/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * 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.
 */

/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.core.internal.io;

import org.opensearch.common.util.io.Streams;
import org.opensearch.test.OpenSearchTestCase;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;

import static org.hamcrest.Matchers.equalTo;

public class StreamsTests extends OpenSearchTestCase {
    public void testCopyFromInputStream() throws IOException {
        byte[] content = "content".getBytes(StandardCharsets.UTF_8);
        ByteArrayInputStream in = new ByteArrayInputStream(content);
        ByteArrayOutputStream out = new ByteArrayOutputStream(content.length);
        long count = Streams.copy(in, out);

        assertThat(count, equalTo((long) content.length));
        assertThat(Arrays.equals(content, out.toByteArray()), equalTo(true));
    }
}
