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POerror while running function
 

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  1. POerror while running function
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    <p>Hi im trying to run my function and test it thought the junit test but i can't figure out why my junit tests are failing. im sure that the function that i wrote works. This is homework if anyone is wondering . </p> <p>here is the test </p> <pre><code>@Test public void test4() { lst1.removeAll(3); assertEquals(8, lst1.size()); assertEquals(false, lst1.contains(3)); lst1.removeAll(6); assertEquals(5, lst1.size()); assertEquals(false, lst1.contains(6)); lst1.removeAll(5); assertEquals(3, lst1.size()); lst1.removeAll(4); assertEquals(2, lst1.size()); lst1.removeAll(7); assertEquals(1, lst1.size()); lst1.removeAll(8); assertEquals(0, lst1.size()); } </code></pre> <p>here is the code </p> <pre><code>public void removeAll( E x ) { first = first.next; if (first.data == x ) { first = first.next; } Node curr = first; Node fut = curr.next ; while ( fut!= null) { if (fut.data == x ) { curr.next = fut.next; } curr=curr.next; fut=fut.next; } assert check(); } </code></pre> <p>set up of the junit </p> <pre><code>public class MyListTest { private MyList&lt;Integer&gt; lst0; private MyList&lt;Integer&gt; lst1; private Integer[] a; @Before public void setUp() throws Exception { lst0 = new MyList&lt;Integer&gt;(); a = new Integer[] {3,4,3,5,6,8,6,6,7,5}; lst1 = new MyList&lt;Integer&gt;(); for(Integer x: a) { lst1.add(x); } } </code></pre> <p>Size method</p> <pre><code>public int size() { return sz; } </code></pre> <p>Main method </p> <pre><code>public class MyList&lt;E extends Comparable&lt; E&gt;&gt; implements Iterable&lt;E&gt; { private Node first; private int sz; public MyList() { first = null; sz = 0; assert check(); } } </code></pre> <p>check method </p> <pre><code>private boolean check() { if (first == null &amp;&amp; sz != 0) return false; if (sz == 0 &amp;&amp; first != null) return false; if (sz == 1 &amp;&amp; (first == null || first.next != null)) return false; if (sz &gt; 1 &amp;&amp; (first == null || first.next == null)) return false; int count = 0; Node p = first; while(p != null) { count++; p = p.next; } if (count != sz) { System.out.printf("count = %d, sz = %d\n", count, sz); return false; } return true; } </code></pre>
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    1. This table or related slice is empty.
    1. PTQuestion
    1. USGilsha
    1. USbrian Chiem
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    1. PO
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    1. VO
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      1. POerror while running function
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    2. VO
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      1. POerror while running function
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      1. VTDownMod
    3. VO
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      1. VTDownMod
    1. COWhere's the error message?
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      1. UScreinig
    2. COwhat is `first`? where do you set up the data you work with in your test?
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      1. POerror while running function
      1. USMarco Forberg
    3. COat the assert check(); and lst1.removeAll(3); im not sure why. first is the first link in the linked list
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      1. POerror while running function
      1. USbrian Chiem
 

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