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io: Handle big-endian in ByteStream

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This commit is contained in:
Jeff Schiller 2023-12-25 14:17:10 -08:00
parent 6d1d33e970
commit cb95ddc3ef
2 changed files with 44 additions and 1 deletions
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25
tests/io-bytestream.spec.js
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@ -62,6 +62,31 @@ describe('bitjs.io.ByteStream', () => {
expect(() => stream.readNumber(1)).to.throw();
});
it('PeekAndRead_MultiByteNumber_BigEndian', () => {
array[3] = (1234 & 0xff);
array[2] = ((1234 >> 8) & 0xff);
const stream = new ByteStream(array.buffer);
stream.setBigEndian();
expect(stream.peekNumber(4)).equals(1234);
expect(stream.readNumber(4)).equals(1234);
expect(() => stream.readNumber(1)).to.throw();
});
it('PeekAndRead_MultiByteNumber_MultiEndian', () => {
array[1] = (4567 & 0xff);
array[0] = ((4567 >> 8) & 0xff);
array[2] = (1234 & 0xff);
array[3] = ((1234 >> 8) & 0xff);
const stream = new ByteStream(array.buffer);
stream.setBigEndian();
expect(stream.peekNumber(2)).equals(4567);
expect(stream.readNumber(2)).equals(4567);
stream.setLittleEndian();
expect(stream.peekNumber(2)).equals(1234);
expect(stream.readNumber(2)).equals(1234);
expect(() => stream.readNumber(1)).to.throw();
});
it('PeekAndRead_SingleByteSignedNumber', () => {
array[0] = -120;
const stream = new ByteStream(array.buffer);