OpenSearch/src/test/java/org/elasticsearch/common/compress/CompressedStringTests.java

/*
 * 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.compress;

import org.apache.lucene.util.TestUtil;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.test.ElasticsearchTestCase;
import org.junit.Test;

import java.io.IOException;
import java.util.Random;

import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.not;

/**
 *
 */
public class CompressedStringTests extends ElasticsearchTestCase {

    @Test
    public void simpleTestsLZF() throws IOException {
        simpleTests("lzf");
    }

    public void simpleTests(String compressor) throws IOException {
        CompressorFactory.configure(ImmutableSettings.settingsBuilder().put("compress.default.type", compressor).build());
        String str = "this is a simple string";
        CompressedString cstr = new CompressedString(str);
        assertThat(cstr.string(), equalTo(str));
        assertThat(new CompressedString(str), equalTo(cstr));

        String str2 = "this is a simple string 2";
        CompressedString cstr2 = new CompressedString(str2);
        assertThat(cstr2.string(), not(equalTo(str)));
        assertThat(new CompressedString(str2), not(equalTo(cstr)));
        assertThat(new CompressedString(str2), equalTo(cstr2));
    }
    
    public void testRandom() throws IOException {
        String compressor = "lzf";
        CompressorFactory.configure(ImmutableSettings.settingsBuilder().put("compress.default.type", compressor).build());
        Random r = getRandom();
        for (int i = 0; i < 2000; i++) {
            String string = TestUtil.randomUnicodeString(r, 10000);
            CompressedString compressedString = new CompressedString(string);
            assertThat(compressedString.string(), equalTo(string));
        }
    }
}