testament/assert-matches

    macro
    /usr/local/lib/janet/testament/lib/testament.janet on line 742, column 1

    (assert-matches structure actual &opt note)

    Asserts that `structure` matches `actual` (with an optional `note`)

    The `assert-matches` macro provides a mechanism for creating an 
    assertion that an expression matches a particular structure (at 
    least in part).

    An optional `note` can be included that will be used in any failure 
    result to identify the assertion. If no `note` is provided, the 
    form `(matches structure actual)` is used.