/* * Copyright (c) Facebook, Inc. and its affiliates. * * Licensed 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 com.facebook.jni; import static org.assertj.core.api.Assertions.assertThat; import java.nio.ByteBuffer; import java.nio.channels.ReadableByteChannel; import java.util.Arrays; import org.junit.Test; public class ReadableByteChannelTests extends BaseFBJniTests { private static final byte[] data = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, }; @Test public void testSmallRead() { byte[] testData = Arrays.copyOf(data, 8); ReadableByteChannel channel = new TestChannel(testData); assertThat(nativeTestSmallRead(channel, testData)).isTrue(); } public static native boolean nativeTestSmallRead(ReadableByteChannel channel, byte[] data); @Test public void testReadToBufferCapacity() { ReadableByteChannel channel = new TestChannel(data); assertThat(nativeTestReadToBufferCapacity(channel, data)).isTrue(); } public static native boolean nativeTestReadToBufferCapacity( ReadableByteChannel channel, byte[] data); @Test public void testConsumeChannel() { ReadableByteChannel channel = new TestChannel(data); assertThat(nativeTestConsumeChannel(channel, data)).isTrue(); } public static native boolean nativeTestConsumeChannel(ReadableByteChannel channel, byte[] data); @Test public void testConsumeChannelIteratively() { ReadableByteChannel channel = new TestChannel(data); assertThat(nativeTestConsumeChannelIteratively(channel, data)).isTrue(); } public static native boolean nativeTestConsumeChannelIteratively( ReadableByteChannel channel, byte[] data); private static class TestChannel implements ReadableByteChannel { private final byte[] data; private int offset = 0; TestChannel(byte[] data) { this.data = data; } @Override public int read(ByteBuffer buffer) { if (offset >= data.length) { return -1; } int n = Math.min(buffer.remaining(), data.length - offset); int start = offset; offset += n; buffer.put(Arrays.copyOfRange(data, start, offset)); return n; } @Override public boolean isOpen() { return true; } @Override public void close() {} } }