karbon_framework/validation/constraints/comparison/
equal_to.rs

1use crate::validation::constraints::{Constraint, ConstraintResult, ConstraintViolation};
2
3/// Validates that a value is equal to a given value.
4///
5/// Equivalent to Symfony's `EqualTo` constraint.
6pub struct EqualTo {
7    pub value: String,
8    pub message: String,
9}
10
11impl EqualTo {
12    pub fn new(value: impl Into<String>) -> Self {
13        Self {
14            value: value.into(),
15            message: "This value should be equal to {{ compared_value }}.".to_string(),
16        }
17    }
18
19    pub fn with_message(mut self, message: impl Into<String>) -> Self {
20        self.message = message.into();
21        self
22    }
23}
24
25impl Constraint for EqualTo {
26    fn validate(&self, value: &str) -> ConstraintResult {
27        if value != self.value {
28            return Err(ConstraintViolation::new(
29                self.name(),
30                self.message.replace("{{ compared_value }}", &self.value),
31                value,
32            ));
33        }
34        Ok(())
35    }
36
37    fn name(&self) -> &'static str {
38        "EqualTo"
39    }
40}
41
42#[cfg(test)]
43mod tests {
44    use super::*;
45
46    #[test]
47    fn test_equal_values() {
48        let constraint = EqualTo::new("hello");
49        assert!(constraint.validate("hello").is_ok());
50    }
51
52    #[test]
53    fn test_not_equal_values() {
54        let constraint = EqualTo::new("hello");
55        assert!(constraint.validate("world").is_err());
56        assert!(constraint.validate("Hello").is_err()); // case sensitive
57        assert!(constraint.validate("").is_err());
58    }
59
60    #[test]
61    fn test_error_message() {
62        let constraint = EqualTo::new("expected");
63        let err = constraint.validate("actual").unwrap_err();
64        assert!(err.message.contains("expected"));
65    }
66}
karbon_framework/validation/constraints/comparison/equal_to.rs

karbon_framework/validation/constraints/comparison/
equal_to.rs
