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docs/evidence/native-2026-10-01-maintenance-refuel/test_native_maintenance_refuel.py.txt

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+"""Execute native refuel fixture policy/callback bodies; no engine qualification."""
+from pathlib import Path
+import os
+from policy_harness import ROOT, body, run
+P=Path(os.environ.get('ERR_NATIVE_MAINTENANCE_SOURCE', ROOT/'addons/core/Scripts/Game/ERR/40_Chat/ERR_NativeMaintenanceProbe.c'))
+within=body(P,'static bool WithinDeadline(')
+fuel=body(P,'static bool FuelConserved(').replace('Math.AbsFloat','std::fabs')
+finish=body(P,'protected void Finish(').replace('protected ','')
+run(r'''
+#include <cassert>
+#include <cmath>
+#include <limits>
+'''+within+fuel+r'''
+struct Callback {int Result=0;
+'''+finish+r'''
+};
+int main(){
+ assert(WithinDeadline(100,100)&&WithinDeadline(100,120100));
+ assert(!WithinDeadline(100,99)&&!WithinDeadline(100,120101)&&!WithinDeadline(-1,0));
+ float nan=std::numeric_limits<float>::quiet_NaN();
+ assert(!WithinDeadline(nan,100)&&!WithinDeadline(0,nan));
+ assert(FuelConserved(5,5,20,20,40));
+ assert(FuelConserved(5,4.5,20,20.5,40));
+ assert(FuelConserved(5,0,20,25,40));
+ assert(!FuelConserved(5,4.5,20,21,40)); // free gain
+ assert(!FuelConserved(5,4,20,20.5,40)); // unaccounted loss
+ assert(!FuelConserved(5,6,20,19,40)); // refill/reverse transfer
+ assert(!FuelConserved(5,-1,20,26,40));
+ assert(!FuelConserved(5,0,20,25,24));
+ assert(!FuelConserved(0,0,20,20,40));
+ assert(!FuelConserved(6,0,20,26,40));
+ for(int field=0;field<5;field++){
+  float v[]={5,4,20,21,40};v[field]=nan;
+  assert(!FuelConserved(v[0],v[1],v[2],v[3],v[4]));
+ }
+ Callback a;a.Finish(1);a.Finish(-1);a.Finish(1);assert(a.Result==1);
+ Callback b;b.Finish(-1);b.Finish(1);assert(b.Result==-1);
+}
+''')
+s=P.read_text();select=body(P,'protected bool Select(');tick=body(P,'int Tick(')
+for mutation in ('SetFuel(', 'TryMove', 'Spawn(', 'SetGadgetMode(', 'PerformAction('):
+ assert mutation not in select,mutation
+assert s.count('TryMoveItemToStorage(')==1 and s.count('m_Tank.SetFuel(')==1
+assert 'm_CanFuel.Set' not in s and 'TrySpawn' not in s
+assert 'm_State = 1;' in tick[:tick.index('TryMoveItemToStorage(')]
+assert 'm_Move.Result == 1' in tick and 'GetParentSlot().GetStorage() == m_Destination' in tick
+assert 'Check(m_Interrupted,' in tick and 'm_Calls <= 128' in tick
+assert 'if (m_Mode && m_Mode == ERR_GameMode.Get()' in body(P,'protected void CancelAction(')
+assert 'errMaintenanceRefuel' in body(P,'static bool Enabled(') and 'normal-escape-route' in body(P,'static bool Enabled(')
+print('PASS: actual finite conservation/deadline/callback policies; read-only selection, bounded once-only inventory submission and no can refill; native transfer not executed')