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

use crate::core::constraint::Constraint;
use crate::core::value::FieldValue;
use anyhow::{anyhow, Result};

#[derive(Debug)]
pub struct Minimum<T: Copy> {
    pub min_val: T,
}

impl Constraint for Minimum<i64> {
    fn validate(&self, val: &FieldValue) -> Result<()> {
        match val {
            FieldValue::Integer(v) if (*v < self.min_val) => Err(anyhow!(format!(
                "value {} is less then {} ({})",
                v, self.min_val, "Minimum"
            ))),
            _ => Ok(()),
        }
    }
}

impl Constraint for Minimum<u64> {
    fn validate(&self, val: &FieldValue) -> Result<()> {
        match val {
            FieldValue::UInteger(v) if (*v < self.min_val) => Err(anyhow!(format!(
                "value {} is less then {} ({})",
                v, self.min_val, "Minimum"
            ))),
            _ => Ok(()),
        }
    }
}

impl Constraint for Minimum<f64> {
    fn validate(&self, val: &FieldValue) -> Result<()> {
        match val {
            FieldValue::Float(v) if (*v < self.min_val) => Err(anyhow!(format!(
                "value {} is less then {} ({})",
                v, self.min_val, "Minimum"
            ))),
            _ => Ok(()),
        }
    }
}

#[cfg(test)]
mod tests {
    use crate::core::constraint::number::minimum::Minimum;
    use crate::core::constraint::Constraint;
    use crate::core::value::FieldValue;

    #[test]
    fn test_minimum_i64() {
        let constraint = Minimum { min_val: 10i64 };

        let value = FieldValue::Integer(11);
        assert!(constraint.validate(&value).is_ok());

        let value = FieldValue::Integer(10);
        assert!(constraint.validate(&value).is_ok());

        let value = FieldValue::Integer(3);
        assert!(constraint.validate(&value).is_err());
    }

    #[test]
    fn test_minimum_u64() {
        let constraint = Minimum { min_val: 10u64 };

        let value = FieldValue::UInteger(11u64);
        assert!(constraint.validate(&value).is_ok());

        let value = FieldValue::UInteger(10u64);
        assert!(constraint.validate(&value).is_ok());

        let value = FieldValue::UInteger(3u64);
        assert!(constraint.validate(&value).is_err());
    }

    #[test]
    fn test_minimum_f64() {
        let constraint = Minimum { min_val: 10.0 };

        let value = FieldValue::Float(11.0);
        assert!(constraint.validate(&value).is_ok());

        let value = FieldValue::Float(10.0);
        assert!(constraint.validate(&value).is_ok());

        let value = FieldValue::Float(3.0);
        assert!(constraint.validate(&value).is_err());
    }
}