wipHEADmaster

3 files changed, 103 insertions, 19 deletions

diff --git a/src/test/java/io/trygvis/btree/BtreeMapTest.java b/src/test/java/io/trygvis/btree/BtreeMapTest.java
new file mode 100644
index 0000000..3c771a8
--- /dev/null
+++ b/src/test/java/io/trygvis/btree/BtreeMapTest.java
@@ -0,0 +1,45 @@
+package io.trygvis.btree;
+
+import org.junit.Test;
+
+import java.io.File;
+import java.nio.ByteBuffer;
+
+import static io.trygvis.btree.Bits.intFromBytes;
+import static io.trygvis.btree.HeapTest.Person.randomPerson;
+import static io.trygvis.btree.TestUtils.deleteFile;
+
+public class BtreeMapTest {
+
+    @Test
+    public void testBasic() throws Exception {
+        File f = new File("target/btreemap");
+        BtreeMap<Integer, HeapTest.Person> map = new BtreeMap<>(new BtreeFile(new HeapFile(128, deleteFile(f)), 4), new IntegerSerializer(), new PersonSerializer());
+
+        map.put(1, randomPerson());
+    }
+
+    private static class IntegerSerializer implements BtreeMap.Serializer<Integer> {
+        @Override
+        public byte[] toBytes(Integer integer) {
+            return Bits.toBytes(integer);
+        }
+
+        @Override
+        public Integer fromBytes(byte[] bytes) {
+            return intFromBytes(bytes);
+        }
+    }
+
+    private static class PersonSerializer implements BtreeMap.Serializer<HeapTest.Person> {
+        @Override
+        public byte[] toBytes(HeapTest.Person person) {
+            return person.toBytes();
+        }
+
+        @Override
+        public HeapTest.Person fromBytes(byte[] bytes) {
+            return HeapTest.Person.fromBytes(ByteBuffer.wrap(bytes));
+        }
+    }
+}
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());
         }
diff --git a/src/test/java/io/trygvis/btree/HeapTest.java b/src/test/java/io/trygvis/btree/HeapTest.java
index 1d724f4..48a1463 100644
--- a/src/test/java/io/trygvis/btree/HeapTest.java
+++ b/src/test/java/io/trygvis/btree/HeapTest.java
@@ -4,6 +4,8 @@ import org.junit.Test;
 
 import java.io.File;
 import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Random;
 
 import static io.trygvis.btree.HeapTest.Person.randomPerson;
@@ -14,6 +16,8 @@ public class HeapTest {
 
     @Test
     public void testHeap() throws Exception {
+        List<Person> persons = new ArrayList<Person>();
+
         File f = new File("target/heapTest");
 
         HeapFile file = new HeapFile(128, deleteFile(f));
@@ -23,6 +27,7 @@ public class HeapTest {
         int pageNo = 0;
         for (int i = 0; i < 10; i++) {
             Person p = randomPerson();
+            persons.add(p);
 
             byte[] bytes = p.toBytes();
 
@@ -47,13 +52,15 @@ public class HeapTest {
 
         System.out.println("file.pageCount() = " + file.pageCount());
 
+        int counter = 0;
         for (int i = 0; i < file.pageCount(); i++) {
             System.out.println("page #" + i);
             page = file.loadPage(i);
 
-            for (ByteBuffer buffer : page.bufferIterator()) {
+            for (ByteBuffer buffer : page.items()) {
                 Person p = Person.fromBytes(buffer);
                 System.out.println("p = " + p);
+                assertEquals(persons.get(counter++), p);
             }
         }
     }
@@ -91,6 +98,23 @@ public class HeapTest {
                     '}';
         }
 
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (!(o instanceof Person)) return false;
+
+            Person person = (Person) o;
+
+            return age == person.age && name.equals(person.name);
+        }
+
+        @Override
+        public int hashCode() {
+            int result = name.hashCode();
+            result = 31 * result + age;
+            return result;
+        }
+
         private final static Random r = new Random(0);
         private final static String[] names = new String[]{
                 "Lukas", "Emil", "Mathias", "Jonas", "Aleksander", "William", "Oskar", "Magnus", "Markus", "Oliver",