1 /* 2 * Copyright (c) Facebook, Inc. and its affiliates. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.facebook.jni; 18 19 import static org.assertj.core.api.Assertions.assertThat; 20 21 import java.nio.Buffer; 22 import java.nio.ByteBuffer; 23 import java.nio.ByteOrder; 24 import java.nio.FloatBuffer; 25 import org.junit.Test; 26 27 public class ByteBufferTests extends BaseFBJniTests { 28 @Test testDirectByteBuffer()29 public void testDirectByteBuffer() { 30 assertThat(nativeTestDirectByteBuffer()).isTrue(); 31 } 32 nativeTestDirectByteBuffer()33 public static native boolean nativeTestDirectByteBuffer(); 34 35 @Test testEmptyDirectByteBuffer()36 public void testEmptyDirectByteBuffer() { 37 assertThat(nativeTestEmptyDirectByteBuffer()).isTrue(); 38 } 39 nativeTestEmptyDirectByteBuffer()40 public static native boolean nativeTestEmptyDirectByteBuffer(); 41 42 @Test testRewindBuffer()43 public void testRewindBuffer() { 44 assertThat(nativeTestRewindBuffer()).isTrue(); 45 } 46 nativeTestRewindBuffer()47 public native boolean nativeTestRewindBuffer(); 48 49 @Test testAllocateDirect()50 public void testAllocateDirect() { 51 ByteBuffer buffer = nativeAllocateDirect(5); 52 assertThat(buffer.isDirect()).isTrue(); 53 assertThat(buffer.capacity()).isEqualTo(5); 54 } 55 nativeAllocateDirect(int size)56 public native ByteBuffer nativeAllocateDirect(int size); 57 58 // called from native writeBytes(ByteBuffer dest, byte a, byte b, byte c, byte d)59 public static void writeBytes(ByteBuffer dest, byte a, byte b, byte c, byte d) { 60 dest.put(a).put(b).put(c).put(d); 61 } 62 63 @Test testFloatBuffer()64 public void testFloatBuffer() { 65 final int BUFFER_COUNT = 5; 66 final int FLOAT_SIZE = 4; 67 FloatBuffer buffer = 68 ByteBuffer.allocateDirect(BUFFER_COUNT * FLOAT_SIZE) 69 .order(ByteOrder.nativeOrder()) 70 .asFloatBuffer(); 71 buffer.put(1f); 72 buffer.put(2f); 73 buffer.put(2.5f); 74 buffer.put(2.75f); 75 buffer.put(3f); 76 assertThat(nativeTestFloatBuffer(buffer)).isTrue(); 77 } 78 nativeTestFloatBuffer(Buffer buffer)79 public native boolean nativeTestFloatBuffer(Buffer buffer); 80 81 @Test testByteBufferOrder()82 public void testByteBufferOrder() { 83 ByteBuffer buffer = nativeByteBufferOrder(); 84 assertThat(buffer.getInt()).isEqualTo(1); 85 } 86 nativeByteBufferOrder()87 public native ByteBuffer nativeByteBufferOrder(); 88 } 89