit.Assert.assertEquals;
 
-/**
- * Created by fishercoder on 5/9/17.
- */
 public class _215Test {
+    private static _215.Solution1 solution1;
     private static _215.Solution2 solution2;
+    private static _215.Solution3 solution3;
     private static int k;
     private static int[] nums;
-    private static int actual;
     private static int expected;
 
     @BeforeClass
     public static void setup() {
+        solution1 = new _215.Solution1();
         solution2 = new _215.Solution2();
+        solution3 = new _215.Solution3();
     }
 
     @Test
     public void test1() {
         k = 2;
         nums = new int[]{3, 2, 1, 5, 6, 4};
-        actual = solution2.findKthLargest(nums, k);
         expected = 5;
-        assertEquals(expected, actual);
+        assertEquals(expected, solution1.findKthLargest(nums, k));
+        assertEquals(expected, solution2.findKthLargest(nums, k));
+        assertEquals(expected, solution3.findKthLargest(nums, k));
+    }
+
+    @Test
+    public void test2() {
+        k = 1;
+        nums = new int[]{1};
+        expected = 1;
+        assertEquals(expected, solution1.findKthLargest(nums, k));
+        assertEquals(expected, solution2.findKthLargest(nums, k));
+        assertEquals(expected, solution3.findKthLargest(nums, k));
+    }
+
+    @Test
+    public void test3() {
+        k = 2;
+        nums = new int[]{2, 1};
+        expected = 1;
+        assertEquals(expected, solution1.findKthLargest(nums, k));
+        assertEquals(expected, solution2.findKthLargest(nums, k));
+        assertEquals(expected, solution3.findKthLargest(nums, k));
     }
 }