Trait JsonMatcher

Source

pub trait JsonMatcher: Debug {
    // Required methods
    fn matches(&self, value: &Value) -> bool;
    fn description(&self) -> String;
}

Expand description

Core trait for implementing JSON value matchers.

This trait allows creation of custom matchers for flexible value validation. Implementors must provide both matching logic and a description of the matcher.

§Examples

use json_test::JsonMatcher;
use serde_json::Value;

#[derive(Debug)]
struct DateMatcher;

impl JsonMatcher for DateMatcher {
    fn matches(&self, value: &Value) -> bool {
        value.as_str()
            .map(|s| s.contains("-"))
            .unwrap_or(false)
    }

    fn description(&self) -> String {
        "is a date string".to_string()
    }
}