1 use wasmtime::*; 2 3 #[test] 4 fn wrong_import_numbers() -> Result<()> { 5 let mut store = Store::<()>::default(); 6 let module = Module::new(store.engine(), r#"(module (import "" "" (func)))"#)?; 7 8 assert!(Instance::new(&mut store, &module, &[]).is_err()); 9 let func = Func::wrap(&mut store, || {}); 10 assert!(Instance::new(&mut store, &module, &[func.clone().into(), func.into()]).is_err()); 11 Ok(()) 12 } 13 14 #[test] 15 #[cfg_attr(miri, ignore)] 16 fn initializes_linear_memory() -> Result<()> { 17 // Test for https://github.com/bytecodealliance/wasmtime/issues/2784 18 let wat = r#" 19 (module 20 (memory (export "memory") 2) 21 (data (i32.const 0) "Hello World!") 22 )"#; 23 let module = Module::new(&Engine::default(), wat)?; 24 25 let mut store = Store::new(module.engine(), ()); 26 let instance = Instance::new(&mut store, &module, &[])?; 27 let memory = instance.get_memory(&mut store, "memory").unwrap(); 28 29 let mut bytes = [0; 12]; 30 memory.read(&store, 0, &mut bytes)?; 31 assert_eq!(bytes, "Hello World!".as_bytes()); 32 Ok(()) 33 } 34 35 #[test] 36 #[cfg_attr(miri, ignore)] 37 fn linear_memory_limits() -> Result<()> { 38 // this test will allocate 4GB of virtual memory space, and may not work in 39 // situations like CI QEMU emulation where it triggers SIGKILL. 40 if std::env::var("WASMTIME_TEST_NO_HOG_MEMORY").is_ok() { 41 return Ok(()); 42 } 43 test(&Engine::default())?; 44 let mut pool = crate::small_pool_config(); 45 pool.memory_pages(65536); 46 test(&Engine::new(Config::new().allocation_strategy( 47 InstanceAllocationStrategy::Pooling(pool), 48 ))?)?; 49 return Ok(()); 50 51 fn test(engine: &Engine) -> Result<()> { 52 let wat = r#" 53 (module 54 (memory 65534) 55 56 (func (export "grow") (result i32) 57 i32.const 1 58 memory.grow) 59 (func (export "size") (result i32) 60 memory.size) 61 ) 62 "#; 63 let module = Module::new(engine, wat)?; 64 65 let mut store = Store::new(engine, ()); 66 let instance = Instance::new(&mut store, &module, &[])?; 67 let size = instance.get_typed_func::<(), i32>(&mut store, "size")?; 68 let grow = instance.get_typed_func::<(), i32>(&mut store, "grow")?; 69 70 assert_eq!(size.call(&mut store, ())?, 65534); 71 assert_eq!(grow.call(&mut store, ())?, 65534); 72 assert_eq!(size.call(&mut store, ())?, 65535); 73 assert_eq!(grow.call(&mut store, ())?, 65535); 74 assert_eq!(size.call(&mut store, ())?, 65536); 75 assert_eq!(grow.call(&mut store, ())?, -1); 76 assert_eq!(size.call(&mut store, ())?, 65536); 77 Ok(()) 78 } 79 } 80