metamon/transform/dict
Standard Transform(Dict(k, v)) constructors used in metamorphic
relations. The classic use case is asserting that a function is
invariant under key reordering: f(shuffle_keys(d)) == f(d).
Values
pub fn insert(
key: k,
value: v,
) -> transform.Transform(dict.Dict(k, v))Insert / overwrite the binding key -> value.
pub fn remove(key: k) -> transform.Transform(dict.Dict(k, v))Delete key from the dict if present.
pub fn shuffle_keys(
seed_value: Int,
) -> transform.Transform(dict.Dict(k, v))Re-insert all entries in a deterministically shuffled order. The
resulting dict is ==-equal to the input (since Dict ignores
insertion order), but any consumer that observes traversal order
will see a different sequence — exactly the property metamorphic
tests want to catch.