Module proptest::arbitrary

Defines the Arbitrary trait and related free functions and type aliases.

See the Arbitrary trait for more information.

Modules

functor

Provides higher order Arbitrary traits. This is mainly for use by proptest_derive.

Traits

Arbitrary

Arbitrary determines a canonical Strategy for the implementing type.

Functions

any

Generates a Strategy producing Arbitrary values of A. Unlike arbitrary, it should be used for being explicit on what A is. For clarity, this may be a good idea.

any_with

Generates a Strategy producing Arbitrary values of A with the given configuration arguments passed in args. Unlike arbitrary_with, it should be used for being explicit on what A is. For clarity, this may be a good idea.

arbitrary

Generates a Strategy producing Arbitrary values of A. Works better with type inference than any::<A>().

arbitrary_with

Generates a Strategy producing Arbitrary values of A with the given configuration arguments passed in args. Works better with type inference than any_with::<A>(args).

Type Definitions

Mapped

A normal map from a strategy of I to O.

ParamsFor

ParamsFor allows you to mention the type of Parameters for the input type A without directly using associated types or without resorting to existential types. This way, if implementation of Arbitrary changes, your tests should not break.

SMapped

A static map from a strategy of I to O.

StrategyFor

StrategyFor allows you to mention the type of Strategy for the input type A without directly using associated types or without resorting to existential types. This way, if implementation of Arbitrary changes, your tests should not break. This can be especially beneficial when the type of Strategy that you are dealing with is very long in name (the case with generics).