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test: concat 混合实参钉补 length 观察面

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彭俊皓
2026-09-19 17:11:14 +00:00
parent be927a5df3
commit e4e446e10c
1 changed files with 6 additions and 5 deletions
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crates/oxide_builtins/tests/array_hole_semantics_tests.rs
+6 -5
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@@ -551,15 +551,16 @@ fn test_concat_empty_array_arg_expands_zero_elements() {
} }
// 引擎钉：concat 多实参混合 present/空数组/非数组实参展开序与规范一致， // 引擎钉：concat 多实参混合 present/空数组/非数组实参展开序与规范一致，
// 空数组实参中间穿插不占位；洞实参位保洞。 // 空数组实参中间穿插不占位（length 观察面钉死）；洞实参位保洞。
#[test] #[test]
fn test_concat_mixed_args_order_and_holes() { fn test_concat_mixed_args_order_and_holes() {
let out = eval_str( let out = eval_str(
"(() => { const mixed = [].concat([], 5, []).join(','); \ "(() => { const mixed = [].concat([], 5, []); \
const ordered = [1].concat([2, 3], 0, []).join(','); \ const ordered = [1].concat([2, 3], 0, []); \
const r = [].concat(new Array(1)); \ const r = [].concat(new Array(1)); \
return mixed + '|' + ordered + '|' + r.length + '|' + (0 in r); })()", return mixed.join(',') + '|' + mixed.length + '|' + ordered.join(',') + '|' + \
ordered.length + '|' + r.length + '|' + (0 in r); })()",
) )
.unwrap(); .unwrap();
assert_eq!(out, "5|1,2,3,0|1|false"); assert_eq!(out, "5|1|1,2,3,0|4|1|false");
} }