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test("basic functionality", () => {
let o = {
var1: "foo",
var2: 42,
arr: [
1,
2,
{
nested: {
hello: "world",
},
get x() {
return 10;
},
},
],
obj: {
subarr: [3],
},
};
let string = JSON.stringify(o, (key, value) => {
if (key === "hello") return undefined;
if (value === 10) return 20;
if (key === "subarr") return [3, 4, 5];
return value;
});
expect(string).toBe(
'{"var1":"foo","var2":42,"arr":[1,2,{"nested":{},"x":20}],"obj":{"subarr":[3,4,5]}}'
);
string = JSON.stringify(o, ["var1", "var1", "var2", "obj"]);
expect(string).toBe('{"var1":"foo","var2":42,"obj":{}}');
string = JSON.stringify(o, ["var1", "var1", "var2", "obj", "subarr"]);
expect(string).toBe('{"var1":"foo","var2":42,"obj":{"subarr":[3]}}');
});
|
