diff --git a/js/binary/reader_test.js b/js/binary/reader_test.js index 6f7e5d456..db674cf8e 100644 --- a/js/binary/reader_test.js +++ b/js/binary/reader_test.js @@ -359,6 +359,58 @@ describe('binaryReaderTest', function() { }); + /** + * Tests reading a field from hexadecimal string (format: '08 BE EF'). + * @param {Function} readField + * @param {number} expected + * @param {string} hexString + */ + function doTestHexStringVarint_(readField, expected, hexString) { + var bytesCount = (hexString.length + 1) / 3; + var bytes = new Uint8Array(bytesCount); + for (var i = 0; i < bytesCount; i++) { + byte = parseInt(hexString.substring(i * 3, i * 3 + 2), 16); + bytes[i] = byte; + } + var reader = jspb.BinaryReader.alloc(bytes); + reader.nextField(); + assertEquals(expected, readField.call(reader)); + } + + + /** + * Tests non-canonical redundant varint decoding. + */ + it('testRedundantVarintFields', function() { + assertNotNull(jspb.BinaryReader.prototype.readUint32); + assertNotNull(jspb.BinaryReader.prototype.readUint64); + assertNotNull(jspb.BinaryReader.prototype.readSint32); + assertNotNull(jspb.BinaryReader.prototype.readSint64); + + // uint32 and sint32 take no more than 5 bytes + // 08 - field prefix (type = 0 means varint) + doTestHexStringVarint_( + jspb.BinaryReader.prototype.readUint32, + 12, '08 8C 80 80 80 00'); + + // 11 stands for -6 in zigzag encoding + doTestHexStringVarint_( + jspb.BinaryReader.prototype.readSint32, + -6, '08 8B 80 80 80 00'); + + // uint64 and sint64 take no more than 10 bytes + // 08 - field prefix (type = 0 means varint) + doTestHexStringVarint_( + jspb.BinaryReader.prototype.readUint64, + 12, '08 8C 80 80 80 80 80 80 80 80 00'); + + // 11 stands for -6 in zigzag encoding + doTestHexStringVarint_( + jspb.BinaryReader.prototype.readSint64, + -6, '08 8B 80 80 80 80 80 80 80 80 00'); + }); + + /** * Tests 64-bit fields that are handled as strings. */