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// Test passing of multi-value results.
var suspending_fib2 = new WebAssembly.Suspending(
async (i, j) => { return [j, i + j] }
);
var ins = wasmEvalText(`(module
(import "js" "fib2" (func $tt (param i32 i32) (result i32 i32)))
(func (export "fib1") (param i32 i32) (result i32 i32)
local.get 1
local.get 1
local.get 0
i32.add
call $tt
)
)`, {
js: {
fib2: suspending_fib2,
},
});
var fib = WebAssembly.promising(ins.exports.fib1);
var res = fib(1, 1);
res.then((r) => {
assertEq(r instanceof Array, true);
assertEq(r.join(","), "2,3");
}).catch(e => {
assertEq(true, false);
});
// Test no results returned.
var check = 0;
var ins = wasmEvalText(`(module
(import "js" "out" (func $out (param i32)))
(func (export "in") (param i32)
local.get 0
call $out
)
)`, {
js: {
out: new WebAssembly.Suspending(async(i) => {
check += i;
return 42;
}),
},
});
var res = WebAssembly.promising(ins.exports.in)(1);
res.then((r) => {
assertEq(typeof r, "undefined");
assertEq(check, 1);
}).catch(e => {
assertEq(true, false);
});
// Check non-iterable returned from JS.
var ins = wasmEvalText(`(module
(import "js" "fail" (func $out (result i32 i32)))
(func (export "test") (result i32)
call $out
i32.add
)
)`, {
js: {
fail: new WebAssembly.Suspending(() => 42),
},
});
var res = WebAssembly.promising(ins.exports.test)();
res.then((r) => {
assertEq(true, false);
}).catch(e => {
assertEq(e instanceof TypeError, true)
});
// Check wrong number of values returned from JS.
var ins = wasmEvalText(`(module
(import "js" "fail" (func $out (result i32 i32 i32)))
(func (export "test") (result i32 i32)
call $out
i32.add
)
)`, {
js: {
fail: new WebAssembly.Suspending(() => [42, 1]),
},
});
var res = WebAssembly.promising(ins.exports.test)();
res.then((r) => {
assertEq(true, false);
}).catch(e => {
assertEq(e instanceof TypeError, true)
});