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POJUnit test case failure. java.lang.AssertionError: expected:<[I@12c5431> but was:<[I@14b6bed>
 

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  1. POJUnit test case failure. java.lang.AssertionError: expected:<[I@12c5431> but was:<[I@14b6bed>
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    <p>I have been facing this problem for a while and it starts frustrating me. The code needs to return the k elements of a nearest to val. This method will throw an IllegalArgumentException if k is negative and return an array of zero length if k == 0 or if k > a.length. When I run the test case against this method, it reports:</p> <pre><code>There was 1 failure: 1) nearestKTest(SelectorTest) java.lang.AssertionError: expected:&lt;[I@12c5431&gt; but was:&lt;[I@14b6bed&gt; at SelectorTest.nearestKTest(SelectorTest.java:21) FAILURES!!! Tests run: 1, Failures: 1 </code></pre> <p>I know this means expected didn't match actual. I just could not figure it out. :(</p> <pre><code>public static int[] nearestK(int[] a, int val, int k) { int[] b = new int[10]; for (int i = 0; i &lt; b.length; i++){ b[i] = Math.abs(a[i] - val); } Arrays.sort(b); int[] c = new int [k]; for (int i = 0; i &lt; k; i++){ if (k &lt; 0){ throw new IllegalArgumentException("k is not invalid!"); } else if (k == 0 || k &gt; a.length){ return new int[0];} else{ c[i] = b[i];} } return c; } Test case: import org.junit.Assert; import static org.junit.Assert.*; import org.junit.Before; import org.junit.Test; public class SelectorTest { /** Fixture initialization (common initialization * for all tests). **/ @Before public void setUp() { } /** A test that always fails. **/ @Test public void nearestKTest() { int[] a = {2, 4, 6, 7, 8, 10, 13, 14, 15, 32}; int[] expected = {6, 7}; int[] actual = Selector.nearestK(a, 6, 2); Assert.assertEquals(expected,actual); } } </code></pre>
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