Initial commit — DRB client (edge node) stack

Includes edge-node (FastAPI/MQTT/Discord voice), op25-container (SDR decoder),
and icecast (audio streaming).

drb-edge-node/tests/test_config_manager.py

@@ -0,0 +1,131 @@
+"""
+Unit tests for config_manager — pure file I/O, no external services.
+"""
+import json
+import pytest
+from pathlib import Path
+from unittest.mock import patch
+from app.models import NodeConfig, SystemConfig
+
+
+# ---------------------------------------------------------------------------
+# save / load round-trip
+# ---------------------------------------------------------------------------
+
+def test_save_and_load_roundtrip(tmp_path):
+    config = NodeConfig(
+        node_id="test-node-01",
+        node_name="Test Node",
+        lat=40.7128,
+        lon=-74.0060,
+        configured=True,
+        assigned_system_id="sys-001",
+    )
+
+    config_file = tmp_path / "node_config.json"
+    with patch("app.internal.config_manager._CONFIG_FILE", config_file):
+        import app.internal.config_manager as cm
+        cm.save_node_config(config)
+        loaded = cm.load_node_config()
+
+    assert loaded.node_id == config.node_id
+    assert loaded.node_name == config.node_name
+    assert loaded.lat == pytest.approx(config.lat)
+    assert loaded.lon == pytest.approx(config.lon)
+    assert loaded.configured is True
+    assert loaded.assigned_system_id == "sys-001"
+
+
+def test_save_writes_valid_json(tmp_path):
+    config = NodeConfig(
+        node_id="node-x",
+        node_name="X",
+        lat=1.0,
+        lon=2.0,
+    )
+    config_file = tmp_path / "node_config.json"
+    with patch("app.internal.config_manager._CONFIG_FILE", config_file):
+        import app.internal.config_manager as cm
+        cm.save_node_config(config)
+
+    data = json.loads(config_file.read_text())
+    assert data["node_id"] == "node-x"
+    assert data["configured"] is False
+
+
+# ---------------------------------------------------------------------------
+# load fallback behaviour
+# ---------------------------------------------------------------------------
+
+def test_load_missing_file_returns_defaults(tmp_path):
+    config_file = tmp_path / "nonexistent.json"
+    with patch("app.internal.config_manager._CONFIG_FILE", config_file):
+        import app.internal.config_manager as cm
+        result = cm.load_node_config()
+
+    assert result.configured is False
+
+
+def test_load_invalid_json_returns_defaults(tmp_path):
+    config_file = tmp_path / "node_config.json"
+    config_file.write_text("not valid json {{{")
+
+    with patch("app.internal.config_manager._CONFIG_FILE", config_file):
+        import app.internal.config_manager as cm
+        result = cm.load_node_config()
+
+    assert result.configured is False
+
+
+def test_load_partial_json_returns_defaults(tmp_path):
+    """A truncated file (e.g. mid-write crash) should fall back to defaults."""
+    config_file = tmp_path / "node_config.json"
+    config_file.write_text('{"node_id": "x"')  # truncated
+
+    with patch("app.internal.config_manager._CONFIG_FILE", config_file):
+        import app.internal.config_manager as cm
+        result = cm.load_node_config()
+
+    assert result.configured is False
+
+
+# ---------------------------------------------------------------------------
+# apply_system_config
+# ---------------------------------------------------------------------------
+
+def test_apply_system_config_writes_json(tmp_path):
+    system = SystemConfig(
+        system_id="sys-001",
+        name="Test System",
+        type="P25",
+        config={"freq": 851.0125, "nac": 0x293},
+    )
+
+    with patch("app.internal.config_manager.settings") as mock_settings:
+        mock_settings.config_path = str(tmp_path)
+        import app.internal.config_manager as cm
+        result = cm.apply_system_config(system)
+
+    assert result is True
+    written = json.loads((tmp_path / "active.cfg.json").read_text())
+    assert written["freq"] == pytest.approx(851.0125)
+    assert written["nac"] == 0x293
+
+
+def test_apply_system_config_returns_false_on_error(tmp_path):
+    system = SystemConfig(
+        system_id="sys-001",
+        name="Test",
+        type="DMR",
+        config={},
+    )
+
+    with patch("app.internal.config_manager.settings") as mock_settings:
+        # Point at a path that can't be written (a file, not a dir)
+        blocker = tmp_path / "blocker"
+        blocker.touch()
+        mock_settings.config_path = str(blocker)
+        import app.internal.config_manager as cm
+        result = cm.apply_system_config(system)
+
+    assert result is False