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package model.asn1;
import model.asn1.exceptions.ParseException;
import model.asn1.parsing.BytesReader;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
public class BitStringTest {
@Test
void testConstructor() {
assertArrayEquals(new Byte[]{ 0x2, 0x3 },
new BitString(BitString.TAG, null, 0, new Byte[]{ 0x2, 0x3 })
.getVal());
assertEquals(3,
new BitString(BitString.TAG, null, 3, new Byte[]{ 0x2, 0x8 })
.getUnused());
}
@Test
void testConvert() {
// 00000010 00001000
// 00000000 01000001 = 65
assertArrayEquals(new Byte[]{ 65 },
new BitString(BitString.TAG, null, 3, new Byte[]{ 0x2, 0x8 })
.getConvertedVal());
assertArrayEquals(new Byte[]{ 0x2, 0x8 },
new BitString(BitString.TAG, null, 0, new Byte[]{ 0x2, 0x8 })
.getConvertedVal());
}
@Test
void testParse() throws ParseException {
assertArrayEquals(new Byte[]{ 0x6e, 0x5d, -64 },
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x06, 0x6e, 0x5d, -64 }), false)
.getVal());
assertEquals(6,
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x06, 0x6e, 0x5d, -64 }), false)
.getUnused());
assertArrayEquals(new Byte[]{ 0x01, -71, 0x77 },
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x06, 0x6e, 0x5d, -64 }), false)
.getConvertedVal());
}
@Test
void testParseFail() {
assertThrows(ParseException.class, () ->
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04 }), false));
// 0b11100000
assertThrows(ParseException.class, () ->
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x06, 0x6e, 0x5d, -32 }), false));
// 0b11000001
assertThrows(ParseException.class, () ->
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x06, 0x6e, 0x5d, -63 }), false));
// Unused bits = 8
assertThrows(ParseException.class, () ->
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x08, 0x6e, 0x5d, -64 }), false));
// Unused bits = 6 -> 7
assertThrows(ParseException.class, () ->
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x07, 0x6e, 0x5d, -64 }), false));
// Illegal unused bits: 8 and -1
assertThrows(ParseException.class, () ->
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x08, 0x6e, 0x5d, -64 }), false));
assertThrows(ParseException.class, () ->
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, -1, 0x6e, 0x5d, -64 }), false));
}
@Test
void testEncode() throws ParseException {
assertArrayEquals(new Byte[]{ 0x03, 0x04, 0x06, 0x6e, 0x5d, -64 },
new BitString(new BytesReader(new Byte[]{ 0x03, 0x04, 0x06, 0x6e, 0x5d, -64 }), false)
.encodeDER());
}
}
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