wasm-link 0.4.1

A WebAssembly plugin runtime based around Wasmtime intended for building fully modular applications
Documentation 
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use std::collections::HashMap;
use wasm_link::{ Binding, Engine, Linker, Val };
use wasm_link::cardinality::ExactlyOne ;

fixtures! {
	bindings = { root: "root", dependency: "dependency" };
	plugins  = { startup: "startup", child: "child" };
}

#[test]
fn dispatch_test_dependant_plugins_expect_primitive() {

	let engine = Engine::default();
	let linker = Linker::new( &engine );
	let plugins = fixtures::plugins( &engine );
	let bindings = fixtures::bindings();

	let child_instance = plugins.child.plugin
		.instantiate( &engine, &linker )
		.expect( "Failed to instantiate child plugin" );
	let dependency_binding = Binding::new(
		bindings.dependency.package,
		HashMap::from([( bindings.dependency.name, bindings.dependency.spec )]),
		ExactlyOne( "_".to_string(), child_instance ),
	);

	let startup_instance = plugins.startup.plugin
		.link( &engine, linker.clone(), vec![ dependency_binding ])
		.expect( "Failed to link startup plugin" );
	let root_binding = Binding::new(
		bindings.root.package,
		HashMap::from([( bindings.root.name, bindings.root.spec )]),
		ExactlyOne( "_".to_string(), startup_instance ),
	);

	match root_binding.dispatch( "root", "get-primitive", &[] ) {
		Ok( ExactlyOne( _, Ok( Val::U32( 42 )))) => {}
		value => panic!( "Expected Ok( ExactlyOne( Ok( U32( 42 )))), found: {:#?}", value ),
	}

}

#[test]
fn dispatch_async_test_dependant_plugins_expect_primitive() {

	futures::executor::block_on( async {
		let engine = Engine::default();
		let linker = Linker::new( &engine );
		let executor = futures::executor::ThreadPool::new()
			.expect( "Failed to create async executor" );
		let plugins = fixtures::plugins( &engine );
		let bindings = fixtures::bindings();

		let child_instance = plugins.child.plugin
			.instantiate_async( &engine, &linker, executor.clone() )
			.await
			.expect( "Failed to instantiate child plugin asynchronously" );
		let dependency_binding = Binding::new(
			bindings.dependency.package,
			HashMap::from([( bindings.dependency.name, bindings.dependency.spec )]),
			ExactlyOne( "_".to_string(), child_instance ),
		);

		let startup_instance = plugins.startup.plugin
			.link_async( &engine, linker.clone(), vec![ dependency_binding ], executor )
			.await
			.expect( "Failed to link startup plugin asynchronously" );
		let root_binding = Binding::new(
			bindings.root.package,
			HashMap::from([( bindings.root.name, bindings.root.spec )]),
			ExactlyOne( "_".to_string(), startup_instance ),
		);

		match root_binding.dispatch_async( "root", "get-primitive", &[] ).await {
			Ok( ExactlyOne( _, Ok( Val::U32( 42 )))) => {}
			value => panic!( "Expected Ok( ExactlyOne( Ok( U32( 42 )))), found: {:#?}", value ),
		}
	});

}