import quincy 17.2.0

[ceph.git] / ceph / src / arrow / java / memory / memory-core / src / test / java / org / apache / arrow / memory / TestArrowBuf.java

diff --git a/ceph/src/arrow/java/memory/memory-core/src/test/java/org/apache/arrow/memory/TestArrowBuf.java b/ceph/src/arrow/java/memory/memory-core/src/test/java/org/apache/arrow/memory/TestArrowBuf.java
new file mode 100644 (file)
index 0000000..ea74f21
--- /dev/null
+++ b/ceph/src/arrow/java/memory/memory-core/src/test/java/org/apache/arrow/memory/TestArrowBuf.java
@@ -0,0 +1,149 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.arrow.memory;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Arrays;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class TestArrowBuf {
+
+  private static final int MAX_ALLOCATION = 8 * 1024;
+  private static RootAllocator allocator;
+
+  @BeforeClass
+  public static void beforeClass() {
+    allocator = new RootAllocator(MAX_ALLOCATION);
+  }
+
+  /** Ensure the allocator is closed. */
+  @AfterClass
+  public static void afterClass() {
+    if (allocator != null) {
+      allocator.close();
+    }
+  }
+
+  @Test(expected = IndexOutOfBoundsException.class)
+  public void testSliceOutOfBoundsLength_RaisesIndexOutOfBoundsException() {
+    try (BufferAllocator allocator = new RootAllocator(128);
+         ArrowBuf buf = allocator.buffer(2)
+    ) {
+      assertEquals(2, buf.capacity());
+      buf.slice(0, 3);
+    }
+  }
+
+  @Test(expected = IndexOutOfBoundsException.class)
+  public void testSliceOutOfBoundsIndexPlusLength_RaisesIndexOutOfBoundsException() {
+    try (BufferAllocator allocator = new RootAllocator(128);
+         ArrowBuf buf = allocator.buffer(2)
+    ) {
+      assertEquals(2, buf.capacity());
+      buf.slice(1, 2);
+    }
+  }
+
+  @Test(expected = IndexOutOfBoundsException.class)
+  public void testSliceOutOfBoundsIndex_RaisesIndexOutOfBoundsException() {
+    try (BufferAllocator allocator = new RootAllocator(128);
+         ArrowBuf buf = allocator.buffer(2)
+    ) {
+      assertEquals(2, buf.capacity());
+      buf.slice(3, 0);
+    }
+  }
+
+  @Test
+  public void testSliceWithinBoundsLength_ReturnsSlice() {
+    try (BufferAllocator allocator = new RootAllocator(128);
+         ArrowBuf buf = allocator.buffer(2)
+    ) {
+      assertEquals(2, buf.capacity());
+      assertEquals(1, buf.slice(1, 1).capacity());
+      assertEquals(2, buf.slice(0, 2).capacity());
+    }
+  }
+
+  @Test
+  public void testSetBytesSliced() {
+    int arrLength = 64;
+    byte[] expected = new byte[arrLength];
+    for (int i = 0; i < expected.length; i++) {
+      expected[i] = (byte) i;
+    }
+    ByteBuffer data = ByteBuffer.wrap(expected);
+    try (ArrowBuf buf = allocator.buffer(expected.length)) {
+      buf.setBytes(0, data, 0, data.capacity());
+
+      byte[] actual = new byte[expected.length];
+      buf.getBytes(0, actual);
+      assertArrayEquals(expected, actual);
+    }
+  }
+
+  @Test
+  public void testSetBytesUnsliced() {
+    int arrLength = 64;
+    byte[] arr = new byte[arrLength];
+    for (int i = 0; i < arr.length; i++) {
+      arr[i] = (byte) i;
+    }
+    ByteBuffer data = ByteBuffer.wrap(arr);
+
+    int from = 10;
+    int to = arrLength;
+    byte[] expected = Arrays.copyOfRange(arr, from, to);
+    try (ArrowBuf buf = allocator.buffer(expected.length)) {
+      buf.setBytes(0, data, from, to - from);
+
+      byte[] actual = new byte[expected.length];
+      buf.getBytes(0, actual);
+      assertArrayEquals(expected, actual);
+    }
+  }
+
+  /** ARROW-9221: guard against big-endian byte buffers. */
+  @Test
+  public void testSetBytesBigEndian() {
+    final byte[] expected = new byte[64];
+    for (int i = 0; i < expected.length; i++) {
+      expected[i] = (byte) i;
+    }
+    // Only this code path is susceptible: others use unsafe or byte-by-byte copies, while this override copies longs.
+    final ByteBuffer data = ByteBuffer.wrap(expected).asReadOnlyBuffer();
+    assertFalse(data.hasArray());
+    assertFalse(data.isDirect());
+    assertEquals(ByteOrder.BIG_ENDIAN, data.order());
+    try (ArrowBuf buf = allocator.buffer(expected.length)) {
+      buf.setBytes(0, data);
+      byte[] actual = new byte[expected.length];
+      buf.getBytes(0, actual);
+      assertArrayEquals(expected, actual);
+    }
+  }
+
+}