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gps-denied-onboard/tests/test_metric.py
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"""Tests for Metric Refinement (F09)."""
import numpy as np
import pytest
from gps_denied.core.metric import MetricRefinement
from gps_denied.core.models import ModelManager
from gps_denied.schemas.flight import GPSPoint
from gps_denied.schemas.metric import AlignmentResult, ChunkAlignmentResult
from gps_denied.schemas.satellite import TileBounds
@pytest.fixture
def metric():
manager = ModelManager()
return MetricRefinement(manager)
@pytest.fixture
def bounds():
# Covers precisely 1 degree lat and lon around 49, 32
return TileBounds(
nw=GPSPoint(lat=50.0, lon=32.0),
ne=GPSPoint(lat=50.0, lon=33.0),
sw=GPSPoint(lat=49.0, lon=32.0),
se=GPSPoint(lat=49.0, lon=33.0),
center=GPSPoint(lat=49.5, lon=32.5),
gsd=1.0 # dummy
)
def test_extract_gps_from_alignment(metric, bounds):
# Homography is identity -> map center to center
H = np.eye(3, dtype=np.float64)
# The image is 256x256 in our mock
# Center pixel is 128, 128
gps = metric.extract_gps_from_alignment(H, bounds, (128, 128))
# 128 is middle -> should be EXACTLY at 49.5 lat and 32.5 lon
assert np.isclose(gps.lat, 49.5)
assert np.isclose(gps.lon, 32.5)
def test_align_to_satellite(metric, bounds, monkeypatch):
# Monkeypatch random to ensure matched=True and high inliers
def mock_infer(*args, **kwargs):
H = np.eye(3, dtype=np.float64)
return {"homography": H, "inlier_count": 80, "confidence": 0.8}
engine = metric.model_manager.get_inference_engine("LiteSAM")
monkeypatch.setattr(engine, "infer", mock_infer)
uav = np.zeros((256, 256, 3))
sat = np.zeros((256, 256, 3))
res = metric.align_to_satellite(uav, sat, bounds)
assert res is not None
assert isinstance(res, AlignmentResult)
assert res.matched is True
assert res.inlier_count == 80
def test_align_chunk_to_satellite(metric, bounds, monkeypatch):
def mock_infer(*args, **kwargs):
H = np.eye(3, dtype=np.float64)
return {"homography": H, "inlier_count": 80, "confidence": 0.8}
engine = metric.model_manager.get_inference_engine("LiteSAM")
monkeypatch.setattr(engine, "infer", mock_infer)
uavs = [np.zeros((256, 256, 3)) for _ in range(5)]
sat = np.zeros((256, 256, 3))
res = metric.align_chunk_to_satellite(uavs, sat, bounds)
assert res is not None
assert isinstance(res, ChunkAlignmentResult)
assert res.matched is True
assert res.chunk_id == "chunk1"