Files
meshcore-bot/tests
agessaman ebc66992dd feat(neighbors): zero-hop neighbour discovery in packet capture
Port the observer firmware's neighbours feature into the bot's packet capture
service, by way of meshcore-packet-capture (upstream PRs #42/#43). On a long
interval the bot asks which repeaters it hears directly and records each
confirmed link with its measured SNR.

This is the strongest link evidence the bot collects: a first-party RF
measurement between two full 32-byte public keys. Path inference works from
1-3 byte prefixes with no keys, and complete_contact_tracking.hop_count
over-claims zero-hop (800 claimed vs 68 corroborated on the live database).

modules/neighbors_discovery.py keeps upstream's public names so its fixes and
tests stay portable. Two deliberate divergences:

- No command_lock plumbing. _SerializedCommands in modules/core.py already
  serialises and paces every radio command, strictly more than upstream's
  reentrant lock did.
- neighbors_collect_scopes defaults off. Upstream's zero-hop scope probe
  relies on a neighbour not being a known contact; this bot tracks contacts,
  and for a repeater with no stored path the library reaches zero-hop by
  calling change_contact_path() then reset_path() -- mutating the device's
  contact table per neighbour. Scope requests also hold the radio lock for
  their whole round trip (~25s), stalling bot replies. The default cycle is
  one command plus a passive listen window, during which the bot stays
  responsive.

Evidence lands in neighbor_links and neighbor_observations (migration 22)
rather than mesh_connections, which cannot persist provenance. The viewer
exposes it as evidence=neighbors on /api/mesh/edges and a Neighbours Only
mode on the mesh page, with populated public keys and real SNR; confirmed
neighbours also relabel edges in the combined view and count as
provenance-trusted when framing the initial map.

neighbors_enabled is the single switch. Every enabled broker publishes once
it is on (mqttN_neighbors defaults true; set false to hold one back). The
topic derives from each broker's packets topic with the last segment swapped,
so a templated broker gets meshcore/{IATA}/{PUBLIC_KEY}/neighbors -- the
topic the firmware uses -- instead of an unrelated flat one. A derived
location-routed topic is skipped with a warning when no iata is set, rather
than publishing into meshcore/XYZ/... on a shared namespace. Snapshots are
non-retained: heard_secs_ago is relative to publish time, so a retained copy
would read as current days later.

Also adds a DM-gated `neighbors` command (the 12h interval floor makes
waiting for the scheduler impractical), which acks immediately and reports in
a second message once the window closes.

Requires meshcore >= 2.3.8 for send_node_discover_req / req_regions_sync.
2026-08-04 19:24:18 -07:00
..

MeshCore Bot Test Suite

This directory contains the test suite for the MeshCore Bot, focusing on graph-based path guessing functionality.

Structure

tests/
├── README.md              # This file
├── conftest.py            # Pytest fixtures and configuration
├── helpers.py             # Test data factories and helper functions
├── unit/                  # Unit tests (isolated, with mocks)
│   ├── test_mesh_graph_edges.py
│   ├── test_mesh_graph_validation.py
│   ├── test_mesh_graph_scoring.py
│   ├── test_mesh_graph_multihop.py
│   └── test_path_command_graph_selection.py
└── integration/          # Integration tests (with real database)
    └── test_path_resolution.py

Running Tests

Run all tests

pytest

Run only unit tests

pytest tests/unit/

Run only integration tests

pytest tests/integration/

Run specific test file

pytest tests/unit/test_mesh_graph_edges.py

Run specific test

pytest tests/unit/test_mesh_graph_edges.py::TestMeshGraphEdges::test_add_new_edge

Run with coverage

pytest --cov=modules --cov-report=html --cov-report=term-missing

Run with verbose output

pytest -v

Run with markers

pytest -m unit          # Run only unit tests
pytest -m integration  # Run only integration tests
pytest -m slow          # Run slow tests

Test Coverage

Unit Tests

test_mesh_graph_edges.py (15 tests)

Tests for MeshGraph edge management:

  • Adding new edges
  • Updating existing edges
  • Public key handling
  • Hop position tracking
  • Geographic distance
  • Edge queries (get, has, outgoing, incoming)
  • Prefix normalization

test_mesh_graph_validation.py (12 tests)

Tests for path validation:

  • Path segment validation
  • Confidence calculation
  • Recency checks
  • Bidirectional edge validation
  • Full path validation
  • Minimum observations filtering

test_mesh_graph_scoring.py (11 tests)

Tests for candidate scoring:

  • Score calculation with various edge combinations
  • Bidirectional bonuses
  • Hop position matching
  • Geographic distance bonuses
  • Minimum observations filtering

test_mesh_graph_multihop.py (12 tests)

Tests for multi-hop path inference:

  • 2-hop and 3-hop path finding
  • Intermediate node discovery
  • Minimum observations filtering
  • Bidirectional path bonuses
  • Score reduction for longer paths

test_path_command_graph_selection.py (8 tests)

Tests for PathCommand._select_repeater_by_graph:

  • Direct edge selection
  • Stored public key bonus
  • Star bias multiplier
  • Multi-hop inference
  • Confidence conversion

Integration Tests

test_path_resolution.py (5 tests)

End-to-end tests for full path resolution:

  • Path resolution with graph edges from database
  • Prefix collision resolution using graph data
  • Edge persistence across graph restarts
  • Graph vs geographic selection
  • Real-world multi-hop scenarios

Test Fixtures

Fixtures are defined in conftest.py:

  • mock_logger: Mock logger for testing
  • test_config: Test configuration with Path_Command settings
  • test_db: In-memory SQLite database for testing
  • mock_bot: Mock bot instance with all necessary attributes
  • mesh_graph: Clean MeshGraph instance for testing
  • populated_mesh_graph: MeshGraph instance with sample edges

Test Helpers

Helper functions in helpers.py:

  • create_test_repeater(): Factory for creating test repeater data
  • create_test_edge(): Factory for creating test edge data
  • create_test_path(): Factory for creating test path data
  • populate_test_graph(): Helper to populate a graph with test edges

Writing New Tests

Unit Test Example

import pytest
from tests.helpers import create_test_edge

@pytest.mark.unit
class TestMyFeature:
    def test_my_feature(self, mesh_graph):
        """Test description."""
        mesh_graph.add_edge('01', '7e')
        assert mesh_graph.has_edge('01', '7e')

Integration Test Example

import pytest

@pytest.mark.integration
class TestMyIntegration:
    def test_my_integration(self, mock_bot, test_db):
        """Test description."""
        # Use real database and bot components
        pass

Test Markers

Tests are marked with:

  • @pytest.mark.unit: Unit tests (isolated, with mocks)
  • @pytest.mark.integration: Integration tests (with real database)
  • @pytest.mark.slow: Slow-running tests

Dependencies

Test dependencies are in requirements.txt:

  • pytest>=7.0.0
  • pytest-asyncio>=0.21.0
  • pytest-mock>=3.10.0
  • pytest-cov>=4.0.0

Configuration

Pytest configuration is in pytest.ini:

  • Test discovery patterns
  • Async test support
  • Output options
  • Test markers

Notes

  • Unit tests use in-memory SQLite databases for speed
  • Integration tests may use real database connections
  • All tests should be deterministic and not depend on external services
  • Tests should clean up after themselves (fixtures handle this automatically)