一个具备科研可验证性的 LoRa 多跳算法评估基线。

sim/tests/test_algorithm_compare.py

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+"""
+Test: Algorithm Comparison
+
+Verify that gradient routing outperforms baseline algorithms.
+"""
+
+import pytest
+from sim.experiments.runner import run_single_experiment
+
+
+@pytest.fixture
+def seed():
+    return 42
+
+
+def test_gradient_outperforms_random(seed):
+    """Test that gradient routing has better or equal PDR than random."""
+    gradient = run_single_experiment(
+        routing="gradient",
+        node_count=12,
+        area_size=800,
+        sim_time=100,
+        seed=seed,
+    )
+
+    random = run_single_experiment(
+        routing="random",
+        node_count=12,
+        area_size=800,
+        sim_time=100,
+        seed=seed,
+    )
+
+    print(f"\nGradient PDR: {gradient['pdr']:.2f}%")
+    print(f"Random PDR: {random['pdr']:.2f}%")
+
+    # Gradient should be at least as good as random (with small tolerance)
+    assert gradient["pdr"] >= random["pdr"] - 5.0, (
+        f"Gradient ({gradient['pdr']}%) should outperform Random ({random['pdr']}%)"
+    )
+
+
+def test_all_algorithms_run(seed):
+    """Test that all routing algorithms can run without errors."""
+    for routing in ["gradient", "flooding", "random"]:
+        result = run_single_experiment(
+            routing=routing,
+            node_count=10,
+            area_size=600,
+            sim_time=100,
+            seed=seed,
+        )
+
+        assert result["pdr"] >= 0, f"{routing} should produce valid PDR"
+        assert result["max_hop"] >= 0, f"{routing} should produce valid max_hop"
+
+
+def test_flooding_produces_more_hops(seed):
+    """Test that flooding produces more hops due to broadcast nature."""
+    gradient = run_single_experiment(
+        routing="gradient",
+        node_count=12,
+        area_size=800,
+        sim_time=100,
+        seed=seed,
+    )
+
+    flooding = run_single_experiment(
+        routing="flooding",
+        node_count=12,
+        area_size=800,
+        sim_time=100,
+        seed=seed,
+    )
+
+    print(f"\nGradient max_hop: {gradient['max_hop']}")
+    print(f"Flooding max_hop: {flooding['max_hop']}")
+
+    # Flooding should have higher max hop due to multi-path forwarding
+    assert flooding["max_hop"] >= gradient["max_hop"], (
+        "Flooding should produce more hops than gradient routing"
+    )
+
+
+if __name__ == "__main__":
+    pytest.main([__file__, "-v", "-s"])