Source code
Revision control
Copy as Markdown
Other Tools
// This test case is used to test the optimized code path where the computation
// of `Object.keys(...).length` no longer compute `Object.keys(...)` as an
// intermediate result.
//
// This test verifies that the result remain consistent after the optimization.
function cmp_keys_length(a, b) {
return Object.keys(a).length == Object.keys(b).length;
}
let objs = [
{x:0, a: 1, b: 2},
{x:1, b: 1, c: 2},
{x:2, c: 1, d: 2},
{x:3, a: 1, b: 2, c: 3},
{x:4, b: 1, c: 2, d: 3},
{x:5, a: 1, b: 2, c: 3, d: 4}
];
function max_of(o) {
return o?.d ?? o?.c ?? o?.b ?? 0;
}
with({}) {}
for (let i = 0; i < 1000; i++) {
for (let o1 of objs) {
for (let o2 of objs) {
assertEq(cmp_keys_length(o1, o2), max_of(o1) == max_of(o2));
}
}
}