moar unit tests and documentation

src/main/java/com/redhat/trie/NodeContext.java

@@ -22,17 +22,35 @@ package com.redhat.trie;
 public class NodeContext {
     private long nodeId = 0;
     
+    /**
+     * Constructs with an id of 0
+     */
     public NodeContext() {
     }
 
+    /**
+     * Constructs with provided startId
+     *
+     * @param startId   long of the id to start at
+     */
     public NodeContext(long startId) {
         this.nodeId = startId;
     }
 
+    /**
+     * current context id
+     *
+     * @return      long of current id position
+     */
     public long getId() {
         return this.nodeId;
     }
 
+    /**
+     * get current context id, and increment the id
+     *
+     * @return      long of current id position
+     */
     public long nextId() {
         return this.nodeId++;
     }

src/test/java/com/redhat/trie/TestHuffNode.java

@@ -3,16 +3,69 @@ package com.redhat.trie;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 
 import org.junit.Test;
 
 public class TestHuffNode {
 
     @Test
-    public void testNew(){
-        HuffNode hn = new HuffNode(new Object(), 1);
+    public void testNew0(){
+        HuffNode hn = new HuffNode(new Object(), 0);
         assertNotNull(hn);
     }
+
+    @Test
+    public void testNew1(){
+        HuffNode hn = new HuffNode(new NodeContext(), new Object(), 0);
+        assertNotNull(hn);
+    }
+
+    @Test
+    public void testNew2(){
+        HuffNode hn = new HuffNode(new Object(),
+                                   0,
+                                   new HuffNode(new Object(), 1),
+                                   new HuffNode(new Object(), 2));
+        assertNotNull(hn);
+    }
+
+    @Test
+    public void testNew3(){
+        HuffNode hn = new HuffNode(new NodeContext(),
+                                   new Object(),
+                                   0,
+                                   new HuffNode(new Object(), 1),
+                                   new HuffNode(new Object(), 2));
+        assertNotNull(hn);
+    }
+
+    @Test
+    public void testWeight(){
+        HuffNode hn = new HuffNode(new Object(),
+                                   1,
+                                   new HuffNode(new Object(), 2),
+                                   new HuffNode(new Object(), 3));
+        assertEquals(hn.getWeight(), 1);
+        assertEquals(hn.getLeft().getWeight(), 2);
+        assertEquals(hn.getRight().getWeight(), 3);
+    }
+
+    @Test
+    public void testValue(){
+        HuffNode hn = new HuffNode(new Object(), 1);
+        assertTrue(hn.getValue() instanceof Object);
+    }
+
+    @Test
+    public void testCtx(){
+        NodeContext ctx = new NodeContext(0);
+        HuffNode hn = new HuffNode(ctx, new Object(), 0);
+        assertEquals(hn.getContext(), ctx);
+
+        // it's +1 because the HuffNode will have run ctx.nextId()
+        assertEquals(hn.getContext().getId(), 1);
+    }
 }
 
 

src/test/java/com/redhat/trie/TestNodeContext.java

@@ -17,6 +17,7 @@ public class TestNodeContext {
     public void testNew2() {
         NodeContext nc = new NodeContext(1);
         assertNotNull(nc);
+        assertEquals(nc.getId(), 1);
     }
 
     @Test
@@ -24,9 +25,9 @@ public class TestNodeContext {
         NodeContext nc = new NodeContext();
         assertEquals(nc.getId(), 0);
 
-        long next = nc.nextId();
+        long curr = nc.nextId();
         assertEquals(nc.getId(), 1);
-        assertEquals(nc.getId(), (next + 1));
+        assertEquals(nc.getId(), (curr + 1));
     }
 }