macro_rules! assert_emscripten_output { ($file:expr, $name:expr, $args:expr, $expected:expr) => {{ use wasmer_clif_backend::CraneliftCompiler; use wasmer_emscripten::{ EmscriptenGlobals, generate_emscripten_env, stdio::StdioCapturer }; let wasm_bytes = include_bytes!($file); let module = wasmer_runtime_core::compile_with(&wasm_bytes[..], &CraneliftCompiler::new()) .expect("WASM can't be compiled"); // let module = compile(&wasm_bytes[..]) // .map_err(|err| format!("Can't create the WebAssembly module: {}", err)).unwrap(); // NOTE: Need to figure what the unwrap is for ?? let mut emscripten_globals = EmscriptenGlobals::new(&module); let import_object = generate_emscripten_env(&mut emscripten_globals); let mut instance = module.instantiate(&import_object) .map_err(|err| format!("Can't instantiate the WebAssembly module: {:?}", err)).unwrap(); // NOTE: Need to figure what the unwrap is for ?? let capturer = StdioCapturer::new(); wasmer_emscripten::run_emscripten_instance( &module, &mut instance, $name, $args, ).expect("run_emscripten_instance finishes"); let output = capturer.end().unwrap().0; let expected_output = include_str!($expected); assert!( output.contains(expected_output), "Output: `{}` does not contain expected output: `{}`", output, expected_output ); }}; } pub fn assert_emscripten_output(wasm_bytes: &[u8], raw_expected_str: &str) { use wasmer_clif_backend::CraneliftCompiler; use wasmer_emscripten::{generate_emscripten_env, stdio::StdioCapturer, EmscriptenGlobals}; let module = wasmer_runtime_core::compile_with(&wasm_bytes[..], &CraneliftCompiler::new()) .expect("WASM can't be compiled"); let mut emscripten_globals = EmscriptenGlobals::new(&module); let import_object = generate_emscripten_env(&mut emscripten_globals); let mut instance = module .instantiate(&import_object) .map_err(|err| format!("Can't instantiate the WebAssembly module: {:?}", err)) .unwrap(); let capturer = StdioCapturer::new(); wasmer_emscripten::run_emscripten_instance(&module, &mut instance, "test", vec![]) .expect("run_emscripten_instance finishes"); let raw_output_string = capturer.end().unwrap().0; // trim the strings to avoid cross-platform line ending and white space issues let output = raw_output_string.trim(); let expected_output = raw_expected_str.trim(); let contains_output = output.contains(expected_output); assert!( contains_output, "Output: `{}` does not contain expected output: `{}`", output, expected_output ); }