Module component_fuzz

This module generates test cases for the Wasmtime component model function APIs, e.g. wasmtime::component::func::Func and TypedFunc.

Each case includes a list of arbitrary interface types to use as parameters, plus another one to use as a result, and a component which exports a function and imports a function. The exported function forwards its parameters to the imported one and forwards the result back to the caller. This serves to exercise Wasmtime’s lifting and lowering code and verify the values remain intact during both processes.

Structs

Declarations

Represents custom fragments of a WAT file which may be used to create a component for exercising TestCases

TestCase

Represents a test case for calling a component function

VecInRange

Wraps a Box<[T]> and provides an Arbitrary implementation that always generates slices of length less than or equal to the longest tuple for which Wasmtime generates a ComponentType impl

Enums

StringEncoding

Type

Represents a component model interface type

Constants

EXPORT_FUNCTION

The name of the exported guest function which the host should call

IMPORT_FUNCTION

The name of the imported host function which the generated component will call

MAX_TYPE_DEPTH

Wasmtime allows up to 100 type depth so limit this to just under that.

Functions

rust_type

Generate a TokenStream containing the rust type name for a type.