From 67c42358e2940a166649b95a871ae7e47fb3ef17 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Fri, 27 Sep 2013 21:47:01 +0200
Subject: wip

---
 src/test/java/io/trygvis/btree/HeapPageTest.java | 51 +++++++++++++++---------
 1 file changed, 33 insertions(+), 18 deletions(-)

(limited to 'src/test/java/io/trygvis/btree/HeapPageTest.java')

diff --git a/src/test/java/io/trygvis/btree/HeapPageTest.java b/src/test/java/io/trygvis/btree/HeapPageTest.java
index e845a16..b158880 100644
--- a/src/test/java/io/trygvis/btree/HeapPageTest.java
+++ b/src/test/java/io/trygvis/btree/HeapPageTest.java
@@ -3,7 +3,9 @@ package io.trygvis.btree;
 import org.junit.Test;
 
 import java.nio.ByteBuffer;
+import java.util.ArrayList;
 import java.util.Iterator;
+import java.util.List;
 
 import static io.trygvis.btree.HeapPage.*;
 import static org.junit.Assert.*;
@@ -19,30 +21,43 @@ public class HeapPageTest {
         HeapPage page = HeapPage.blankHeapPage(buffer);
         assertEquals(pageSize - headerSize, page.bytesFree());
 
-        int itemCount = 6;
-        byte[] object = new byte[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
+        List<byte[]> objects = new ArrayList<>();
+        byte[] appendObject = new byte[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
+        int objectSize = 16;
 
-        for (int i = 0; i < itemCount; i++) {
-            page.append(object);
-            assertEquals("i=" + i, pageSize - headerSize - (object.length + itemSize) * (i + 1), page.bytesFree());
+        for (int i = 0; i < 5; i++) {
+            page.append(appendObject);
+            objects.add(appendObject);
+            assertEquals("i=" + i, pageSize - headerSize - (appendObject.length + itemSize) * (i + 1), page.bytesFree());
         }
 
-        try {
-            page.append(object);
-            fail("Expected PageOverflowException");
-        } catch (PageOverflowException e) {
-            assertEquals(pageSize - headerSize - itemCount * (object.length + itemSize), e.bytesFree);
-            assertEquals(object.length, e.bytesRequested);
+        byte[] prependObject = new byte[]{0xf, 0xe, 0xd, 0xc, 0xb, 0xa, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+        page.prepend(prependObject);
+        objects.add(0, prependObject);
+
+//        try {
+//            page.append(object);
+//            fail("Expected PageOverflowException");
+//        } catch (PageOverflowException e) {
+//            assertEquals(pageSize - headerSize - objects.size() * (object.length + objects.size()), e.bytesFree);
+//            assertEquals(object.length, e.bytesRequested);
+//        }
+
+        for (byte[] object : objects) {
+            for (byte b : object) {
+                System.out.print(Integer.toHexString(b));
+            }
+            System.out.println();
         }
 
         {
             ByteBuffer expectedBuffer = ByteBuffer.allocate(pageSize);
-            int position = pageSize - itemCount * (object.length + itemSize);
+            int position = pageSize - objects.size() * (objectSize + itemSize);
             expectedBuffer.putInt(position);
             expectedBuffer.position(position);
-            for (int i = 0; i < itemCount; i++) {
-                expectedBuffer.put(object);
-                expectedBuffer.putInt(object.length);
+            for (byte[] o : objects) {
+                expectedBuffer.put(o);
+                expectedBuffer.putInt(objectSize);
             }
             assertEquals(pageSize, expectedBuffer.position());
 
@@ -52,11 +67,11 @@ public class HeapPageTest {
         }
 
         {
-            Iterator<ByteBuffer> it = page.bufferIterator().iterator();
-            for (int i = 0; i < itemCount; i++) {
+            Iterator<ByteBuffer> it = page.items().iterator();
+            for (byte[] o : objects) {
                 assertTrue(it.hasNext());
                 ByteBuffer bb = it.next();
-                assertArrayEquals(object, toArray(bb));
+                assertArrayEquals(o, toArray(bb));
             }
             assertFalse(it.hasNext());
         }
-- 
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