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BlockReaderTest.java
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79 lines (67 loc) · 2.44 KB
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package org.simdjson;
import org.junit.jupiter.api.Test;
import java.util.Arrays;
import static org.assertj.core.api.Assertions.assertThat;
public class BlockReaderTest {
@Test
public void iterateOverEntireBuffer() {
// given
int stepSize = 64;
int fullBlockCount = 2;
byte[] buffer = new byte[fullBlockCount * stepSize + stepSize / 2];
Arrays.fill(buffer, (byte) 'a');
BlockReader reader = new BlockReader(stepSize);
reader.reset(buffer, buffer.length);
// when / then
for (int i = 0; i < fullBlockCount; i++) {
assertThat(reader.hasFullBlock()).isTrue();
assertThat(reader.getBlockIndex()).isEqualTo(i * stepSize);
reader.advance();
assertThat(reader.getBlockIndex()).isEqualTo((i + 1) * stepSize);
}
assertThat(reader.hasFullBlock()).isFalse();
byte[] remainder = reader.remainder();
assertThat(remainder.length).isEqualTo(stepSize);
}
@Test
public void lastBlockIsTreatedAsRemainder() {
// given
int stepSize = 64;
int blockCount = 2;
byte[] buffer = new byte[blockCount * stepSize];
Arrays.fill(buffer, (byte) 'a');
BlockReader reader = new BlockReader(stepSize);
reader.reset(buffer, buffer.length);
assertThat(reader.hasFullBlock()).isTrue();
// when
reader.advance();
// then
assertThat(reader.hasFullBlock()).isFalse();
byte[] remainder = reader.remainder();
assertThat(remainder.length).isEqualTo(stepSize);
for (int i = 0; i < remainder.length; i++) {
assertThat(remainder[i]).isEqualTo(buffer[i]);
}
}
@Test
public void remainderShouldBeFilledWithSpaces() {
// given
int stepSize = 64;
byte[] buffer = new byte[stepSize / 2];
Arrays.fill(buffer, (byte) 'a');
BlockReader reader = new BlockReader(stepSize);
reader.reset(buffer, buffer.length);
assertThat(reader.hasFullBlock()).isFalse();
// when
byte[] remainder = reader.remainder();
// then
assertThat(remainder.length).isEqualTo(stepSize);
for (int i = 0; i < remainder.length; i++) {
if (i < buffer.length) {
assertThat(remainder[i]).isEqualTo(buffer[i]);
} else {
assertThat(remainder[i]).isEqualTo((byte) 0x20);
}
}
}
}