Add unit tests for Base32 encoding and decoding.

parent 0825e77d
Pipeline #3292 passed with stage
in 6 minutes and 17 seconds
package org.briarproject.bramble.util;
import org.briarproject.bramble.test.BrambleTestCase;
import org.junit.Test;
import java.util.Random;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
public class Base32Test extends BrambleTestCase {
// Test vectors from RFC 4648
// https://tools.ietf.org/html/rfc4648#section-10
@Test
public void testEncoding() {
assertEquals("", Base32.encode(new byte[0]));
assertEquals("MY", Base32.encode(new byte[] {'f'}));
assertEquals("MZXQ", Base32.encode(new byte[] {'f', 'o'}));
assertEquals("MZXW6", Base32.encode(new byte[] {'f', 'o', 'o'}));
assertEquals("MZXW6YQ", Base32.encode(new byte[] {'f', 'o', 'o', 'b'}));
assertEquals("MZXW6YTB",
Base32.encode(new byte[] {'f', 'o', 'o', 'b', 'a'}));
assertEquals("MZXW6YTBOI",
Base32.encode(new byte[] {'f', 'o', 'o', 'b', 'a', 'r'}));
}
@Test
public void testStrictDecoding() {
testDecoding(true);
}
@Test
public void testNonStrictDecoding() {
testDecoding(false);
}
private void testDecoding(boolean strict) {
assertArrayEquals(new byte[0], Base32.decode("", strict));
assertArrayEquals(new byte[] {'f'}, Base32.decode("MY", strict));
assertArrayEquals(new byte[] {'f', 'o'}, Base32.decode("MZXQ", strict));
assertArrayEquals(new byte[] {'f', 'o', 'o'},
Base32.decode("MZXW6", strict));
assertArrayEquals(new byte[] {'f', 'o', 'o', 'b'},
Base32.decode("MZXW6YQ", strict));
assertArrayEquals(new byte[] {'f', 'o', 'o', 'b', 'a'},
Base32.decode("MZXW6YTB", strict));
assertArrayEquals(new byte[] {'f', 'o', 'o', 'b', 'a', 'r'},
Base32.decode("MZXW6YTBOI", strict));
}
@Test(expected = IllegalArgumentException.class)
public void testStrictDecodingRejectsNonZeroUnusedBits() {
Base32.decode("MZ", true);
}
@Test
public void testNonStrictDecodingAcceptsNonZeroUnusedBits() {
assertArrayEquals(new byte[] {'f'}, Base32.decode("MZ", false));
}
@Test
public void testRoundTrip() {
Random random = new Random();
byte[] data = new byte[100 + random.nextInt(100)];
random.nextBytes(data);
assertArrayEquals(data, Base32.decode(Base32.encode(data), true));
assertArrayEquals(data, Base32.decode(Base32.encode(data), false));
}
}
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