solverforge-config 0.8.7

Configuration system for SolverForge constraint solver
Documentation 
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
152
153
154
155
156
157
158
159
160
161
162
163
164

// Tests for solver configuration.

use super::*;

#[test]
fn test_toml_parsing() {
    let toml = r#"
        environment_mode = "reproducible"
        random_seed = 42

        [termination]
        seconds_spent_limit = 30

        [[phases]]
        type = "construction_heuristic"
        construction_heuristic_type = "first_fit_decreasing"

        [[phases]]
        type = "local_search"
        [phases.acceptor]
        type = "late_acceptance"
        late_acceptance_size = 400
    "#;

    let config = SolverConfig::from_toml_str(toml).unwrap();
    assert_eq!(config.environment_mode, EnvironmentMode::Reproducible);
    assert_eq!(config.random_seed, Some(42));
    assert_eq!(config.termination.unwrap().seconds_spent_limit, Some(30));
    assert_eq!(config.phases.len(), 2);
}

#[test]
fn test_yaml_parsing() {
    let yaml = r#"
        environment_mode: reproducible
        random_seed: 42
        termination:
          seconds_spent_limit: 30
        phases:
          - type: construction_heuristic
            construction_heuristic_type: first_fit_decreasing
          - type: local_search
            acceptor:
              type: late_acceptance
              late_acceptance_size: 400
    "#;

    let config = SolverConfig::from_yaml_str(yaml).unwrap();
    assert_eq!(config.environment_mode, EnvironmentMode::Reproducible);
    assert_eq!(config.random_seed, Some(42));
}

#[test]
fn test_builder() {
    let config = SolverConfig::new()
        .with_random_seed(123)
        .with_termination_seconds(60)
        .with_phase(PhaseConfig::ConstructionHeuristic(
            ConstructionHeuristicConfig::default(),
        ))
        .with_phase(PhaseConfig::LocalSearch(LocalSearchConfig::default()));

    assert_eq!(config.random_seed, Some(123));
    assert_eq!(config.phases.len(), 2);
}

#[test]
fn test_unified_target_and_vnd_parsing() {
    let toml = r#"
        [[phases]]
        type = "construction_heuristic"
        construction_heuristic_type = "first_fit"
        entity_class = "Shift"
        variable_name = "employee_id"

        [[phases]]
        type = "vnd"

        [[phases.neighborhoods]]
        type = "change_move_selector"
        entity_class = "Shift"
        variable_name = "employee_id"

        [[phases.neighborhoods]]
        type = "list_change_move_selector"
        entity_class = "Vehicle"
        variable_name = "visits"
    "#;

    let config = SolverConfig::from_toml_str(toml).unwrap();
    assert_eq!(config.phases.len(), 2);

    let PhaseConfig::ConstructionHeuristic(construction) = &config.phases[0] else {
        panic!("first phase should be construction");
    };
    assert_eq!(construction.target.entity_class.as_deref(), Some("Shift"));
    assert_eq!(
        construction.target.variable_name.as_deref(),
        Some("employee_id")
    );

    let PhaseConfig::Vnd(vnd) = &config.phases[1] else {
        panic!("second phase should be vnd");
    };
    assert_eq!(vnd.neighborhoods.len(), 2);

    let MoveSelectorConfig::ChangeMoveSelector(change) = &vnd.neighborhoods[0] else {
        panic!("first neighborhood should be change selector");
    };
    assert_eq!(change.target.entity_class.as_deref(), Some("Shift"));
    assert_eq!(change.target.variable_name.as_deref(), Some("employee_id"));

    let MoveSelectorConfig::ListChangeMoveSelector(list_change) = &vnd.neighborhoods[1] else {
        panic!("second neighborhood should be list change selector");
    };
    assert_eq!(list_change.target.entity_class.as_deref(), Some("Vehicle"));
    assert_eq!(list_change.target.variable_name.as_deref(), Some("visits"));
}

#[test]
fn test_selected_count_limit_move_selector_parsing() {
    let toml = r#"
        [[phases]]
        type = "local_search"

        [phases.move_selector]
        type = "union_move_selector"

        [[phases.move_selector.selectors]]
        type = "selected_count_limit_move_selector"
        selected_count_limit = 500

        [phases.move_selector.selectors.selector]
        type = "sub_list_change_move_selector"
        min_sublist_size = 1
        max_sublist_size = 3
        entity_class = "Route"
        variable_name = "visits"
    "#;

    let config = SolverConfig::from_toml_str(toml).unwrap();
    assert_eq!(config.phases.len(), 1);

    let PhaseConfig::LocalSearch(local_search) = &config.phases[0] else {
        panic!("phase should be local_search");
    };
    let Some(MoveSelectorConfig::UnionMoveSelector(union)) = &local_search.move_selector else {
        panic!("local search should have a union move selector");
    };
    assert_eq!(union.selectors.len(), 1);

    let MoveSelectorConfig::SelectedCountLimitMoveSelector(limit) = &union.selectors[0] else {
        panic!("union child should be a selected count limit selector");
    };
    assert_eq!(limit.selected_count_limit, 500);

    let MoveSelectorConfig::SubListChangeMoveSelector(sublist) = limit.selector.as_ref() else {
        panic!("selected count limit child should be sub_list_change");
    };
    assert_eq!(sublist.min_sublist_size, 1);
    assert_eq!(sublist.max_sublist_size, 3);
    assert_eq!(sublist.target.entity_class.as_deref(), Some("Route"));
    assert_eq!(sublist.target.variable_name.as_deref(), Some("visits"));
}