/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.lucene.store;
import org.apache.lucene.store.IOContext;
import org.apache.lucene.store.IndexInput;
import org.apache.lucene.store.IndexOutput;
import org.apache.lucene.store.RAMDirectory;
import org.elasticsearch.test.ElasticsearchTestCase;
import org.junit.Test;
import java.io.IOException;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.lessThan;
/**
*
*/
public class InputStreamIndexInputTests extends ElasticsearchTestCase {
@Test
public void testSingleReadSingleByteLimit() throws IOException {
RAMDirectory dir = new RAMDirectory();
IndexOutput output = dir.createOutput("test", IOContext.DEFAULT);
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 1);
}
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 2);
}
output.close();
IndexInput input = dir.openInput("test", IOContext.DEFAULT);
for (int i = 0; i < 3; i++) {
InputStreamIndexInput is = new InputStreamIndexInput(input, 1);
assertThat(input.getFilePointer(), lessThan(input.length()));
assertThat(is.actualSizeToRead(), equalTo(1l));
assertThat(is.read(), equalTo(1));
assertThat(is.read(), equalTo(-1));
}
for (int i = 0; i < 3; i++) {
InputStreamIndexInput is = new InputStreamIndexInput(input, 1);
assertThat(input.getFilePointer(), lessThan(input.length()));
assertThat(is.actualSizeToRead(), equalTo(1l));
assertThat(is.read(), equalTo(2));
assertThat(is.read(), equalTo(-1));
}
assertThat(input.getFilePointer(), equalTo(input.length()));
InputStreamIndexInput is = new InputStreamIndexInput(input, 1);
assertThat(is.actualSizeToRead(), equalTo(0l));
assertThat(is.read(), equalTo(-1));
}
@Test
public void testReadMultiSingleByteLimit1() throws IOException {
RAMDirectory dir = new RAMDirectory();
IndexOutput output = dir.createOutput("test", IOContext.DEFAULT);
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 1);
}
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 2);
}
output.close();
IndexInput input = dir.openInput("test", IOContext.DEFAULT);
byte[] read = new byte[2];
for (int i = 0; i < 3; i++) {
assertThat(input.getFilePointer(), lessThan(input.length()));
InputStreamIndexInput is = new InputStreamIndexInput(input, 1);
assertThat(is.actualSizeToRead(), equalTo(1l));
assertThat(is.read(read), equalTo(1));
assertThat(read[0], equalTo((byte) 1));
}
for (int i = 0; i < 3; i++) {
assertThat(input.getFilePointer(), lessThan(input.length()));
InputStreamIndexInput is = new InputStreamIndexInput(input, 1);
assertThat(is.actualSizeToRead(), equalTo(1l));
assertThat(is.read(read), equalTo(1));
assertThat(read[0], equalTo((byte) 2));
}
assertThat(input.getFilePointer(), equalTo(input.length()));
InputStreamIndexInput is = new InputStreamIndexInput(input, 1);
assertThat(is.actualSizeToRead(), equalTo(0l));
assertThat(is.read(read), equalTo(-1));
}
@Test
public void testSingleReadTwoBytesLimit() throws IOException {
RAMDirectory dir = new RAMDirectory();
IndexOutput output = dir.createOutput("test", IOContext.DEFAULT);
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 1);
}
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 2);
}
output.close();
IndexInput input = dir.openInput("test", IOContext.DEFAULT);
assertThat(input.getFilePointer(), lessThan(input.length()));
InputStreamIndexInput is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(2l));
assertThat(is.read(), equalTo(1));
assertThat(is.read(), equalTo(1));
assertThat(is.read(), equalTo(-1));
assertThat(input.getFilePointer(), lessThan(input.length()));
is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(2l));
assertThat(is.read(), equalTo(1));
assertThat(is.read(), equalTo(2));
assertThat(is.read(), equalTo(-1));
assertThat(input.getFilePointer(), lessThan(input.length()));
is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(2l));
assertThat(is.read(), equalTo(2));
assertThat(is.read(), equalTo(2));
assertThat(is.read(), equalTo(-1));
assertThat(input.getFilePointer(), equalTo(input.length()));
is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(0l));
assertThat(is.read(), equalTo(-1));
}
@Test
public void testReadMultiTwoBytesLimit1() throws IOException {
RAMDirectory dir = new RAMDirectory();
IndexOutput output = dir.createOutput("test", IOContext.DEFAULT);
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 1);
}
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 2);
}
output.close();
IndexInput input = dir.openInput("test", IOContext.DEFAULT);
byte[] read = new byte[2];
assertThat(input.getFilePointer(), lessThan(input.length()));
InputStreamIndexInput is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(2l));
assertThat(is.read(read), equalTo(2));
assertThat(read[0], equalTo((byte) 1));
assertThat(read[1], equalTo((byte) 1));
assertThat(input.getFilePointer(), lessThan(input.length()));
is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(2l));
assertThat(is.read(read), equalTo(2));
assertThat(read[0], equalTo((byte) 1));
assertThat(read[1], equalTo((byte) 2));
assertThat(input.getFilePointer(), lessThan(input.length()));
is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(2l));
assertThat(is.read(read), equalTo(2));
assertThat(read[0], equalTo((byte) 2));
assertThat(read[1], equalTo((byte) 2));
assertThat(input.getFilePointer(), equalTo(input.length()));
is = new InputStreamIndexInput(input, 2);
assertThat(is.actualSizeToRead(), equalTo(0l));
assertThat(is.read(read), equalTo(-1));
}
@Test
public void testReadMultiFourBytesLimit() throws IOException {
RAMDirectory dir = new RAMDirectory();
IndexOutput output = dir.createOutput("test", IOContext.DEFAULT);
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 1);
}
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 2);
}
output.close();
IndexInput input = dir.openInput("test", IOContext.DEFAULT);
byte[] read = new byte[4];
assertThat(input.getFilePointer(), lessThan(input.length()));
InputStreamIndexInput is = new InputStreamIndexInput(input, 4);
assertThat(is.actualSizeToRead(), equalTo(4l));
assertThat(is.read(read), equalTo(4));
assertThat(read[0], equalTo((byte) 1));
assertThat(read[1], equalTo((byte) 1));
assertThat(read[2], equalTo((byte) 1));
assertThat(read[3], equalTo((byte) 2));
assertThat(input.getFilePointer(), lessThan(input.length()));
is = new InputStreamIndexInput(input, 4);
assertThat(is.actualSizeToRead(), equalTo(2l));
assertThat(is.read(read), equalTo(2));
assertThat(read[0], equalTo((byte) 2));
assertThat(read[1], equalTo((byte) 2));
assertThat(input.getFilePointer(), equalTo(input.length()));
is = new InputStreamIndexInput(input, 4);
assertThat(is.actualSizeToRead(), equalTo(0l));
assertThat(is.read(read), equalTo(-1));
}
@Test
public void testMarkRest() throws Exception {
RAMDirectory dir = new RAMDirectory();
IndexOutput output = dir.createOutput("test", IOContext.DEFAULT);
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 1);
}
for (int i = 0; i < 3; i++) {
output.writeByte((byte) 2);
}
output.close();
IndexInput input = dir.openInput("test", IOContext.DEFAULT);
InputStreamIndexInput is = new InputStreamIndexInput(input, 4);
assertThat(is.markSupported(), equalTo(true));
assertThat(is.read(), equalTo(1));
assertThat(is.read(), equalTo(1));
is.mark(0);
assertThat(is.read(), equalTo(1));
assertThat(is.read(), equalTo(2));
is.reset();
assertThat(is.read(), equalTo(1));
assertThat(is.read(), equalTo(2));
}
}