1 package goja
2
3 import (
4 "testing"
5 )
6
7 func TestWeakSetBasic(t *testing.T) {
8 const SCRIPT = `
9 var s = new WeakSet();
10 var o = {};
11 s.add(o);
12 if (!s.has(o)) {
13 throw new Error("has");
14 }
15 s.delete(o);
16 if (s.has(o)) {
17 throw new Error("still has");
18 }
19 `
20 testScript(SCRIPT, _undefined, t)
21 }
22
23 func TestWeakSetArraySimple(t *testing.T) {
24 const SCRIPT = `
25 var o1 = {}, o2 = {}, o3 = {};
26
27 var s = new WeakSet([o1, o2, o3]);
28 s.has(o1) && s.has(o2) && s.has(o3);
29 `
30 testScript(SCRIPT, valueTrue, t)
31 }
32
33 func TestWeakSetArrayGeneric(t *testing.T) {
34 const SCRIPT = `
35 var o1 = {}, o2 = {}, o3 = {};
36 var a = new Array();
37 var s;
38 var thrown = false;
39 a[1] = o2;
40
41 try {
42 s = new WeakSet(a);
43 } catch (e) {
44 if (e instanceof TypeError) {
45 thrown = true;
46 }
47 }
48 if (!thrown) {
49 throw new Error("Case 1 does not throw");
50 }
51
52 Object.defineProperty(a.__proto__, "0", {value: o1, writable: true, enumerable: true, configurable: true});
53 s = new WeakSet(a);
54 if (!(s.has(o1) && s.has(o2) && !s.has(o3))) {
55 throw new Error("Case 2 failed");
56 }
57
58 Object.defineProperty(a, "2", {value: o3, configurable: true});
59 s = new WeakSet(a);
60 s.has(o1) && s.has(o2) && s.has(o3);
61 `
62 testScript(SCRIPT, valueTrue, t)
63 }
64
65 func TestWeakSetGetAdderGetIteratorOrder(t *testing.T) {
66 const SCRIPT = `
67 let getterCalled = 0;
68
69 class S extends WeakSet {
70 get add() {
71 getterCalled++;
72 return null;
73 }
74 }
75
76 let getIteratorCalled = 0;
77
78 let iterable = {};
79 iterable[Symbol.iterator] = () => {
80 getIteratorCalled++
81 return {
82 next: 1
83 };
84 }
85
86 let thrown = false;
87
88 try {
89 new S(iterable);
90 } catch (e) {
91 if (e instanceof TypeError) {
92 thrown = true;
93 } else {
94 throw e;
95 }
96 }
97
98 thrown && getterCalled === 1 && getIteratorCalled === 0;
99 `
100 testScript(SCRIPT, valueTrue, t)
101 }
102
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