json_test/matchers/
type_matcher.rs

1use super::JsonMatcher;
2use serde_json::Value;
3
4#[derive(Debug)]
5pub struct TypeMatcher {
6    expected_type: &'static str,
7}
8
9impl TypeMatcher {
10    pub fn new(expected_type: &'static str) -> Self {
11        Self { expected_type }
12    }
13
14    // Convenience constructors
15    pub fn string() -> Self {
16        Self::new("string")
17    }
18
19    pub fn number() -> Self {
20        Self::new("number")
21    }
22
23    pub fn boolean() -> Self {
24        Self::new("boolean")
25    }
26
27    pub fn array() -> Self {
28        Self::new("array")
29    }
30
31    pub fn object() -> Self {
32        Self::new("object")
33    }
34
35    pub fn null() -> Self {
36        Self::new("null")
37    }
38}
39
40impl JsonMatcher for TypeMatcher {
41    fn matches(&self, value: &Value) -> bool {
42        match (self.expected_type, value) {
43            ("string", Value::String(_)) => true,
44            ("number", Value::Number(_)) => true,
45            ("boolean", Value::Bool(_)) => true,
46            ("null", Value::Null) => true,
47            ("array", Value::Array(_)) => true,
48            ("object", Value::Object(_)) => true,
49            _ => false,
50        }
51    }
52
53    fn description(&self) -> String {
54        format!("is of type {}", self.expected_type)
55    }
56}
57
58#[cfg(test)]
59mod tests {
60    use super::*;
61    use serde_json::json;
62
63    #[test]
64    fn test_type_matching() {
65        // Test string type
66        assert!(TypeMatcher::string().matches(&json!("test")));
67        assert!(!TypeMatcher::string().matches(&json!(42)));
68
69        // Test number type
70        assert!(TypeMatcher::number().matches(&json!(42)));
71        assert!(TypeMatcher::number().matches(&json!(42.5)));
72        assert!(!TypeMatcher::number().matches(&json!("42")));
73
74        // Test boolean type
75        assert!(TypeMatcher::boolean().matches(&json!(true)));
76        assert!(!TypeMatcher::boolean().matches(&json!(1)));
77
78        // Test array type
79        assert!(TypeMatcher::array().matches(&json!([1, 2, 3])));
80        assert!(!TypeMatcher::array().matches(&json!({"key": "value"})));
81
82        // Test object type
83        assert!(TypeMatcher::object().matches(&json!({"key": "value"})));
84        assert!(!TypeMatcher::object().matches(&json!([1, 2, 3])));
85
86        // Test null type
87        assert!(TypeMatcher::null().matches(&json!(null)));
88        assert!(!TypeMatcher::null().matches(&json!(42)));
89    }
90
91    #[test]
92    fn test_descriptions() {
93        assert_eq!(TypeMatcher::string().description(), "is of type string");
94        assert_eq!(TypeMatcher::number().description(), "is of type number");
95    }
96}
json_test/matchers/type_matcher.rs

json_test/matchers/
type_matcher.rs
