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use anyhow::Result;
use wasmtime::*;
#[test]
fn get_none() {
let mut store = Store::<()>::default();
let ty = TableType::new(ValType::FuncRef, 1, None);
let table = Table::new(&mut store, ty, Val::FuncRef(None)).unwrap();
match table.get(&mut store, 0) {
Some(Val::FuncRef(None)) => {}
_ => panic!(),
}
assert!(table.get(&mut store, 1).is_none());
}
#[test]
fn fill_wrong() {
let mut store = Store::<()>::default();
let ty = TableType::new(ValType::FuncRef, 1, None);
let table = Table::new(&mut store, ty, Val::FuncRef(None)).unwrap();
assert_eq!(
table
.fill(&mut store, 0, Val::ExternRef(None), 1)
.map_err(|e| e.to_string())
.unwrap_err(),
"value does not match table element type"
);
let ty = TableType::new(ValType::ExternRef, 1, None);
let table = Table::new(&mut store, ty, Val::ExternRef(None)).unwrap();
assert_eq!(
table
.fill(&mut store, 0, Val::FuncRef(None), 1)
.map_err(|e| e.to_string())
.unwrap_err(),
"value does not match table element type"
);
}
#[test]
fn copy_wrong() {
let mut store = Store::<()>::default();
let ty = TableType::new(ValType::FuncRef, 1, None);
let table1 = Table::new(&mut store, ty, Val::FuncRef(None)).unwrap();
let ty = TableType::new(ValType::ExternRef, 1, None);
let table2 = Table::new(&mut store, ty, Val::ExternRef(None)).unwrap();
assert_eq!(
Table::copy(&mut store, &table1, 0, &table2, 0, 1)
.map_err(|e| e.to_string())
.unwrap_err(),
"tables do not have the same element type"
);
}
#[test]
fn null_elem_segment_works_with_imported_table() -> Result<()> {
let mut store = Store::<()>::default();
let ty = TableType::new(ValType::FuncRef, 1, None);
let table = Table::new(&mut store, ty, Val::FuncRef(None))?;
let module = Module::new(
store.engine(),
r#"
(module
(import "" "" (table (;0;) 1 funcref))
(func
i32.const 0
table.get 0
drop
)
(start 0)
(elem (;0;) (i32.const 0) funcref (ref.null func))
)
"#,
)?;
Instance::new(&mut store, &module, &[table.into()])?;
Ok(())
}