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// IM has the following fastpaths:
// - constant index (constant)
// - need negative int check (neg)
// - needs hole check (hole)
// So to test everything we have to do:
// constant | neg | hole
// test 1: 0 0 0
// test 2: 1 0 0
// test 3: 0 1 0
// test 4: 1 1 0
// test 5: 0 0 1
// test 6: 1 0 1
// test 7: 0 1 1
// test 8: 1 1 1
function test1(index, a) {
if (index < 0)
index = -index
return index in a;
}
assertEq(test1(1, [1,2]), true);
function test2(a) {
return 0 in a;
}
assertEq(test2([1,2]), true);
function test3(index, a) {
return index in a;
}
var arr3 = [];
arr3["-1073741828"] = 17;
assertEq(test3(-1073741828, arr3), true);
function test4(a) {
return -1073741828 in a;
}
assertEq(test4(arr3), true);
function test5(index, a) {
if (index < 0)
index = -index
return index in a;
}
var arr5 = [];
arr5[0] = 1
arr5[1] = 1
arr5[2] = 1
arr5[4] = 1
assertEq(test5(1, arr5), true);
assertEq(test5(3, arr5), false);
function test7a(a) {
return 3 in a;
}
function test7b(a) {
return 4 in a;
}
assertEq(test7a(arr5), false);
assertEq(test7b(arr5), true);
function test8(index, a) {
return index in a;
}
arr5["-1073741828"] = 17;
assertEq(test8(-1073741828, arr5), true);
assertEq(test8(3, arr5), false);
assertEq(test8(0, arr5), true);
function test9a(a) {
return 0 in a;
}
function test9b(a) {
return 3 in a;
}
function test9c(a) {
return -1073741828 in a;
}
assertEq(test9a(arr5), true);
assertEq(test9b(arr5), false);
assertEq(test9c(arr5), true);