solverforge 0.12.0

SolverForge - A constraint solver in Rust
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

// Integration test for constraint stream accessors generated by #[planning_solution]
// and convenience methods (penalize_hard, penalize_soft, etc.) on the Score trait.

use solverforge::prelude::*;
use solverforge::stream::{CollectionExtract, ConstraintFactory};
use solverforge::IncrementalConstraint;

#[path = "constraint_accessors/domain/mod.rs"]
mod domain;

use domain::Schedule;

#[test]
fn test_one_hard_returns_correct_score() {
    let hard = HardSoftScore::one_hard();
    assert_eq!(hard, HardSoftScore::of(1, 0));
}

#[test]
fn test_one_soft_returns_correct_score() {
    let soft = HardSoftScore::one_soft();
    assert_eq!(soft, HardSoftScore::of(0, 1));
}

#[test]
fn test_soft_score_one_soft() {
    let soft = SoftScore::one_soft();
    assert_eq!(soft, SoftScore::of(1));
}

#[test]
fn test_constraint_stream_accessors_compile() {
    let factory = ConstraintFactory::<Schedule, HardSoftScore>::new();
    let _shifts_stream = factory.for_each(Schedule::shifts());
    let factory3 = ConstraintFactory::<Schedule, HardSoftScore>::new();
    let _unassigned_stream = factory3.for_each(Schedule::shifts()).unassigned();

    let factory2 = ConstraintFactory::<Schedule, HardSoftScore>::new();
    let _employees_stream = factory2.for_each(Schedule::employees());
}

#[test]
fn generated_descriptor_stream_localizes_callbacks() {
    let mut constraint = ConstraintFactory::<Schedule, HardSoftScore>::new()
        .for_each(Schedule::shifts())
        .penalize_hard()
        .named("shift count");

    let schedule = Schedule {
        employees: vec![domain::Employee {
            id: 1,
            name: "Ada".to_string(),
        }],
        shifts: vec![
            domain::Shift {
                id: 1,
                employee: Some(1),
            },
            domain::Shift {
                id: 2,
                employee: None,
            },
        ],
        score: None,
    };

    assert_eq!(constraint.initialize(&schedule), HardSoftScore::of(-2, 0));
    assert_eq!(constraint.on_insert(&schedule, 0, 1), HardSoftScore::zero());
    assert_eq!(
        constraint.on_retract(&schedule, 0, 0),
        HardSoftScore::of(1, 0)
    );
}

#[test]
fn generated_model_sources_carry_descriptor_metadata() {
    let extractor = Schedule::shifts();
    assert!(extractor.change_source().owns_descriptor(0));

    let mut constraint = ConstraintFactory::<Schedule, HardSoftScore>::new()
        .for_each(extractor)
        .penalize_hard()
        .named("source aware shifts");

    let schedule = Schedule {
        employees: vec![domain::Employee {
            id: 1,
            name: "Ada".to_string(),
        }],
        shifts: vec![domain::Shift {
            id: 1,
            employee: Some(1),
        }],
        score: None,
    };

    assert_eq!(constraint.initialize(&schedule), HardSoftScore::of(-1, 0));
    assert_eq!(
        constraint.on_retract(&schedule, 0, 0),
        HardSoftScore::of(1, 0)
    );
}

#[test]
fn test_penalize_hard_compiles_on_stream() {
    let factory = ConstraintFactory::<Schedule, HardSoftScore>::new();
    let constraint = factory
        .for_each(Schedule::shifts())
        .penalize_hard()
        .named("Test penalize hard");

    let _ = constraint;
}

#[test]
fn test_penalize_soft_compiles_on_stream() {
    let factory = ConstraintFactory::<Schedule, HardSoftScore>::new();
    let constraint = factory
        .for_each(Schedule::shifts())
        .penalize_soft()
        .named("Test penalize soft");

    let _ = constraint;
}

#[test]
fn test_named_alias_compiles() {
    let factory = ConstraintFactory::<Schedule, HardSoftScore>::new();
    let constraint = factory
        .for_each(Schedule::shifts())
        .penalize_hard()
        .named("Test named alias");

    let _ = constraint;
}