TestByteArrayUtils.java

package test.utils.codec;

import static org.hamcrest.Matchers.is;

import java.util.List;

import org.junit.Assert;
import org.junit.Test;

import com.firefly.utils.codec.ByteArrayUtils;

public class TestByteArrayUtils {
	@Test
	public void testSplitData() {
		byte[] data = "hello world!".getBytes();
		List<byte[]> list = ByteArrayUtils.splitData(data, 5);
		Assert.assertThat(list.size(), is(3));
		Assert.assertThat(new String(list.get(0)), is("hello"));
		Assert.assertThat(new String(list.get(1)), is(" worl"));
		Assert.assertThat(new String(list.get(2)), is("d!"));
		
		list = ByteArrayUtils.splitData(data, 6);
		Assert.assertThat(list.size(), is(2));
		
		list = ByteArrayUtils.splitData(data, 12);
		Assert.assertThat(list.size(), is(1));
		
		list = ByteArrayUtils.splitData(data, 5, 2);
		Assert.assertThat(list.size(), is(2));
		Assert.assertThat(new String(list.get(0)), is("hello"));
		Assert.assertThat(new String(list.get(1)), is(" world!"));
		
		list = ByteArrayUtils.splitData(data, 2, 3);
		Assert.assertThat(list.size(), is(3));
		Assert.assertThat(new String(list.get(0)), is("he"));
		Assert.assertThat(new String(list.get(1)), is("ll"));
		Assert.assertThat(new String(list.get(2)), is("o world!"));
		
		list = ByteArrayUtils.splitData(data, 12, 3);
		Assert.assertThat(list.size(), is(1));
		Assert.assertThat(new String(list.get(0)), is("hello world!"));
		
		list = ByteArrayUtils.splitData(data, 7, 4);
		Assert.assertThat(list.size(), is(2));
		Assert.assertThat(new String(list.get(0)), is("hello w"));
		Assert.assertThat(new String(list.get(1)), is("orld!"));
	}
}