use anyhow::Result;
use wasmer::*;
#[test]
fn module_get_name() -> Result<()> {
let store = Store::default();
let wat = r#"(module)"#;
let module = Module::new(&store, wat)?;
assert_eq!(module.name(), None);
Ok(())
}
#[test]
fn module_set_name() -> Result<()> {
let store = Store::default();
let wat = r#"(module $name)"#;
let mut module = Module::new(&store, wat)?;
assert_eq!(module.name(), Some("name"));
module.set_name("new_name");
assert_eq!(module.name(), Some("new_name"));
Ok(())
}
#[test]
fn imports() -> Result<()> {
let store = Store::default();
let wat = r#"(module
(import "host" "func" (func))
(import "host" "memory" (memory 1))
(import "host" "table" (table 1 anyfunc))
(import "host" "global" (global i32))
)"#;
let module = Module::new(&store, wat)?;
assert_eq!(
module.imports().collect::<Vec<_>>(),
vec![
ImportType::new(
"host",
"func",
ExternType::Function(FunctionType::new(vec![], vec![]))
),
ImportType::new(
"host",
"memory",
ExternType::Memory(MemoryType::new(Pages(1), None, false))
),
ImportType::new(
"host",
"table",
ExternType::Table(TableType::new(Type::FuncRef, 1, None))
),
ImportType::new(
"host",
"global",
ExternType::Global(GlobalType::new(Type::I32, Mutability::Const))
)
]
);
assert_eq!(
module.imports().functions().collect::<Vec<_>>(),
vec![ImportType::new(
"host",
"func",
FunctionType::new(vec![], vec![])
),]
);
assert_eq!(
module.imports().memories().collect::<Vec<_>>(),
vec![ImportType::new(
"host",
"memory",
MemoryType::new(Pages(1), None, false)
),]
);
assert_eq!(
module.imports().tables().collect::<Vec<_>>(),
vec![ImportType::new(
"host",
"table",
TableType::new(Type::FuncRef, 1, None)
),]
);
assert_eq!(
module.imports().globals().collect::<Vec<_>>(),
vec![ImportType::new(
"host",
"global",
GlobalType::new(Type::I32, Mutability::Const)
),]
);
Ok(())
}
#[test]
fn exports() -> Result<()> {
let store = Store::default();
let wat = r#"(module
(func (export "func") nop)
(memory (export "memory") 1)
(table (export "table") 1 funcref)
(global (export "global") i32 (i32.const 0))
)"#;
let module = Module::new(&store, wat)?;
assert_eq!(
module.exports().collect::<Vec<_>>(),
vec![
ExportType::new(
"func",
ExternType::Function(FunctionType::new(vec![], vec![]))
),
ExportType::new(
"memory",
ExternType::Memory(MemoryType::new(Pages(1), None, false))
),
ExportType::new(
"table",
ExternType::Table(TableType::new(Type::FuncRef, 1, None))
),
ExportType::new(
"global",
ExternType::Global(GlobalType::new(Type::I32, Mutability::Const))
)
]
);
assert_eq!(
module.exports().functions().collect::<Vec<_>>(),
vec![ExportType::new("func", FunctionType::new(vec![], vec![])),]
);
assert_eq!(
module.exports().memories().collect::<Vec<_>>(),
vec![ExportType::new(
"memory",
MemoryType::new(Pages(1), None, false)
),]
);
assert_eq!(
module.exports().tables().collect::<Vec<_>>(),
vec![ExportType::new(
"table",
TableType::new(Type::FuncRef, 1, None)
),]
);
assert_eq!(
module.exports().globals().collect::<Vec<_>>(),
vec![ExportType::new(
"global",
GlobalType::new(Type::I32, Mutability::Const)
),]
);
Ok(())
}
#[test]
fn calling_host_functions_with_negative_values_works() -> Result<()> {
let store = Store::default();
let wat = r#"(module
(import "host" "host_func1" (func (param i64)))
(import "host" "host_func2" (func (param i32)))
(import "host" "host_func3" (func (param i64)))
(import "host" "host_func4" (func (param i32)))
(import "host" "host_func5" (func (param i32)))
(import "host" "host_func6" (func (param i32)))
(import "host" "host_func7" (func (param i32)))
(import "host" "host_func8" (func (param i32)))
(func (export "call_host_func1")
(call 0 (i64.const -1)))
(func (export "call_host_func2")
(call 1 (i32.const -1)))
(func (export "call_host_func3")
(call 2 (i64.const -1)))
(func (export "call_host_func4")
(call 3 (i32.const -1)))
(func (export "call_host_func5")
(call 4 (i32.const -1)))
(func (export "call_host_func6")
(call 5 (i32.const -1)))
(func (export "call_host_func7")
(call 6 (i32.const -1)))
(func (export "call_host_func8")
(call 7 (i32.const -1)))
)"#;
let module = Module::new(&store, wat)?;
let imports = imports! {
"host" => {
"host_func1" => Function::new_native(&store, |p: u64| {
println!("host_func1: Found number {}", p);
assert_eq!(p, u64::max_value());
}),
"host_func2" => Function::new_native(&store, |p: u32| {
println!("host_func2: Found number {}", p);
assert_eq!(p, u32::max_value());
}),
"host_func3" => Function::new_native(&store, |p: i64| {
println!("host_func3: Found number {}", p);
assert_eq!(p, -1);
}),
"host_func4" => Function::new_native(&store, |p: i32| {
println!("host_func4: Found number {}", p);
assert_eq!(p, -1);
}),
"host_func5" => Function::new_native(&store, |p: i16| {
println!("host_func5: Found number {}", p);
assert_eq!(p, -1);
}),
"host_func6" => Function::new_native(&store, |p: u16| {
println!("host_func6: Found number {}", p);
assert_eq!(p, u16::max_value());
}),
"host_func7" => Function::new_native(&store, |p: i8| {
println!("host_func7: Found number {}", p);
assert_eq!(p, -1);
}),
"host_func8" => Function::new_native(&store, |p: u8| {
println!("host_func8: Found number {}", p);
assert_eq!(p, u8::max_value());
}),
}
};
let instance = Instance::new(&module, &imports)?;
let f1: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func1")?;
let f2: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func2")?;
let f3: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func3")?;
let f4: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func4")?;
let f5: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func5")?;
let f6: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func6")?;
let f7: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func7")?;
let f8: NativeFunc<(), ()> = instance.exports.get_native_function("call_host_func8")?;
f1.call()?;
f2.call()?;
f3.call()?;
f4.call()?;
f5.call()?;
f6.call()?;
f7.call()?;
f8.call()?;
Ok(())
}