nx_water_quality_test.nx source
↩ module page · 60 lines · 2343 B
1// nx_water_quality_test.nx -- smoke for nx_water_quality. Proves TDS taste
2// bands + composite taste score, health mineral thresholds, and the never-
3// poison safety gate (lead/arsenic/nitrate/PFAS/bacteria/THM).
4// Exit code = failed assertion number; 0 = all pass.
5
6import "nx_syscalls.nx"
7import "nx_water_quality.nx"
8
9func main() -> i64 {
10 // --- TDS palatability bands (WHO) ---
11 if wq_tds_taste_class(250) != WQ_EXCELLENT { return 1 }
12 if wq_tds_taste_class(30) != WQ_INSIPID { return 2 }
13 if wq_tds_taste_class(1000) != WQ_POOR { return 3 }
14 if wq_tds_taste_class(1500) != WQ_UNACCEPTABLE { return 4 }
15
16 // --- composite taste score: an ideally-mineralized water scores 100 ---
17 let good: *NxWaterSample = nx_water_sample_new()
18 good.tds = 250
19 good.ca = 50
20 good.mg = 25
21 good.ph_x10 = 75
22 if wq_taste_score(good) != 100 { return 5 }
23
24 // --- near-distilled water tastes flat ---
25 let flat: *NxWaterSample = nx_water_sample_new()
26 flat.tds = 2
27 flat.ph_x10 = 60
28 if wq_taste_score(flat) != 15 { return 6 }
29
30 // --- health: needs the WHO desirable minerals ---
31 if wq_is_healthful(good) != 1 { return 7 }
32 let poor_min: *NxWaterSample = nx_water_sample_new()
33 poor_min.tds = 250
34 poor_min.ca = 5
35 poor_min.mg = 5
36 poor_min.ph_x10 = 75
37 if wq_is_potable(poor_min) != 1 { return 8 } // safe to drink
38 if wq_is_healthful(poor_min) != 0 { return 9 } // but not mineral-healthful
39
40 // --- NEVER-POISON safety gate ---
41 if wq_safety_admit(good) != WQ_SAFE { return 10 }
42 let lead: *NxWaterSample = nx_water_sample_new()
43 lead.tds = 250
44 lead.lead_ppb = 20
45 if wq_safety_admit(lead) != WQ_REFUSED_LEAD { return 11 } // > 15 ppb
46 let pfas: *NxWaterSample = nx_water_sample_new()
47 pfas.pfas_ppt = 5
48 if wq_safety_admit(pfas) != WQ_REFUSED_PFAS { return 12 } // > 4 ppt (EPA 2024)
49 let bug: *NxWaterSample = nx_water_sample_new()
50 bug.bacteria = 1
51 if wq_safety_admit(bug) != WQ_REFUSED_BACTERIA { return 13 }
52 let ars: *NxWaterSample = nx_water_sample_new()
53 ars.arsenic_ppb = 15
54 if wq_safety_admit(ars) != WQ_REFUSED_ARSENIC { return 14 }
55 let nit: *NxWaterSample = nx_water_sample_new()
56 nit.nitrate_mgl = 12
57 if wq_safety_admit(nit) != WQ_REFUSED_NITRATE { return 15 }
58
59 return 0
60}