You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
70 lines
2.4 KiB
70 lines
2.4 KiB
import 'dart:typed_data';
|
|
|
|
import 'package:flutter_test/flutter_test.dart';
|
|
import 'package:meshcore_open/connector/meshcore_protocol.dart';
|
|
import 'package:meshcore_open/models/contact.dart';
|
|
|
|
/// Builds a minimal RESP_CODE_CONTACT frame with a caller-chosen path-len byte.
|
|
Uint8List _frame({required int pathLen, List<int> pathBytes = const []}) {
|
|
final frame = Uint8List(contactFrameSize);
|
|
frame[0] = respCodeContact;
|
|
for (var i = contactPubKeyOffset; i < contactPubKeyOffset + pubKeySize; i++) {
|
|
frame[i] = 0x11; // non-zero public key passes the zeroed-key guard
|
|
}
|
|
frame[contactTypeOffset] = advTypeRepeater;
|
|
frame[contactFlagsOffset] = 0;
|
|
frame[contactPathLenOffset] = pathLen;
|
|
for (var i = 0; i < pathBytes.length && i < maxPathSize; i++) {
|
|
frame[contactPathOffset + i] = pathBytes[i];
|
|
}
|
|
const name = 'TestNode';
|
|
for (var i = 0; i < name.length; i++) {
|
|
frame[contactNameOffset + i] = name.codeUnitAt(i);
|
|
}
|
|
return frame;
|
|
}
|
|
|
|
void main() {
|
|
group('Contact.fromFrame path-len decode (#222)', () {
|
|
test('direct at 2-byte mode (0x40) -> 0 hops, empty path', () {
|
|
final c = Contact.fromFrame(_frame(pathLen: 0x40))!;
|
|
expect(c.pathLength, 0); // was 64 pre-#222
|
|
expect(c.path, isEmpty); // was 64 junk bytes pre-#222
|
|
});
|
|
|
|
test('plain direct (0x00) -> 0 hops, empty path', () {
|
|
final c = Contact.fromFrame(_frame(pathLen: 0x00))!;
|
|
expect(c.pathLength, 0);
|
|
expect(c.path, isEmpty);
|
|
});
|
|
|
|
test('1-byte-mode 3-byte path keeps its length and bytes', () {
|
|
final c = Contact.fromFrame(
|
|
_frame(pathLen: 0x03, pathBytes: [0xAA, 0xBB, 0xCC]),
|
|
)!;
|
|
expect(c.pathLength, 3);
|
|
expect(c.path, [0xAA, 0xBB, 0xCC]);
|
|
});
|
|
|
|
test('2-byte-mode multi-hop (0x44) decodes to 4 bytes, not flood', () {
|
|
// High bits = mode-1 hint, low bits = 4 bytes = a 2-hop path at 2-byte
|
|
// width. Pre-#222 the raw 68 (> maxPathSize) was mis-flagged as flood.
|
|
final c = Contact.fromFrame(
|
|
_frame(pathLen: 0x44, pathBytes: [1, 2, 3, 4]),
|
|
)!;
|
|
expect(c.pathLength, 4);
|
|
expect(c.path, [1, 2, 3, 4]);
|
|
expect(
|
|
realHopCount(c.pathLength, 2),
|
|
2,
|
|
); // 4 bytes / 2-byte width = 2 hops
|
|
});
|
|
|
|
test('flood sentinel (0xFF) stays -1, empty path', () {
|
|
final c = Contact.fromFrame(_frame(pathLen: 0xFF))!;
|
|
expect(c.pathLength, -1);
|
|
expect(c.path, isEmpty);
|
|
});
|
|
});
|
|
}
|