Struct IsoTestApi

pub struct IsoTestApi<A: Iso>(/* private fields */);

The API passed into an isotest in the Test context.

The isotest! macro is a bit sneaky, passing in APIs with different function signatures for each context, so that the test can be written the same lexically, but actually expand to two different tests working with two different types.

Implementations

impl<A: Iso> IsoTestApi<A>

pub fn new() -> Self

Constructor

pub fn create(&self, a: A) -> A

Create test data from test data (identity function)

pub fn update(&self, a: A, f: impl Fn(A) -> A) -> A

Update test data with a function over test data (simple map)

pub fn mutate(&self, a: &mut A, f: impl Fn(&mut A))

Mutate test data with a function over test data (simple mutable map)

pub fn context(&self) -> IsotestContext

Return the context we’re in