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53 lines
1.5 KiB
Java
53 lines
1.5 KiB
Java
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package org.thoughtcrime.securesms.util;
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import org.junit.Test;
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import java.util.Arrays;
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import java.util.List;
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import static org.junit.Assert.assertEquals;
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public class UtilTest {
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@Test
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public void chunk_oneChunk() {
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List<String> input = Arrays.asList("A", "B", "C");
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List<List<String>> output = Util.chunk(input, 3);
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assertEquals(1, output.size());
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assertEquals(input, output.get(0));
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output = Util.chunk(input, 4);
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assertEquals(1, output.size());
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assertEquals(input, output.get(0));
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output = Util.chunk(input, 100);
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assertEquals(1, output.size());
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assertEquals(input, output.get(0));
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}
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@Test
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public void chunk_multipleChunks() {
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List<String> input = Arrays.asList("A", "B", "C", "D", "E");
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List<List<String>> output = Util.chunk(input, 4);
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assertEquals(2, output.size());
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assertEquals(Arrays.asList("A", "B", "C", "D"), output.get(0));
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assertEquals(Arrays.asList("E"), output.get(1));
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output = Util.chunk(input, 2);
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assertEquals(3, output.size());
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assertEquals(Arrays.asList("A", "B"), output.get(0));
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assertEquals(Arrays.asList("C", "D"), output.get(1));
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assertEquals(Arrays.asList("E"), output.get(2));
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output = Util.chunk(input, 1);
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assertEquals(5, output.size());
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assertEquals(Arrays.asList("A"), output.get(0));
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assertEquals(Arrays.asList("B"), output.get(1));
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assertEquals(Arrays.asList("C"), output.get(2));
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assertEquals(Arrays.asList("D"), output.get(3));
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assertEquals(Arrays.asList("E"), output.get(4));
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}
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}
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