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package goja
import "testing"
func TestSparseArraySetLengthWithPropItems(t *testing.T) {
const SCRIPT = `
var a = [1,2,3,4];
a[100000] = 5;
var thrown = false;
Object.defineProperty(a, "2", {value: 42, configurable: false, writable: false});
try {
Object.defineProperty(a, "length", {value: 0, writable: false});
} catch (e) {
thrown = e instanceof TypeError;
}
thrown && a.length === 3;
`
testScript1(SCRIPT, valueTrue, t)
}
func TestSparseArraySwitch(t *testing.T) {
const SCRIPT = `
var a = [];
a[20470] = 5; // switch to sparse
for (var i = a.length - 1; i >= 0; i--) {
a[i] = i; // switch to normal at some point
}
if (a.length != 20471) {
throw new Error("Invalid length: " + a.length);
}
for (var i = 0; i < a.length; i++) {
if (a[i] !== i) {
throw new Error("Invalid value at " + i + ": " + a[i]);
}
}
`
testScript1(SCRIPT, _undefined, t)
}
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