mytec
defa3ad440
Major refactoring of RFCP backend: - Modular propagation models (8 models) - SharedMemoryManager for terrain data - ProcessPoolExecutor parallel processing - WebSocket progress streaming - Building filtering pipeline (351k → 15k) - 82 unit tests Performance: Standard preset 38s → 5s (7.6x speedup) Known issue: Detailed preset timeout (fix in 3.1.0)
61 lines
2.1 KiB
Python
61 lines
2.1 KiB
Python
"""
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Unit tests for knife-edge diffraction calculations.
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"""
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import sys
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import os
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
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from app.geometry.diffraction import knife_edge_loss
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def freq_to_wl(freq_mhz):
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return 300.0 / freq_mhz
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class TestKnifeEdgeLoss:
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def test_no_obstruction_low_loss(self):
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"""Negative h means clearance above LOS — loss should be small."""
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loss = knife_edge_loss(d1_m=500, d2_m=500, h_m=-10, wavelength_m=freq_to_wl(1800))
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assert loss >= 0
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assert loss < 3
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def test_grazing_obstruction(self):
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"""h=0 means exactly at LOS line — ~6 dB loss."""
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loss = knife_edge_loss(d1_m=500, d2_m=500, h_m=0, wavelength_m=freq_to_wl(1800))
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assert 5 < loss < 8
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def test_obstruction_increases_loss(self):
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wl = freq_to_wl(1800)
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loss_low = knife_edge_loss(d1_m=500, d2_m=500, h_m=1, wavelength_m=wl)
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loss_high = knife_edge_loss(d1_m=500, d2_m=500, h_m=10, wavelength_m=wl)
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assert loss_high > loss_low
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def test_higher_freq_more_loss(self):
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"""Higher frequency = shorter wavelength = more diffraction loss."""
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loss_low_f = knife_edge_loss(d1_m=500, d2_m=500, h_m=5, wavelength_m=freq_to_wl(450))
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loss_high_f = knife_edge_loss(d1_m=500, d2_m=500, h_m=5, wavelength_m=freq_to_wl(1800))
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assert loss_high_f > loss_low_f
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def test_zero_distance_safe(self):
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"""Should not crash on zero distances."""
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loss = knife_edge_loss(d1_m=0, d2_m=500, h_m=5, wavelength_m=freq_to_wl(900))
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assert loss >= 0
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def test_large_clearance(self):
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"""Very deep clearance (large negative h) should have near-zero loss."""
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loss = knife_edge_loss(d1_m=500, d2_m=500, h_m=-50, wavelength_m=freq_to_wl(900))
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assert loss < 1.0
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if __name__ == "__main__":
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instance = TestKnifeEdgeLoss()
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for method_name in [m for m in dir(instance) if m.startswith("test_")]:
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try:
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getattr(instance, method_name)()
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print(f" PASS {method_name}")
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except Exception as e:
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print(f" FAIL {method_name}: {e}")
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print("\nAll tests completed.")
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