Initial commit

test_h02_gsd_calculator.py

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+import pytest
+from h02_gsd_calculator import GSDCalculator
+from f02_1_flight_lifecycle_manager import CameraParameters
+
+@pytest.fixture
+def simple_camera():
+    return CameraParameters(
+        focal_length_mm=10.0,
+        sensor_width_mm=10.0,
+        resolution={"width": 1000, "height": 1000}
+    )
+
+@pytest.fixture
+def realistic_camera():
+    return CameraParameters(
+        focal_length_mm=25.0,
+        sensor_width_mm=23.5,
+        resolution={"width": 6252, "height": 4168}
+    )
+
+@pytest.fixture
+def gsd_calc():
+    return GSDCalculator()
+
+class TestGSDCalculator:
+
+    def test_calculate_gsd_simple(self, gsd_calc, simple_camera):
+        gsd = gsd_calc.compute_gsd(100.0, simple_camera)
+        assert gsd == pytest.approx(0.1)
+
+    def test_calculate_gsd_realistic(self, gsd_calc, realistic_camera):
+        gsd = gsd_calc.compute_gsd(400.0, realistic_camera)
+        assert gsd == pytest.approx(0.060, abs=0.001)
+
+    def test_meters_per_pixel(self, gsd_calc):
+        m_px = gsd_calc.meters_per_pixel(48.0, 19)
+        assert m_px > 0.0
+
+    def test_altitude_to_scale(self, gsd_calc):
+        scale = gsd_calc.altitude_to_scale(100.0, 25.0)
+        assert scale == 4.0