TestAutoExpandingBuffer.java

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 * regarding copyright ownership. The ASF 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
 *
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package org.apache.thrift.transport;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;

public class TestAutoExpandingBuffer {
  @Test
  public void testExpands() throws Exception {
    // has expected initial capacity
    AutoExpandingBuffer b = new AutoExpandingBuffer(10);
    assertEquals(10, b.array().length);

    // doesn't shrink
    b.resizeIfNecessary(8);
    assertEquals(10, b.array().length);

    // grows when more capacity is needed
    b.resizeIfNecessary(100);
    assertTrue(b.array().length >= 100);
  }
}