Macro pat 

macro_rules! pat {
    (@wrap_matcher $lit:literal) => { ... };
    (@wrap_matcher $expr:expr) => { ... };
    ({ $($key:literal : $val:expr),* $(,)? }) => { ... };
    ({ $($key:literal : $val:expr),* , .. }) => { ... };
}

Matches a JSON object against a pattern of key-value matchers.

Fields listed in the pattern must match; a trailing .. allows extra fields.

Examples

let value = j!({
    "name": "Alice",
    "age": 30,
    "active": true,
    "role": j!("admin")
});
assert_that!(
    value,
    json::pat!({
        "name": starts_with("Al"),
        "age": ge(29),
        "active": true,
        "role": j!("admin"),
        .. // allows additional fields
    })
);

Errors

Fails when the value is not a JSON object, when a required field is missing, when a field value mismatches, or when extra fields appear without ...

This macro is reexported as json::pat!.

Supported Inputs

• Literal JSON-compatible values
• Direct serde_json::Value
• Native googletest matchers