Module proptest::strategy

Modified versions of the normal strategy combinators which take specialised traits instead of normal functions.

A boxed Strategy trait object as produced by Strategy::boxed().

Options passed to check_strategy_sanity().

Strategy and ValueTree filter adaptor.

Strategy and ValueTree filter_map adaptor.

ValueTree corresponding to FilterMap.

Adaptor that flattens a Strategy which produces other Strategys into a Strategy that picks one of those strategies and then picks values from it.

The ValueTree produced by Flatten.

Adaptor for Strategy and ValueTree which guards simplify() and complicate() to avoid contract violations.

Similar to Flatten, but does not shrink the input strategy.

Similar to Map plus Flatten, but does not shrink the input strategy and passes the original input through.

A Strategy which always produces a single value value and never simplifies.

A Strategy which always produces a single value value and never simplifies. If T is Clone, you should use Just instead.

Strategy and ValueTree map adaptor.

Strategy and ValueTree map into adaptor.

Wraps a Strategy or ValueTree to suppress shrinking of generated values.

Strategy perturbation adaptor.

ValueTree perturbation adaptor.

Return type from Strategy::prop_recursive().

A boxed Strategy trait object which is also Sync and Send, as produced by Strategy::sboxed().

Strategy shuffle adaptor.

ValueTree shuffling adaptor.

Similar to Union, but internally uses a tuple to hold the strategies.

ValueTree type produced by TupleUnion.

A Strategy which picks from one of several delegate Stragegys.

ValueTree corresponding to Union.

A value which can be used with the prop_shuffle combinator.

A strategy for producing arbitrary values of a given type.

A generated value and its associated shrinker.

Run some tests on the given Strategy to ensure that it upholds the simplify/complicate contracts.

Convert a floating-point weight in the range (0.0,1.0) to a pair of weights that can be used with Union and similar.

Shorthand for LazyJust<T, fn () -> T>.

A new ValueTree from a Strategy when Ok or otherwise Err when a new value-tree can not be produced for some reason such as in the case of filtering with a predicate which always returns false. You should pass in your strategy as the type parameter.

The value that functions under test use for a particular Strategy.

A relative weight of a particular Strategy corresponding to T coupled with T itself. The weight is currently given in u32.