wasmer/lib/api/tests/module.rs

use macro_wasmer_universal_test::universal_test;
#[cfg(feature = "js")]
use wasm_bindgen_test::*;

use wasmer::*;

#[universal_test]
fn module_get_name() -> Result<(), String> {
    let store = Store::default();
    let wat = r#"(module)"#;
    let module = Module::new(&store, wat)
        .map_err(|e| format!("{e:?}"))
        .map_err(|e| format!("{e:?}"))?;
    assert_eq!(module.name(), None);

    Ok(())
}

#[universal_test]
fn module_set_name() -> Result<(), String> {
    let store = Store::default();
    let wat = r#"(module $name)"#;
    let mut module = Module::new(&store, wat).map_err(|e| format!("{e:?}"))?;
    assert_eq!(module.name(), Some("name"));

    module.set_name("new_name");
    assert_eq!(module.name(), Some("new_name"));

    Ok(())
}

#[universal_test]
fn imports() -> Result<(), String> {
    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).map_err(|e| format!("{e:?}"))?;
    assert_eq!(
        module.imports(&store).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))
            )
        ]
    );

    // Now we test the iterators
    assert_eq!(
        module.imports(&store).functions().collect::<Vec<_>>(),
        vec![ImportType::new(
            "host",
            "func",
            FunctionType::new(vec![], vec![])
        ),]
    );
    assert_eq!(
        module.imports(&store).memories().collect::<Vec<_>>(),
        vec![ImportType::new(
            "host",
            "memory",
            MemoryType::new(Pages(1), None, false)
        ),]
    );
    assert_eq!(
        module.imports(&store).tables().collect::<Vec<_>>(),
        vec![ImportType::new(
            "host",
            "table",
            TableType::new(Type::FuncRef, 1, None)
        ),]
    );
    assert_eq!(
        module.imports(&store).globals().collect::<Vec<_>>(),
        vec![ImportType::new(
            "host",
            "global",
            GlobalType::new(Type::I32, Mutability::Const)
        ),]
    );
    Ok(())
}

#[test]
fn exports() -> Result<(), String> {
    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).map_err(|e| format!("{e:?}"))?;
    assert_eq!(
        module.exports(&store).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))
            )
        ]
    );

    // Now we test the iterators
    assert_eq!(
        module.exports(&store).functions().collect::<Vec<_>>(),
        vec![ExportType::new("func", FunctionType::new(vec![], vec![])),]
    );
    assert_eq!(
        module.exports(&store).memories().collect::<Vec<_>>(),
        vec![ExportType::new(
            "memory",
            MemoryType::new(Pages(1), None, false)
        ),]
    );
    assert_eq!(
        module.exports(&store).tables().collect::<Vec<_>>(),
        vec![ExportType::new(
            "table",
            TableType::new(Type::FuncRef, 1, None)
        ),]
    );
    assert_eq!(
        module.exports(&store).globals().collect::<Vec<_>>(),
        vec![ExportType::new(
            "global",
            GlobalType::new(Type::I32, Mutability::Const)
        ),]
    );
    Ok(())
}

#[universal_test]
fn calling_host_functions_with_negative_values_works() -> Result<(), String> {
    let mut 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).map_err(|e| format!("{e:?}"))?;
    let imports = imports! {
        "host" => {
            "host_func1" => Function::new_typed(&mut store, |p: u64| {
                println!("host_func1: Found number {}", p);
                assert_eq!(p, u64::max_value());
            }),
            "host_func2" => Function::new_typed(&mut store, |p: u32| {
                println!("host_func2: Found number {}", p);
                assert_eq!(p, u32::max_value());
            }),
            "host_func3" => Function::new_typed(&mut store, |p: i64| {
                println!("host_func3: Found number {}", p);
                assert_eq!(p, -1);
            }),
            "host_func4" => Function::new_typed(&mut store, |p: i32| {
                println!("host_func4: Found number {}", p);
                assert_eq!(p, -1);
            }),
            "host_func5" => Function::new_typed(&mut store, |p: i16| {
                println!("host_func5: Found number {}", p);
                assert_eq!(p, -1);
            }),
            "host_func6" => Function::new_typed(&mut store, |p: u16| {
                println!("host_func6: Found number {}", p);
                assert_eq!(p, u16::max_value());
            }),
            "host_func7" => Function::new_typed(&mut store, |p: i8| {
                println!("host_func7: Found number {}", p);
                assert_eq!(p, -1);
            }),
            "host_func8" => Function::new_typed(&mut store, |p: u8| {
                println!("host_func8: Found number {}", p);
                assert_eq!(p, u8::max_value());
            }),
        }
    };
    let instance = Instance::new(&mut store, &module, &imports).map_err(|e| format!("{e:?}"))?;

    let f1: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func1")
        .map_err(|e| format!("{e:?}"))?;
    let f2: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func2")
        .map_err(|e| format!("{e:?}"))?;
    let f3: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func3")
        .map_err(|e| format!("{e:?}"))?;
    let f4: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func4")
        .map_err(|e| format!("{e:?}"))?;
    let f5: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func5")
        .map_err(|e| format!("{e:?}"))?;
    let f6: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func6")
        .map_err(|e| format!("{e:?}"))?;
    let f7: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func7")
        .map_err(|e| format!("{e:?}"))?;
    let f8: TypedFunction<(), ()> = instance
        .exports
        .get_typed_function(&mut store, "call_host_func8")
        .map_err(|e| format!("{e:?}"))?;

    f1.call(&mut store).map_err(|e| format!("{e:?}"))?;
    f2.call(&mut store).map_err(|e| format!("{e:?}"))?;
    f3.call(&mut store).map_err(|e| format!("{e:?}"))?;
    f4.call(&mut store).map_err(|e| format!("{e:?}"))?;
    f5.call(&mut store).map_err(|e| format!("{e:?}"))?;
    f6.call(&mut store).map_err(|e| format!("{e:?}"))?;
    f7.call(&mut store).map_err(|e| format!("{e:?}"))?;
    f8.call(&mut store).map_err(|e| format!("{e:?}"))?;

    Ok(())
}

#[universal_test]
fn module_custom_sections() -> Result<(), String> {
    let store = Store::default();
    let custom_section_wasm_bytes = include_bytes!("simple-name-section.wasm");
    let module = Module::new(&store, custom_section_wasm_bytes).map_err(|e| format!("{e:?}"))?;
    let sections = module.custom_sections(&store, "name");
    let sections_vec: Vec<Box<[u8]>> = sections.collect();
    assert_eq!(sections_vec.len(), 1);
    assert_eq!(
        sections_vec[0],
        vec![2, 2, 36, 105, 1, 0, 0, 0].into_boxed_slice()
    );
    Ok(())
}