fusible 0.20.6

Electronic linter: a fuse that blows to block firmware code generation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151

//! End-to-end `route_circuit` tests.

use serde_json::Value;

use super::fixtures::{circuit, connect, crossing_nets, pad};
use crate::router::astar::{AStarConfig, RoutePath, RouteStepKind, Terminal};
use crate::router::engine::ripup::rip_up_and_reroute;
use crate::router::engine::{route_circuit, ConnectionJob, RouteOptions};
use crate::router::spatial::segment_distance;
use crate::router::spatial::SpatialRoutingIndex;

#[test]
fn engine_resolves_nets_through_pcb_port_and_source_trace() {
    let json = circuit(
        (40.0, 20.0),
        &[
            pad("g1", 0.0, 0.0, "top"),
            pad("g2", 10.0, 0.0, "top"),
            pad("v1", 0.0, 5.0, "top"),
            pad("v2", 10.0, 5.0, "top"),
            connect("gnd", "g1", "g2"),
            connect("vcc", "v1", "v2"),
        ],
    );

    let res = route_circuit(&json, &RouteOptions::default()).expect("routing should succeed");
    assert_eq!(res.total_nets, 2);
    assert_eq!(res.routed_nets, 2);
    assert!(res.unrouted_nets.is_empty());
    assert!(res.output_json.contains("pcb_trace_auto_2"));
}

#[test]
fn routed_nets_never_violate_clearance_to_each_other() {
    let options = RouteOptions {
        layers: 1,
        ..Default::default()
    };
    let res = route_circuit(&crossing_nets(), &options).expect("routing should run");
    assert_eq!(res.routed_nets, 2);
    let elements: Vec<Value> = serde_json::from_str(&res.output_json).unwrap();

    let mut segments = Vec::new();
    for el in elements.iter().filter(|e| e["type"] == "pcb_trace") {
        let net = el["net_id"].as_str().unwrap().to_string();
        let route = el["route"].as_array().unwrap();
        for pair in route.windows(2) {
            let p = |v: &Value| [v["x"].as_f64().unwrap(), v["y"].as_f64().unwrap()];
            segments.push((net.clone(), p(&pair[0]), p(&pair[1])));
        }
    }
    assert!(!segments.is_empty());
    for (na, a1, a2) in &segments {
        for (nb, b1, b2) in &segments {
            if na != nb {
                let gap = segment_distance(*a1, *a2, *b1, *b2);
                assert!(
                    gap >= options.trace_width + options.clearance - 1e-9,
                    "{na} and {nb} are {gap} mm apart"
                );
            }
        }
    }
}

#[test]
fn routing_is_deterministic() {
    let first = route_circuit(&crossing_nets(), &RouteOptions::default()).unwrap();
    let second = route_circuit(&crossing_nets(), &RouteOptions::default()).unwrap();
    assert_eq!(first.output_json, second.output_json);
}

#[test]
fn board_outline_blocks_routes_that_would_leave_the_board() {
    let json = circuit(
        (20.0, 2.0),
        &[
            pad("a1", -8.0, 0.0, "top"),
            pad("a2", 8.0, 0.0, "top"),
            connect("a", "a1", "a2"),
            r#"{ "type": "pcb_smtpad", "shape": "rect", "x": 0, "y": 0,
                 "width": 1, "height": 1.6, "layer": "top" }"#
                .to_string(),
        ],
    );
    let options = RouteOptions {
        layers: 1,
        max_iterations: 1,
        ..Default::default()
    };
    let res = route_circuit(&json, &options).unwrap();
    assert_eq!(res.routed_nets, 0);
}

#[test]
fn routing_without_a_board_fails_closed() {
    let json = format!(
        "[{}, {}, {}]",
        pad("a1", 0.0, 0.0, "top"),
        pad("a2", 5.0, 0.0, "top"),
        connect("a", "a1", "a2")
    );
    assert!(route_circuit(&json, &RouteOptions::default()).is_err());
}

#[test]
fn routed_output_feeds_the_strict_gerber_generator() {
    let res = route_circuit(&crossing_nets(), &RouteOptions::default()).unwrap();
    assert_eq!(res.routed_nets, 2);
    crate::gerber::generate_gerber_files(&res.output_json, "t").expect("routed JSON is fabricable");
}

fn job(net: &str, from: [f64; 2], to: [f64; 2]) -> ConnectionJob {
    let terminal = |point: [f64; 2]| Terminal {
        point,
        layers: vec!["top".to_string()],
    };
    ConnectionJob {
        net_id: net.to_string(),
        start: terminal(from),
        target: terminal(to),
    }
}

#[test]
fn rip_up_moves_a_blocking_route_to_free_a_blocked_one() {
    let config = AStarConfig {
        layers: vec!["top".to_string()],
        ..Default::default()
    };
    let jobs = [
        job("a", [-8.0, 0.0], [8.0, 0.0]),
        job("b", [0.0, -3.0], [0.0, 3.0]),
    ];
    let base = SpatialRoutingIndex::new();
    let wire = |x, y| RouteStepKind::Wire {
        layer: "top".to_string(),
        x,
        y,
    };
    let mut paths = vec![
        Some(RoutePath {
            steps: vec![wire(-8.0, 0.0), wire(8.0, 0.0)],
        }),
        None,
    ];

    rip_up_and_reroute(&jobs, &base, &config, &mut paths);

    assert!(paths.iter().all(Option::is_some));
}